Class rules question

so why would it matter if it is a tall deck or a short deck block ? if the max cu " is 588 why is there a 50 weight penalty for the tall deck ???

bbf are 10.3" which is a short deck ...........

Its to help keep cost down for the short deck bbc users persuade them to not splurge etc

I was told it was so they didn't have to pump as many engines.

whatbumper wrote:I was told it was so they didn't have to pump as many engines.

X2

bruno wrote:so why would it matter if it is a tall deck or a short deck block ? if the max cu " is 588 why is there a 50 weight penalty for the tall deck ???

bbf are 10.3" which is a short deck ...........

A lot of associations do this because a Chevrolet/GMC tall deck block was only available OEM in trucks. It is not an automotive block.
What would happen if someone showed-up with a competition 534 Ford truck engine with their 5" bore spacing...?

rmcomprandy wrote:

bruno wrote:so why would it matter if it is a tall deck or a short deck block ? if the max cu " is 588 why is there a 50 weight penalty for the tall deck ???

bbf are 10.3" which is a short deck ...........

A lot of associations do this because a Chevrolet/GMC tall deck block was only available OEM in trucks. It is not an automotive block.
What would happen if someone showed-up with a competition 534 Ford truck engine with their 5" bore spacing...?

I use to have a 10 wheel Dump truck back in the day with a 534, They are some Bad M-fers
And drove it to Fl. from Va. and back and got 10 mpg

Quote from: 79blackbetty on Today at 03:21:52 PM
Can u post the complete rules up HERE please.

Copied this off the tex275 website:

After reviewing our rules, we felt it was in the best interest for the organization to make some adjustments.  These adjustments are being made to allow racers to only have to make small changes in order to go race with other organizations in addition to ours while maintaining the integrity of the class.  We will continue to grow and may need to make more adjustments if it is in the best interest of the organization but for now, we feel this move is a positive move for TeX275. 

         TE

Texas 275 Rules
TeX275.com

*Chassis*
1.  Stock front frame rails (must be in stock location)
2.  Aftermarket control arms and bushings allowed as long as they bolt in stock locations
3.  Rack and Pinion steering allowed
4.  Aftermarket strut is allowed but must follow the following guidelines:
   Full on race strut prohibited (ie. Lamb or equivalent type)
   Bolt in stock location with the exception of aftermarket K-Member
   Strut must be comparable to QA1 or Strange style (adjustable)
Struts that change caster and camber are prohibited
5.  Aftermarket coilover shocks allowed
6.  ALL replacement parts must be in stock location
7.  K-Members allowed (late model Mustangs, Camaros, and Firebirds
8.  K-Members must feature stock attachment locations
9.  No part of the K-Member may be permanently attached to the chassis
10.  Smith Racecraft bolt on front end allowed
11.  Rear frame rails must be in original stock location (minor notching allowed for tire      clearance)
12.  Mini tubs allowed
13.  Any type of rear suspension allowed, 4-links, ladder bars, etc.
14.  Motor plate and Mid plate allowed
15.  Motor must be in stock location
16.  No traction compound spraying devices allowed
17.  Traction control devices prohibited (ex. Davis Box)
18.  No wheelie bars
***19.  Deduct 50# for 1978 and earlier vehicles

*Body*
1.  Firewall must be in stock location, minor modifications for trans, etc is OK
2.  Unaltered floor pan.  Floor pan may be altered for through the floor sub-frame connectors, etc.  Must have stock floor pans from tubs forward.  No back half chassis cars allowed
3.  No body alterations (must have front and rear bumpers)
4.  Headlights and taillights must be in working condition
5.  Fiberglass limited to hood, bumpers, deck lid, front fenders or doors.  You are limited to doors or fenders, but not both. No one-piece fiberglass front ends allowed
6.  Forward facing hood scoops not allowed
7.  Drilling/cutting holes in hood for air inlet prohibited
8.  No Pro Mod style wings
9.  Max Wing 15" from leading edge
10.  Lexan allowed

11.  Nothing may be protruding from or hanging down from underneath the vehicle in an attempt to trip the beams OR give the impression it is being used for that purpose
a.   Only mass produced or OEM equipment allowed.  No one off pieces.
b.   All spoilers/nose pieces must be at least 4 inches off the ground. 

*Interior*
1.  Two front seats (turbo/supercharger cars may remove passenger seat for plumbing)
2.  Driver’s seat must be mounted in front of door jamb
3.  Carpeted interior
4.  Door panels (aluminum door panels allowed)
5.  Stock Dash (aftermarket gauges allowed)


*Tires*
1.  Any 275/60 designated drag radial is allowed
2.  No slicks of any type allowed
 
*Power Adders*
1.  Only one type power adder allowed
2.  Timers and controllers are allowed
3.  Progressive nitrous controllers and boost controllers allowed
NITROUS:
1.  Dual entry and single entry plates are allowed (one nitrous solenoid and one fuel solenoid in a single stage configuration)
2.  Only one fogger or single plate allowed.  If a second nitrous system is on car it must be      capped off at the solenoids.  Dual stage, single nozzle foggers are not allowed
3.  Only one nitrous bottle allowed in car.  15 lb. maximum size. (Push systems       prohibited)
4.  Maximum nitrous supply line is a single #6 line
***5.  Big Blocks and Small Blocks will be limited to a .044 jet maximum on each cylinder on a fogger
***6.  Dual entry plates are limited to two .083 nitrous jets along with a single nitrous solenoid
***7.  Single entry plates are limited to a .120 nitrous jet and a single nitrous solenoid
***8.  All Raised Runner heads (floor of port may not be more than .550 from deck) will be limited to a .038 jet maximum.  This includes the Ford A-460 Head
9.  All EFI systems limited to same rules as fogger application
10.  EFI jet limitation is based on head application (ex. Raised Runner or Non-Raised Runner)
11.  EFI Applications are limited to using only one entry point on each fogger nozzle
12.  Nitrous solenoids limited to a .175 orifice
Previous #11 and #14 have been eliminated

FORCED INDUCTION:
1.  Max 88 mm turbo inlet. Air to liquid intercooler allowed. Measurement will be a 1/16th of an inch away from the compressor wheel.  If it measures more than 88 mm or if the leading edge is more than a 1/16th away from the compressor wheel, then the turbo is illegal.  NOTE:  All turbo cars will be checked
2.   Maximum supercharger F1r.  F1x prohibited
3.  No big blocks allowed with a turbo or procharger/blower

 
*Transmissions*
1.  Automatic or factory equipped manual
2.  No Brunos, Lencos, etc.

