Crank and rods for 1000hp?

Building a 598 this winter
NA, A460 heads, 7000 rpm max
What would you recommend for crank and rods?
Is the forged Lunati stuff good enough, or is it time to step up to Callies, Oliver, etc?

I use the Lunati cranks in engines in that hp range. With Eagle rods and a 2000 bolt upgrade.

Oliver or Callies would be a good insurance policy , but I have had good luck running the above.

dfree383 wrote:Callies stuff is nice for the money

What he said

Eagle offers a 4340 H beam and a 4340 I beam. Is one better then the other?

HorsinAround wrote:Eagle offers a 4340 H beam and a 4340 I beam. Is one better then the other?

That's a question that is asked a lot.

Short of taking two rods of the same weight and length and material putting both ends on two centers in a press and loading them and see which one deflects the most.

But then there's compression and tension loading parameter's also to test.

I kind of lean towards the I beam being the stronger of the two.

Most all buildings and bridges and also big trailers are I beam.

So LOL I have no idea, sorry I am no more help.

My gut feeling is for the same weight the I beam is the ticket.

The Eagle I beam is a lesser rod than their H beam.

An Oliver/Callies/Crower I beam could be a different matter.

I agree an I-beam billet rod is stronger. All my best SBF stuff is lightweight billet I-beam.
Just wondered if it was necessary with a 598 BBF

.

I've got a Scat crank and Scat H-beams w ARP 2000 bolts in my A head 598. The crank has some custom work by Adney Brown at Performance crankshaft. Cut the diameter of counterweights and knife edged. It also was converted to a shorter Boss 9 style crank snout. It has held up well and is above 1K hp.

I had a very similar 588 that was a good engine as well. Same deal as above except it didn't have the Boss 9 snout.

David Cole wrote:I've got a Scat crank and Scat H-beams w ARP 2000 bolts in my A head 598.  The crank has some custom work by Adney Brown at Performance crankshaft.  Cut the diameter of counterweights and knife edged.  It also was converted to a shorter Boss 9 style crank snout.  It has held up well and is above 1K hp.  

I had a very similar 588 that was a good engine as well.  Same deal as above except it didn't have the Boss 9 snout.

It's been a lot of years but, the A460 block and the crankshaft are still alive. The pistons and rods were replaced as needed. A 598" last time I heard.

If you want to run the BOSS 429 snout, Scat has them off the shelf in 4.300 and 4.500 stroke.

Is there an advantage to the Boss 9 snout?

fastashley wrote:Is there an advantage to the Boss 9 snout?

It's shorter. The weight of the damper is closer in to the block, so less stress on the crank and #1 main. It's std on the Callie's crank. At the time I bought mine the Callie's was not available yet and Scat didn't have it either unless you had them make you a custom crank. It does take a different damper. ATI and Innovators West make them for the application. I have an ATI. It's essentially a SBF inner hub with a BBF outer shell so the timing marks are in the right place.

Lem Evans wrote:

David Cole wrote:I've got a Scat crank and Scat H-beams w ARP 2000 bolts in my A head 598.  The crank has some custom work by Adney Brown at Performance crankshaft.  Cut the diameter of counterweights and knife edged.  It also was converted to a shorter Boss 9 style crank snout.  It has held up well and is above 1K hp.  

I had a very similar 588 that was a good engine as well.  Same deal as above except it didn't have the Boss 9 snout.

It's been a lot of years  but, the A460 block and the crankshaft are still alive. The pistons and rods were replaced as needed. A 598" last time I heard.

That was a good un. James won the Jeg's Super Quick championship with it I was told.

JBR-3 wrote:I've never seen an I-beam titanium rod (doesn't mean they don't exist!)
.

I was handling at a set of Crower Titanium I-Beam rods yesterday.

Could just use an SBF damper on a Boss snout then?

Never mind, should have thought before tying.

.

David Cole wrote:

fastashley wrote:Is there an advantage to the Boss 9 snout?

It's shorter.  The weight of the damper is closer in to the block, so less stress on the crank and #1 main.  It's std on the Callie's crank.  At the time I bought mine the Callie's was not available yet and Scat didn't have it either unless you had them make you a custom crank.   It does take a different damper.  ATI and Innovators West make them for the application.  I have an ATI.  It's essentially a SBF inner hub with a BBF outer shell so the timing marks are in the right place.

And, if you're running belt driven boost, they'll take a lot more side loading.

fastashley wrote:Could just use an SBF damper on a Boss snout then?

Big Block Ford crankshafts are also available with a SMALL block length snout as well so a small block damper is then used; 3.000" long to a Boss' 3.590".

JBR-3 wrote:Randy, sounds interesting on the Crower I-beam Ti rods.

What size are they ? Engine ?

These are Big Block Chevy for a Super Modified oval track engine; 6.850" long.

Crower makes them "Custom" almost any size you want.

You can also get BB Chev snout. I have a front cover for one.
For