*Engines*
1.  No sheet metal intakes
2.  Must use mass produced cast aluminum intakes (no tunnel rams)
3.  Single carburetors only
4.  6-71 max blower allowed
5.  All cars must run gasoline (no alcohol or methanol)
6.  Dry sumps not allowed
7.  All big block engines limited to 10.2" deck height. BBC 427 tall deck "truck" block allowed

*Heads*
1.  Billet or custom fabricated heads prohibited
2.  Internal port areas of cylinder heads may be welded or epoxied for repairing, but heads must maintain standard "as produced" valve/port layout design, valve cant, and valve spacing. (No substituting canted valve for inline head, etc.)
3.  Valve angle cannot exceed plus or minus 1 to 1.25 degrees maximum from stock valve angle.  Valve cant must not exceed 5 to 5.25 degrees
4.  15 degrees minimum non-stock valve angle for small blocks, with the exception of LS heads which are limited to 13 degrees
5.  Yates SC-1’s, Yates C-Series or equivalent, Chevy SB2, and Chevy 15 degrees are prohibited with forced induction applications
6.  No Big Chief, Big Chief style, or Little Chief heads allowed
7.  Big Block cylinder heads must retain 24 degree style port/valve configurations.  No BBC 18 degree or BBF “C” heads allowed
8.  Heads must have manufacturer’s markings visible
9.  If you are not sure if a particular head is allowed, contact Tex275 for clarification
 
*Exhaust*
1.  Mufflers required
2.  No insert or collector mufflers

*Weight Breaks*
**Small block**
***1.  Base weight - 2900#
2.  SB over 440ci add 50#
3.  SB over 470ci add 100#
***4.  *LSX powered cars – 3100# (Nitrous)
***5.  *Turbocharged / Procharged  Small Blocks 3150# (88mm) example- reduced 88/98’s and 91’s without surge holes
***6.  True 88 mm turbo, non-reduced in a true 88 mm housing 3100# GT47 or equivalent
***7.  85 mm turbo with surge holes 3100#/85 mm mid-frame without surge holes 3000#
8.  X275 88 mm turbo 3400# (no additional weight for billet wheel).  This only applies to this particular turbo
9.  Add 50# for billet wheel
***10.  Nitrous, 20 degree valve angle Ford, 23 degree Chevy, and 18 degree Mopar - deduct 150#
***11.  *Yates C, Yates SC1, Chevy SB2 - add 150#
***12.  Nitrous, 18 degree valve Chevy, Ford Glidden or equivalent deduct 100#
***13.  15 degree Chevy NOS combination - add 50 #
***14.  F1r Supercharger 3200#
**Big Block**
1.  Base weight - 3200#
***2.  582 ci-600 ci - add 100#
***3.  10 head bolt Ford blocks 571ci – 600ci - add 50#
***4.  571 ci-600 ci – add 100# (applies to 18 head bolt Ford blocks)
***5.  605ci – 632 ci – add 200#
6.  632ci  maximum
7.  Big Blocks smaller than 500 ci deduct 100#
8.  10.2 deck height maximum
 

**TECH**
1.  All engines are subject to valve angle, port location, and displacement verification at any    time
2.  Nitrous limits and turbo size will be verified before each event and at random during the event as deemed necessary by tech officials
3.  Weights may be adjusted at any time to ensure parity
4.  After winning 3 races in one season 100# will be added for the remainder of the season
5.  All vehicles participating in the race must display the large TeX275 sticker on front or rear windshield.  If the sticker is not displayed, you could be subject to disqualification
6.  All drivers AND owners must be members of TeX275
***THE RULES MAY BE ADJUSTED AS NECESSARY IN AN EFFORT TO MAINTAIN PARITY***
*All changes have *** in front of the number.

bruno wrote:so why would it matter if it is a tall deck or a short deck block ? if the max cu " is 588 why is there a 50 weight penalty for the tall deck ???

bbf are 10.3" which is a short deck ...........

Because most rules makers are morons. Even the 'short deck' 9.800" GM stuff is in the 580"+ range.

How far is up?/how tall is tall?/how short is short? is about all the same kinda deal

It's Chevy lingo.....short, tall, 250 long. 400 long and all that jive.

1. Base weight - 3200#
***2. 582 ci-600 ci - add 100#
***3. 10 head bolt Ford blocks 571ci – 600ci - add 50#
***4. 571 ci-600 ci – add 100# (applies to 18 head bolt Ford blocks)
***5. 605ci – 632 ci – add 200#
6. 632ci maximum
7. Big Blocks smaller than 500 ci deduct 100#
8. 10.2 deck height maximum
--------------------------------------------------------------------------------------------------------------------------

10.200" Max...........all 429-460 engines are illegal.

These are the rules im going by ........

FORMAT: This is an 1/8 mile heads-up class run on a .400 pro tree with a pro ladder. X275 is a qualified quick 8 field. Courtesy staging and autostart is in effect. There will also be another class called “The Shootout” for qualifiers #9-16, and it will be run on a pro ladder. This allows non-qualifiers to compete for additional points and a place to race.


Body: The car must retain its original appearance, profiles, and dimensions. Factory roof and quarter panels must be used. Aftermarket fiberglass replacement panels are limited to hood, front fenders, doors, decklids, and bumpers only. All hoods must be removable with quarter turn fasteners. All front ends must be of factory dimensions and cannot be stretched. Aftermarket wings and spoilers are permitted. Complete stock appearing front and rear bumpers are required. A hood must cover the entire induction system. Forward facing hood scoops are permitted.


Interior: Factory appearing dashboard, door panels, and driver seat is required. Full Carpet is required on floorboards. Bare inside frame of car cannot be exposed. Aftermarket steering column is permitted.


Windshield/Windows: OEM glass or lexan windows are permitted. No visible fasteners.


Chassis: Complete stock chassis and frame rails must be retained. Back-halved cars are not permitted. Front core support may be modified or removed. Aftermarket bolt-on replacement front K-members are allowed (if front shocks bolt to K-member then they must be in factory location). Mini tubs are allowed. Rear frame rails may be notched for clearance.


Engine: Maximum displacement for all engines is 588ci. Small blocks are allowed any deck height. GM Big Blocks are limited to a 10.2 deck height. Ford Big Blocks are limited to a 10.3 deck height. Mopar Big Blocks are limited to a 10.7 deck height.


Turbochargers: Turbochargers are measured at the inducer wheel diameter at the point where the leading edge of the compressor wheel meets the inlet housing. Any type intercooler is permitted. Cannot combine with nitrous oxide except on 2-rotor, 4-cylinder, and 6-cylinder cars.


Superchargers: Cog or gear driven superchargers are permitted. Any type intercooler is permitted. Cannot combine with nitrous oxide. Roots superchargers are limited to a 10-71. Centrifugal superchargers are permitted. Screw superchargers are not permitted.


Nitrous oxide: Small block is permitted to run any type multi-stage nitrous system (cars equipped with canted valve heads are limited to 2 nitrous stages). Big blocks are limited to a single stage nitrous system fed by a single #4 line from bottle to solenoid. (A single stage fogger is permitted or if using a single plate then your limited to 1 fuel solenoid, 1 nitrous solenoid, and 1 purge solenoid, purge must exit engine compartment).


Transmission: Any style automatic transmission allowed. Converter driven planetary transmissions are prohibited. No clutchless manual transmission. Clutch assisted manual transmissions are permitted on naturally aspirated combinations only. Electric shifters or air shifters are prohibited.


Induction: Small Block combinations may run any type induction. Big Block combinations are limited to a single carburetor with cast intake.


Oiling system: Dry sumps are permitted on all cars.


Exhaust: Mufflers or inserts are required on all cars except for turbo cars. Exhaust may exit underneath car or out the front fenders.


Fuel: Gasoline only is permitted. Alcohol or E-85 or other derivatives is prohibited except on roots blown combo.


Street equipment: Functional headlights, taillights and brake lights required. All headlights, brake lights, marker lights, etc must be on car and not removed for any reason. Towing to and from the lanes permitted.


Suspension: Stock style suspension cars only (See weights below for penalty for aftermarket suspension). Four links are prohibited on all cars. Aftermarket direct replacement components such as: front control arms, rear control arms, front coil over shocks, and rear coil over shocks are permitted. Aftermarket rack and pinion steering allowed. Rear leaf springs, springs, shocks, and coil-overs may be moved to accommodate tire clearance, and do not need to be mounted in stock location. Bolt-on or welded sub-frame connectors, rear sway bars, are permitted on all cars. Wheelie bars are prohibited on all cars. Torque arms are only permitted on cars that were originally equipped from factory with it.


TIRES: All cars with power adder must compete on a Drag Radial type tire with the following sidewall designation 275/60/15. (M/T PN 3754R) Naturally aspirated cars are permitted to run a 28.0” x 10.5” slick, no “W” tires permitted.


Minimum Weights: All minimum weights include the driver.


Naturally Aspirated (small block) 2700 lbs.
Naturally Aspirated (big block with standard deck height and conventional head) 2900 lbs.
Naturally Aspirated (big block with tall deck height and conventional head) 2950 lbs.
Naturally Aspirated (big block with standard height and big chief head) 3000 lbs.


Nitrous (small block) 3000 lbs.
Nitrous (big block with standard deck height and conventional head) 3250 lbs.
Nitrous (big block with tall deck height and conventional head) 3300 lbs.Single YSI / F1A / 6-71 Supercharger (small block) 3100 lbs.
Single F1C / 8-71 Supercharger (small block) 3200 lbs.
Single F1R / Xi / 10-71 Supercharger (small block) 3350 lbs.

Single 76mm T6 MFTurbocharger (small block) 2900 lbs.
Single 80mm T6 MFTurbocharger (small block) 3000 lbs.
Single 85mm T6 MFTurbocharger (small block) 3150 lbs.
Single 88mm T6 MFTurbocharger (small block) 3200 lbs.
Single 85mm T6 LFTurbocharger (small block) 3250 lbs

* Small Blocks with single stage nitrous system: deduct 50 lbs.
* Small Blocks with sheetmetal intakes: add 50 lbs
* Small Blocks (NOS only) with 23 degree Chevy heads, 20 degree Ford heads, and 18 degree Mopar heads: deduct 100 lbs.
* Non-Intercooled boosted cars: deduct 50 lbs.

thats a chevy guy typing the rules for ya.....

Engine: Maximum displacement for all engines is 588ci. Small blocks are allowed any deck height. GM Big Blocks are limited to a 10.2 deck height. Ford Big Blocks are limited to a 10.3 deck height. Mopar Big Blocks are limited to a 10.7 deck height


"They" called out the exact deck ht. That's a good thing...At that point I don't see the issue.

Lem Evans wrote:1. Base weight - 3200#
***2. 582 ci-600 ci - add 100#
***3. 10 head bolt Ford blocks 571ci – 600ci - add 50#
***4. 571 ci-600 ci – add 100# (applies to 18 head bolt Ford blocks)
***5. 605ci – 632 ci – add 200#
6. 632ci maximum
7. Big Blocks smaller than 500 ci deduct 100#
8. 10.2 deck height maximum
--------------------------------------------------------------------------------------------------------------------------

10.200" Max...........all 429-460 engines are illegal.

Everything else runs at factory deck height. We run with these guys. They are all Chevy guys that make the rules here. I don't really car though. Turbo cars to the front.

bruno wrote:so why would it matter if it is a tall deck or a short deck block ? if the max cu " is 588 why is there a 50 weight penalty for the tall deck ???

bbf are 10.3" which is a short deck ...........

10.300 is a std deck, 9.750 is bbf short deck, 11.2 is tall deck bbf

BOSS 429 wrote:

bruno wrote:so why would it matter if it is a tall deck or a short deck block ? if the max cu " is 588 why is there a 50 weight penalty for the tall deck ???

bbf are 10.3" which is a short deck ...........

10.300 is a std deck, 9.750 is bbf short deck, 11.2 is tall deck bbf

ok ....so if you built 3 differnt motors using the 3 different deck heights and they all were ended up being 588" would one be more superior to have to add weight ?

richter69 wrote:thats a chevy guy typing the rules for ya.....

x100

Probably not Bruno but with a Chevy it is easier just to not allow the taller decks to control cubic inches.

cool , thanks for the answers ...... im just trying to figure out some things for next year ...... local races , and some x275 events

Nick, Is this a Montgomery deal?

maverick wrote:Nick, Is this a Montgomery deal?

want to run most of montgomery small tire deals . there rules are 275 or 28 x 10.5 , no bars ....pretty simple rules ....... couple of 5.0- 4.90 deals but always blowing shit up ...of course the ar bbc deals ....... i should be very competitive in those classes

here is nmca twist on the class

hot off the press

Thank You for your interest in this new category as we look to move into a new realm of True 10.5/275 style drag racing. It is safe to say this class will go 7.20-7.30s with the front runners solidly in the 7.20s. Could it go high 7-teens? The resilience and determination of hardcore racers never ceases to amaze us.

The past many months we have been pouring over data from several categories in NMRA-Keystone and NMCA-Flowmaster competition from the last 5 years of events as well as popular races around the country. These are the Preliminary rules and we welcome constructive feedback as technology and racer ingenuity has created an evolution that makes a balanced set of rules a very difficult process.

Right off the bat, the data in the field can be contradicting as many variables come into play like 1/8 vs. ¼ mile setups, track conditions, weather conditions, and dozens of other variables. Despite those challenges, we think we are close here based on data we’ve compiled. It is no easy task and we don’t doubt there will need to be some tweaking. Collecting more useful data from the community will help bring a better and more stable set of rules. We will be working hard between the next few events to have a set of Final rules out in early September.

Here are some points we wanted to explain.

Simplicity—there are essentially 6 combinations with a few breaks here and there for some different parts and pieces. 1. Small-Block Nitrous 2. Big-Block Nitrous 3. Small-Block Supercharged 4. Small-Block Turbocharged 5. Small-Block Naturally Aspirated and 6. Big-Block Naturally Aspirated. Those are the basics that make up the popular 275 category, Super Street Outlaw, and are a part of Outlaw 275. We weighed the options of twin turbochargers and some larger big-block combinations with unconventional heads but it comes back to managing the class long-term. Keeping a handle on all of those combinations becomes extremely complicated. Another point we learned through experience is that introducing an unknown entity creates more equality issues. Some can point to certain big money races early in the season and later in the season but the problem we’ve noticed over the years is when a combination isn’t flogged week-in and week-out, then the data is inconsistent. The 6 combinations listed above have consistent data throughout the year in NMRA and NMCA competition as well as monthly races around the country.

Tires: Throw on 28×10.5 inch slicks or 275/60-15 DOT radials and come have some fun. We are also not restricting the rear suspension to stock style or slapping weight on to ladder bars or four-link racing suspensions. Bring your car on stock-suspension, ladder bars, or a racing style four-link and race it. Stock frame rails front-to-back are required to help keep the cars sitting equal. After hearing some suggestions we had considered back-half and other chassis modifications. We feel that if all the cars had a ride height restricted to the stock frame-rails along with stock style front suspension then it was equal. Otherwise, once a back-half car went faster then it would escalate from there. In regards to the rear-suspension, the tires/engine/power management tend to be the ultimate equalizers. Shock/strut technology, torque converters, tire advancements, and power management have made the rear suspension type almost irrelevant. Prove us wrong if you have the data.

Small-Block Nitrous: The prelim rules place the small-block at 2,650 pounds and we looked hard at the NMRA for the data. The limits on that engine combination were pretty wide open. The Street Outlaw rules are opened up more to allow billet heads. We hate to single out any particular racer out by name but let’s not beat around the bush. Sam Vincent is the standard and his Mustang is the only consistent and super-fast data we have on ¼-mile small-block nitrous combinations in this type of racing. Vincent ran a 7.14 once at 2,600 pounds and he has run bottom 7.20s at 190 or so mph a few other times. There have been some 1/8 mile SBX nitrous combinations that have gone quicker to the 1/8 than Sam has run but, again, the ¼ is different. He is a great racer so we are confident using him as the base is a great starting point. The extra 50 is in there because some of the better cylinder head options.

Big-Block Nitrous: The limit is 588ci and conventional heads, which goes back to the statement of dealing with the known commodity. We watched a lot of results through the spring months and took detailed notes on the fast 1/8-mile times from certain players. We also used data from the successful runs by NMCA racers as of late to help mold some big-block rules. Everyone knows running a nitrous engine on the ¼-mile can be challenging but certainly not impossible. We wanted to give the big-block racers a little extra help in terms of power management as well as reliability. Street Outlaw will permit 2-stages of nitrous and a sheetmetal intake with 2 carburetors/throttle bodies. The base weight is also 3,150 pounds, 100 lighter than what we’ve allowed in NMCA and NMRA competition and other popular small-tire/radial categories. For those with a current combination in 275 that consists of a single 4-barrel/cast intake, simply remove 50 pounds from the base weight and add a second stage of nitrous. Come have fun and let it stretch out on the long track. Please note that the 10.2-deck adder has been eliminated but also be warned that a P&G pump is standard equipment in the NMRA/NMCA tech equipment.

We are looking into water injection, for Nitrous combinations only, as some racers have requested this. The NMRA, NMCA, and NMCA West cannot make a decision that would permit it to be allowed at this time. It is currently under review.

As a sanctioning body, we want to again say that we are committed to keeping NMRA, NMCA, and NMCA West drag racing as ¼-mile events.

Small-Block Supercharged and Turbocharged: Let the controversy begin. We’ve gone back and forth, lost sleep, and we might have even kicked the dog once in frustration. Throwing it out there: we can make an argument for either combination going quicker than the other. It is that controversial and complicated. The frustration comes down to the lack of one thing—quantifiable data. There is no actual hard data to say this went this fast and that went this fast and both were raced hard in the ¼-mile.

The two power adders will be a 94mm turbocharger and a supercharger not to exceed 4.20-inch inducer and 11-inch housing (Vortech XB-105 and ProCharger F1X). The only data we have on file for a 94mm combination is from Super Street Outlaw when the likes of Tuten and Kolivas ran quickly around 2-3 years ago. The data, however, is before the popular torque converter technology and some turbocharger upgrades. That puts us on to the speculation of what it can do at a higher weight. On the supercharger front, Bruder’s amazing 4.59 performance has raised a lot of eyebrows. Yes, it was an 1/8-mile performance but then again it was accomplished at 3,400 pounds. How do you make rules on the unknown and speculation? The forced induction small-block will be 94mm and 4.20-inches (105mm). We have thrown something out there and we know there will be some tweaking to do, so don’t get out the flamethrower.

There are provisions for Modular engines in the preliminary rules since those combinations unfortunately rely on OEM cylinder heads and don’t have the wide variety of bore/stroke combinations like the small-block combos.

We’ve also made 2 moves with the current NMRA/NMCA Drag Radial racers and X275 competitors in mind. There are provisions for a reduced weight for engines below 365ci and 88mm turbochargers (any frame size). We want to make the class open enough so if a NMRA/NMCA event is going down in your region you can come in and let it ride on the ¼-mile.

There are also other opened up areas to bring NMRA/NMCA rules back to the mainstream. For example, radiator core supports, one piece front ends, lexan windows, and such. The rulebook got thick and a few areas were outdated in Drag Radial and Super Street Outlaw. We hope this new category has rectified that and helps bring fair and equal competition in 2013.

Please notify us at StreetOutlaw@ProMediaPub.com, please do not just write a simple one sentence statement like you guys suck or you are idiots. Forum banter, phone conversations, etc. are not accepted as submitted rules request. Please respond with data we can use to help mold this into a new and exciting category.

Click to view the Preliminary Street Outlaw Rules.

http://promediapub.com/docs/2013_Street_Outlaw.pdf

rules for nmca :

STREET OUTLAW
Class Overview
Street Outlaw is designed for small block and big block single power adder powered vehicles using D.O.T. 275\60-15 Radial or 28x10.5 Slick. All engine types are permitted a maximum of 588 cubic inches.
Qualifying Information, Ladder Type, & Tree
All Run, NHRA Sportsman Ladder, Pro .400 tree, Heads-Up.
Accepted Products Deadline: NMCA will accept requests from manufacturers to have new products considered for addition to 2014 accepted lists only up until November 10, 2013. After this date, NMCA will consider manufacturer requests for new products for the 2014 season.
Weight Breaks:
POWER ADDER
BASE CI
WEIGHT
NA SB
Unlimited
2300
NA BB (Conventional Head)
588
2600
Turbocharged- 94mm
480
3225
Supercharged-F1X and XB 105
480
3175
Nitrous Oxide SB
480
2650
Nitrous Oxide BB, Conventional Head Only
588
3150
Maximum cubic inch – 588.
Modular Combinations Deduct-75lbs
365ci and Smaller Combinations Deduct-50lbs (Non-Modular type engines)
88mm turbo and smaller Deduct-100lbs
Big-Block Nitrous Combinations deduct 100lbs for a cast intake with a single 4-barrel carburetor or single throttle body.
Note: 2 lbs. /cu in penalty applies for cubic inches over base weight break limit. (Maximum cubic inch still applies)
Note: All weights are with driver & rounded down to the five-pound increment. Ex: A calculated weight of 2968 would be required to weight 2965 lbs. with driver at scales.
CLASS RULES, STREET OUTLAW
1: ENGINE
1.1 COOLING SYSTEM
RADIATOR: Not Required. Upper and Lower core supports may be removed.
WATER PUMP: Any permitted.
COOLING FANS: Any permitted.
1.2 ENGINE: Small Blocks are allowed any deck height. GM blocks are limited to a 10.2 deck height. Ford Big Blocks are limited to a 10.3 deck height. Mopar big blocks limited to 10.7 deck height. Any accepted engine combination permitted in any accepted body style. Engine swapping permitted during event. Stock bore-spacing required for small and big block combinations
1.2a) ENGINE DRIVE BELT SYSTEM: Any permitted.
1.3 EXHAUST: Any Exhaust Permitted. 1.3a) HEADERS & COLLECTORS: Any headers and/or collectors permitted.
1.3b) EXHAUST TUBING/SIZE: Any tubing size permitted.
1.3c) TAILPIPE & EXHAUST RULES: Full exhaust not required.
1.3d) MUFFLER REQUIREMENTS: Mufflers Permitted.
1.5 a) FUEL-DELIVERY SYSTEM: Electric or mechanical fuel pumps permitted. Pressure regulators and any line size permitted. All fuel lines must originate and return to a single, non-segmented, fuel cell or OEM fuel tank. Fuel pump must shut off with a master electrical switch. Any method of artificially heating or cooling fuel prohibited (cool cans, ice, wet rags, Freon, etc.). A valve for removal of fuel (gasoline) during technical inspections is mandatory. Valve must be installed between carburetor/injection and regulator, and should be installed in such a manner that allows a cup to be placed to catch fuel removed from the line. Exit of valve should be capped or plugged in addition to being closed for added safety.
Aftermarket/fabricated fuel tank or cell permitted. Must be located outside driver’s compartment and inside bodylines. If tank or fuel filler is inside trunk, a bulkhead of minimum .032” aluminum or .024” steel must be used between trunk and driver compartment, and tank must be vented to outside of car. When used, fuel cells must have a metal box protecting the part of the fuel cell that is outside the trunk floor. Non-metallic fuel cells or tanks must be grounded to frame. See NHRA General Regulations Section 1.5.
1.5B) NITROUS OXIDE DELIVERY SYSTEM: Any method of artificially cooling the nitrous line is prohibited (cool cans, ice, Freon, etc.).
1.6 GASOLINE: Gasoline as outlined here is the only acceptable fuel for use in this eliminator. The NMCA reserves the right to check gasoline at any time during competition. Gasoline, as defined by the NHRA rulebook, is a mixture of hydrocarbons only.
1.6a) SPEC FUEL: Not required.
1.6b) NITROUS OXIDE: Any NMCA accepted single or multi stage nitrous systems permitted.
 Small Block Nitrous combinations may run any type nitrous oxide multi stage system.
 588 ci Big Block Nitrous Combinations permitted Maximum of two stages.
588 ci Big Block Nitrous Combinations permitted a Maximum of 2 nozzles per intake runner.
Nitrous oxide may not be used in conjunction with any other power adder. If entry is entered as a non-nitrous entry, all solenoids, lines, fittings, and bottles must be removed prior to technical inspection and any competition runs. Nitrous oxide systems must use gasoline only for the fuel enrichment circuit.
1.6c) NITROUS PUSH SYSTEMS: Push systems are permitted. Push systems may only use air as a propellant. Air cylinders must be D.O.T. approved and rated for vehicle transport. Air cylinders must be securely fastened in the vehicle in accordance with NHRA & IHRA safety regulations. All other components of the system must comply with applicable NHRA regulations.
PURGE: Nitrous purge systems permitted.
1.9 OIL SYSTEM: Any permitted.
OIL RETENTION DEVICE: Required. Device may be custom-built ballistic blanket-style or metal-style (I.e., bucket) device. Metal pan may be no longer than the engine from the front of crank shaft to the rear of the flywheel. Pan must be inside the frame rails and fabricated to retain oil/liquid. Pan must attach to the frame via conventional fasteners or straps. Pan must be a minimum of 3inches above ground.
1.10 SUPERCHARGER
ROOTS TYPE SUPERCHARGER: Prohibited.
SINGLE CENTRIFUGAL SUPERCHARGER: Any single commercially available centrifugal racing supercharger permitted that fits the following criteria: Volute housing Inlet diameter - external OD 5” maximum, Housing inducer bore inside diameter 4.20” maximum, impeller wheel exducer diameter .6.00” maximum, discharge diameter - external discharge diameter 3.5” maximum, housing diameter (greatest external diameter of housing not to include discharge) – 11.0” maximum. Impeller wheel and housing may not be stepped, clipped or notched. Housing and wheel must maintain a continuous contour feature from the housing inducer bore to the exducer outlet.
1.10a) PULLEYS/BELTS/GEAR: Cog belt, serpentine belt, and gear drive systems permitted.
1.10d) COMPRESSOR WHEELS: Supercharger compressor wheel must be constructed of cast or billet aluminum and must be NMCA accepted for the specified supercharger unit. Exotic material wheels prohibited.
1.10e) Superchargers are permitted a single forward facing inlet source (ie. such as through the front grille, front valence, or any other front facing inlet).
BLOCK: Billet blocks prohibited. Block must retain stock OEM bore spacing and deck height. Deck spacers (extensions) prohibited.
1.16 ENGINE LOCATION/MOUNTS: Engine location may be altered from stock; however no part of engine or heads may contact firewall. Engine plates and solid engine mounts permitted.
1.17 CYLINDER HEADS
GENERAL GUIDELINES:
TYPE HEADS: Only commercially available cast aluminum or cast iron, two-valve per cylinder heads permitted. Billet, one-off, custom and/or fabricated heads only permitted for Small Block combinations only all others prohibited. Cylinder heads must be overhead valve single spark plug per cylinder design.
1.17a) HEADS, PERMITTED: Original manufacture, generally available heads, mass produced, and commercially available cylinder heads permitted. Spark plug placement and depth must remain stock. Billet, one-off, custom and/or fabricated heads, only permitted for Small Block combinations only, all others are prohibited.
1.17b) HEADS, MASS PRODUCED: Only mass produced, commercially available cast aluminum or cast iron s cylinder heads permitted. Low volume, one off, aluminum cylinder heads prohibited. Small Block combinations permitted to use Billet cylinder heads.
1.17c) HEADS, PORTING: Permitted.
1.17d) HEADS, WELDING/EPOXY: Permitted
1.17e) HEADS, VALVES: Any valve permitted. Maximum 2 valves per cylinder except Modular combination.
1.17f) HEADS, MILLING: Permitted
1.17g) HEADS, PUSHROD SLEEVES: Permitted.
1.17h) HEADS, COMBUSTION CHAMBER VOLUME: No regulations limiting combustion chamber volume.
1.17i) HEADS, PORT PLATES/ADAPTER PLATES: Permitted.
1.17j) VALVE JOB: Any valve job permitted.
1.18 VALVETRAIN
1.18a) CAMSHAFT: Any permitted.
1.18b) LIFTERS: Any permitted.
1.18c) LIFTER BORES: Lifter bores permitted to be bushed.
1.18d) VALVE LOCK: Any permitted.
1.18e) RETAINERS: Any permitted.
1.18f) ROCKER ARMS: Any permitted.
1.18g) CAMSHAFT DRIVE SYSTEM: Any permitted.
1.18h) REV KITS: Any permitted.
1.18j) PUSHRODS: Steel is only accepted material. Composite pushrods prohibited.
1.19 CARBURETORS: Maximum of one 4 barrel or SVI Style permitted on Super Charged or Turbo Charged combinations. Nitrous combinations permitted a maximum of Two (2) 4 barrel or SVI style carburetors permitted. Split carburetor prohibited on all combinations (example: a Dominator, split and offset into two two-barrels).
1.19a) CARBURETOR MODIFICATIONS: Any Permitted.
1.20 FUEL INJECTION: Any accepted fuel injection engine control system permitted. Fuel injection must be electronic. Only mass-produced, commercially available throttle bodies permitted. Dual throttle body permitted on Naturally Aspirated and Nitrous combinations only.
1.20a) MASS AIR SIZE & TYPE PERMITTED: Any permitted.
1.20b) FUEL INJECTOR SIZES & TYPES: Any size/type fuel injector permitted.
1.21 INTAKE MANIFOLD: Cast aluminum or Sheet Metal\Fabricated Manifolds permitted.
1.22 SOLENOIDS: Number of solenoids not restricted.
1.23 TURBOCHARGERS
Only one turbocharger permitted. Turbochargers are permitted a forward facing inlet source (such as through the front grille, front valence, etc). All air entering the turbocharger must pass through the turbocharger inlet. Injection of any liquid, gas, or any other substance into the inlet or exhaust housing is prohibited. Turbocharger compressor wheel must be constructed of cast or billet aluminum only; Exotic material wheels prohibited. Compressor wheel and housing may not be stepped, clipped or notched to meet impeller tip-to-tip dimension (.500-inch will define the tip of the impeller wheel); the contours must be continuous features from the inducer to the wheel exducer. Inlet reducers prohibited.
SINGLE TURBOCHARGER: [a] Maximum size of 94 mm/3.700” - inducer wheel diameter at the point where the leading edge of the compressor wheel meets the inlet housing. Inlet housing is permitted a maximum inlet diameter of 3.780” where the leading edge of the compressor wheel meets the housing.
1.24 AFTERCOOLER/INTERCOOLER: One and only one aftercooler/intercooler permitted. Air-to-air or air-to-water/ice are the only systems permitted. Water and/or ice are the only components permitted in the reservoir. Intercooler may not obstruct driver from exiting the vehicle.
1.24a) AFTERCOOLER/INTERCOOLE LOCATION: There are no restrictions as to location of aftercooler/intercooler.
1.25 POWER ADDERS: Any single power adder (nitrous oxide, supercharger, turbocharger) permitted with engine combination. Water injection is prohibited. See sections 1.6, 1.10, & 1.23.
1.26 CRANKSHAFT: Cast iron or steel crankshaft required. Composite and/or multi-piece crankshafts prohibited.
1.27 CONNECTING RODS: Any steel, aluminum, or titanium connecting rods required. Composite connecting rods prohibited.
1.28 HEAD GASKETS & QUENCH AREA: No restrictions.
1.29 PISTONS, PINS, RINGS: Any piston, pin, ring combination permitted.
1.30 BOOST CONTROLLERS: Electronic or automated boost controllers permitted. Boost controller, whether electronic or manual, must be a standalone device and may not be incorporated into any traction control system (or engine control feedback loop) of any type. Blow-off valve, regulators, and associated tubing and hardware must be contained within the engine compartment. C02 bottles utilized to control waste gate functions may be contained within interior.
1.31 WASTEGATE & PRESSURE REGULATOR: Any permitted. Mufflers are not required on wastegate outlets.
1.32 VISIBLE COATINGS: Visible coatings are permitted. 1.33 “O” RINGING OF BLOCK: Permitted.
2: DRIVETRAIN
2.3 CLUTCH: Maximum Dual disk clutch permitted.
2.4 DRIVESHAFT: Driveshaft required to be only steel or only aluminum regardless of origin or manufacturer.
2.11 REAREND: Any automotive type rearend permitted.
2.12 MANUAL TRANSMISSIONS
MANUAL TRANSMISSIONS: OEM or aftermarket transmissions with a maximum of 5 forward speeds permitted. Clutchless models permitted. Any gear change must occur from direct action by the driver. Pneumatic, electric, hydraulic, etc. shifters prohibited. Torque converter not permitted with this type of transmission.
2.13 PURPOSE BUILT TRANSMISSIONS: Prohibited.
2.14 AUTOMATIC TRANSMISSIONS
(OEM American transmissions or replicas of OEM American transmissions that use planetary gears)
AUTOMATIC TRANSMISSIONS: Any OEM American automatic transmission or a replica of an OEM American automatic transmission that uses planetary gears and torque converter permitted. Transmission-to-engine adapters are permitted. Lock-up transmissions/torque converters permitted only in transmissions that came OEM-equipped (ex: AOD, AOD-E).
Trans brakes permitted. Automatic transmission entries run at listed base weights. Pneumatic, electric, hydraulic, etc. shifters permitted. Any gear change must occur as a result of an internal function of the transmission or from direct action by the driver. Clutch not permitted with this type of transmission.
3: BRAKES & SUSPENSION 3.1 BRAKES BRAKES: All cars must have front and rear hydraulic brakes. Automated brakes or any type of traction control is prohibited. Application and release of brakes must be a function of the driver’s foot. Line loc permitted on front wheels only. Any other electric, pneumatic, or hydraulic device in the system is prohibited. 3.2 SHOCK ABSORBERS SHOCK ABSORBERS: Each vehicle in competition must be equipped with one operative shock absorber for each sprung wheel. Shock absorbers may be either hydraulic or friction type, securely mounted and in good working order. 3.3 STEERING STEERING: Manual or power assisted aftermarket steering system in stock location mandatory. 3.4 SUSPENSION, FRONT 79 & NEWER FRONT SUSPENSION: All cars must retain stock front suspension, aftermarket tubular control arms, coil over kits, or OEM front strut retrofits are permitted. Replacement Bolt-on Lightweight K-Members are legal, but must be a direct bolt on, no welding modifications permitted. Stock wheelbase will be enforced on all vehicles. **The only front suspension bolt-on kit deemed legal by the NMCA are the CHRIS ALSTON, AJE, HEIDTS, Smith Racecraft and *FATMAN bolt-on kits (for 62-67 Nova's, 67-69 Camaro's & early Mustangs) Total Control Products Coil Over Conversion Kits, and The Rod & Custom Motorsport Mustang II kit for 64 1/2-66 Mustang, Part #RC-106 & Skinny Kid front end kits for late model Mustangs.... Kits must be installed as instructed and not modified. All kits must be mass produced and commercially available to the public. Custom one off front end kits prohibited. 3.4a) K-MEMBERS: Aftermarket K-Members permitted, but must attach to the chassis using only the original factory OEM type mounting location. No part of the K-member may be permanently attached to the chassis. K-member may be modified in oil pan area to allow oil pan enlargement or removal. 3.4b) STRUT TOWER: Factory strut tower required. No modifications may be made to the strut towers other than the following: 1) roll bar or roll cage may be welded to the strut towers for safety purposes 2) clearancing of strut tower permitted for supercharger or turbocharger tubing. 3.4c) CONTROL ARMS: OEM or tubular stock type control arms required which are attached in stock location. 3.4d) SHOCKS/STRUTS: Aftermarket stock-type struts and shocks permitted provided stock attachment location used. Front struts/shocks must be stand alone and may not be adjustable during run via any means. 3.4e) SPRINGS: Aftermarket springs permitted. 3.4f) COIL OVERS: Coil over shocks and struts permitted. Stock OEM mounting location required. 3.4g) CAMBER PLATES: Bolt on type camber plates permitted. Bolt on plate may be tack welded to strut tower to prevent movement (2.0-inch max. length), otherwise welding prohibited. Camber plate may only be attached to top flat portion of strut tower. Attachment to any other structure prohibited. 3.4h) SPINDLES: Only stock OEM or NMRA accepted, bolt-on, commercially available aftermarket spindles permitted. NMRA accepted spindles are Anthony Jones Engineering, Santhuff, & Strange. 3.4 SUSPENSION, FRONT 78 & OLDER FRONT SUSPENSION: 3.4a) K-MEMBERS: Aftermarket K-Members permitted. K-member may be modified in oil pan area to allow oil pan enlargement or removal. 3.4b) STRUT TOWER: OEM strut towers required - may be modified / clearanced for headers/exhaust. 3.4c) CONTROL ARMS: OEM or tubular stock type control arms permitted. 3.4d) SHOCKS/STRUTS: Aftermarket struts and shocks permitted. Front struts/shocks must be stand alone and may not be adjustable during run via any means. 3.4e) SPRINGS: Aftermarket springs permitted. 3.4f) COIL OVERS: Coil over shocks and struts permitted. 3.4g) CAMBER PLATES: Bolt on type chamber plates permitted. 3.4h) SPINDLES: Accepted, bolt-on, commercially available aftermarket spindles permitted. 3.4 SUSPENSION, REAR REAR SUSPENSION: Stock type suspension, including leaf springs, stock 3-link or 4-link, racing 4-link, and ladder bars permitted. Rear coil-over shocks permitted. Stock Type Suspension: Must utilize stock and/or aftermarket direct replacement type suspension components including shocks, springs, (leaf springs may be moved inboard), and/or control arms. Aftermarket leaf spring kits permitted. 3.4a) 3-LINK AND 4-LINK: Racing or stock-type 3-link and/or 4 links permitted. 3.4b) LADDER BARS: Welded on ladder bars using fabricated front cross member support permitted. Ladder bars permitted. 3.4c) REPLACEMENT CONTROL ARMS & LEAF SPRINGS: Replacement upper and lower control arms and leaf springs permitted. Control arms may use any type bushing, bearing, or rod end. Control arms may be adjustable to any length.
3.4d) PANHARD BARS/WISHBONE: Permitted. Panhard bars must be located aft of rearend housing. Panhard bars may be welded. Wishbone cannot be constructed in a manner that allows the wishbone to function as a ladder bar and still receive stock suspension weight break.
3.4e) SWAY BARS: Aftermarket or factory sway bars permitted. Aftermarket sway bars may be welded to both chassis and rearend housing. 3.4f) TORQUE ARMS: Permitted. 3.4g) REAR SHOCKS & SPRINGS: Any permitted, including coil over shocks and springs. May be relocated inboard. Electronic or adjustable rear shocks are permitted. 3.6 WHEELIE BARS: Prohibited 4: FRAME 4.4 FRAME: Stock, unaltered frame rails required in front subframe. Subframes on unibodied cars may be joined under car. Maximum size material to be used; 2x3x1/8 inch rectangular tubing or 1 5/8 O.D. inch round tubing (.118MS or .083CM). If connector protrudes through floor, floor must be completely welded to connector. Stock rear subframes are required, but outer frame rail portion only may be notched for tire clearance only. When notching, stock inboard section of rear frame rails must remain stock, unaltered, and in stock location. Rear frame rail must remain in OEM stock condition in all areas. Notching (vertical)for rearend clearance permitted only on 2005 & Up Ford Mustang rear frame rails, which may be notched a maximum of 2-inches vertically for rear end housing clearance only. The upper part of the rail must remain intact. Complete rear frame must be visible for tech purposes. 4.5 GROUND CLEARANCE GROUND CLEARANCE: Minimum 3 inches from front of vehicle to 12 inches behind centerline of front axle; 2 inches for remainder of vehicle, except oil pan and exhaust headers. 4.12 WHEELBASE WHEELBASE: Entries must retain stock wheelbase + or - 1 inches of stock. Maximum variation from left to right and front to back is 1 inch.
5: TIRES & WHEELS
5.1 TIRES
TIRES – FRONT: Front tires must have a minimum tread width of 4.5 inches.
TIRES – REAR: Accepted D.O.T. Radial tires are required. . No “W” tires permitted. Tire shaving is prohibited. All Drag Radial Tires Must have the following 275\60\15 and D.O.T sidewall designation. 5.1a) PERMITTED STREET-TYPE D.O.T. RADIAL TIRE:
 275\60\15.
5.1b) PERMITTED RACING SLICK: Maximum actual measured tire size is as follows: Actual measured tread of tire is limited to 10.75 inches by 28 inches tall. Tire width will be measured by a “go-no go” gauge. Tire width and height will be measured after conclusion of run at scale area. Tire tread may not extend outside fenders. Radial Racing Slick Prohibited. Also accepted: any approved radial-construction tire with a D.O.T. tread wear rating of 180 or greater. Maximum actual measured tire size is as follows: Tire tread may not extend outside fenders.
5.2 WHEELS: Permitted
6: INTERIOR
6.1 INTERIOR: Must maintain stock appearance; including factory appearing dashboard, headliner, & steering column cover. Heater/air conditioners may be removed.
6.4 CARPET: Floor and tunnel where visible must be upholstered or carpeted. Headliner required.
6.5 SEATS: Upholstered OEM or aftermarket upholstered driver seat in stock location is required. Passenger and rear seat may be removed; area must be carpeted or upholstered.
6.6 DOOR PANELS: Door panels must be covered.
6.7 STEERING COLUMN: Aftermarket steering column permitted. Removable steering wheel permitted.
6.8 GAUGES: Aftermarket gauges permitted.
6.9 PEDALS/PEDAL LOCATION: Stock type pedals, linkage, and location required.
7: BODY: Vehicle must retain original or NMCA accepted appearances and profiles for year and make of body. Original OEM body shell (unibody structure from firewall to taillight panel) must be intact. Lightweight body parts are restricted to hood, fenders, front bumper cover and trunk-lid/hatch/deck-lid. Doors, hood and/or trunk lid must be hinged or lift off. Funny car bodies prohibited. Body must be finished and painted. Alterations or aerodynamic modifications such as “chopped tops”, “channeling”, “sectioning”, “shortening” or “scaling down” prohibited. If a convertible top is used as an entry the use of ANY mechanism under or above the convertible top is not permitted. Ex: Building a cover that would be located above or below the convertible top, using straps below or above the convertible top, etc. Convertible top does not need to be operational. Convertible entries must compete with top up.
7.1 ADVERTISING
GRAPHICS: Graphics (for advertising or creative purposes) permitted on entire body, including doors, hood, rear quarter panels, front fenders, wing, etc.
CONTINGENCY DECALS: In order to be eligible for NMCA official contingency program, all contingency decals are required to appear only on the rear quarter windows or rear window in a clear and organized fashion. Contingency decals may not be overlapped or modified. Other decals and sponsorship (non-contingency) may appear on bodywork, front end, and on windows.
NMCA REQUIRED DECALS: The following decals are required for competition in NMCA events.
 NMCA Windshield Decal – must be installed on top of windshield. This NMCA decal must be the only decal on top of windshield. Other vehicle sponsor decals may be placed at base of windshield.
 NMCA 2013 Drag Racing Series “Side” Decals – must be installed on each side of vehicle on quarter windows.
 Class Sponsor Decal – class sponsor decal must be installed on base of windshield on the passenger side.
 Permanent Numbers – permanent numbers are required for competition in this class.
 Sponsor Shootout Decal-Competitors must prominently display the sponsor’s official shootout logo directly behind the head light, on each front bumper, on both sides of the vehicle, using the official decal supplied by NMCA.
7.2 SPOILERS
REAR SPOILER: Rear spoilers permitted, may not extend more than 26 inches from the transition point with the body to the rear most portions. Rear spoiler may not be molded into body (Pro Mod Style).
Spoilers must be stationary during entire run. A positive locking device to prevent movement required. Spring loaded spoilers prohibited. Spoiler spill plates (if used) may be a maximum of 12” in height.
7.5 FIREWALLS: Stock, unaltered firewall required.
7.6 FLOOR/TRUNK PAN/TRANSMISSION TUNNEL
FLOOR: Stock, unaltered floor-pan, except for through the floor sub frame connectors and shifter clearance, required from firewall to back bumper. Flat area of floor-pan after “kickup” for rear end (behind rear seat area) and rearward may be replaced with a minimum of .024” inch thick steel or .032” inch aluminum. Magnesium is prohibited. Transmission tunnel must remain stock & unaltered. Removable floor-pan sections and/or transmission tunnels prohibited.
7.7 HOOD/SCOOP: Lightweight cowl induction-style hood permitted. Forward mounted scoops permitted for N\A and Nitrous combinations only. The entire induction system must be completely covered by hood, which must be part of the vehicle hood. Hood must be attached separately in a conventional manner and must lift off or be bolt on.
7.9 WINDSHIELDS/WINDOW: Lexan Permitted. Driver and passenger windows must be closed during racing. Windows do not have to be operative. Window tint is prohibited forward of the “B” pillar.
7.10 BUMPERS: No body components, bumper add-ons, spill plates, chin spoilers, body kits, license plate frames, etc. are permitted to be added to the nose of the vehicle.
7.11 FENDER SPLASH PANS: Splash Shield on all combinations may be trimmed for supercharger and header clearance. 1978 and older vehicles may remove inner fender splash shields. 7.12 GRILLE: Stock OEM type grille permitted
7.13 WHEELWELLS: Aftermarket wheel tubs permitted. Material used to add to the width of the inner wheel-well may be steel, aluminum, fiberglass, or carbon fiber.
OUTER FENDERS: Leading and trailing edges of outer fenders may be trimmed for tire clearance, maximum 2”.
7.14 RAM AIR/ENGINE AIR PANS: Ram-air/cold-air kits permitted. Headlights/taillights/hazard lights may not be removed or modified for air induction. Final acceptance is with the discretion of NMCA Technical Department
7.15 DOORS: Driver and passenger doors must be functional and operable from inside and outside of vehicle.
7.16 AERODYNAMICS: Taping of any body parts, seams, or front end prohibited. Removal of side mirrors permitted. Head light covers permitted. Fog light covers permitted.
7.17 BODY KITS: Accepted, commercially available body kits permitted. Filling in the lower valance permitted if completed in a permanent manner (taping not permitted).
7.18 COWL AREA: Cowl area of vehicle must be unaltered.
7.19 FRONT FENDERS/FRONT FASCIA: Stock or OEM dimension light weight replacement front fenders required. Front fascia overhang may not exceed stock. May be one-piece front end. Filled-in lower valance, permitted. Single Hole in front bumper for the purpose of air induction permitted on turbocharged and supercharged applications only.
8: ELECTRICAL
8.1 BATTERY/CHARGING SYSTEM: Battery may be relocated. Charging systems optional.
8.3 IGNITION: Any battery-operated ignition permitted. Any distributor drive system permitted.
8.5 STARTER: All entries must be self-starting with on-board starter.
9: SUPPORT GROUPS
Bracket racing aids such as optical sensors, delay boxes, stutter boxes, etc. prohibited. Throttle stops prohibited. The application or use of any device, mechanical or electronic that permits the driver to ascertain the position of their vehicle in relation to the starting line is prohibited.
9.2 ONBOARD DIAGNOSTICS/DATA RECORDERS: Onboard diagnostics and data recorders used to monitor and record parameters such as a driveshaft speed, acceleration, nitrous timing, chassis strain, suspension travel, etc.,
permitted. Wide band oxygen sensors permitted. “Playback” tachometers permitted (i.e. Autometer Dual Channel Ultimate II tachometers, and the use of its features). Laptops permitted in vehicle when secured in acceptable fashion.
9.7 BOTTLES: All bottles must be securely mounted, stamped with a minimum DOT–1800lb. rating, and identified as nitrous oxide. Bottle located in driver’s compartment must be equipped with the correct relief valve per manufacturer recommendations and vented outside the driver’s compartment. The use of any agents other than nitrous oxide as a part of, or mixed with, this pressurized fuel system is strictly prohibited. Commercially available, thermostatically controlled, blanket type bottle heaters are acceptable. Any other method of heating bottles in vehicle is prohibited.
9.8 TOW VEHICLES: Vehicles may be towed to the rear of the staging lanes.
10: DRIVER
10.4 CREDENTIALS: See general regulations.
11: CLASS & SAFETY REQUIREMENTS
It is the participant’s responsibility to familiarize oneself with the class requirements as found in the 2013 NMCA rulebook and the safety requirements as found in the 2013 NHRA rulebook.
The participant agrees that the participant bears the ultimate responsibility at all times to ensure the safety of participant’s vehicle and to ensure that participant complies with all applicable NHRA & NMCA rules. The participant agrees that participant is in the best position to know about the construction and operation of participant’s vehicle, equipment, and clothing, and whether there has been compliance with all applicable NHRA & NMCA rules.
12: STREET-LEGAL REQUIREMENTS
Headlights and tail lights for year & make of body used mandatory. Head lights & tail lights required to be functional

bruno wrote:These are the rules im going by ........
Windshield/Windows: OEM glass or lexan windows are permitted. No visible fasteners.

This one has me baffled! How do you install lexan windows without visible fasteners?

Doug Rahn wrote:

bruno wrote:These are the rules im going by ........
Windshield/Windows: OEM glass or lexan windows are permitted. No visible fasteners.

This one has me baffled! How do you install lexan windows without visible fasteners?

Seen it done many times ..... reinstall factory molding

my car has lexan throughout, you cant tell the front and rear are not factory, i put the rivets where the factory molding conceals them. Easy deal.... the black boarders look like ass imo.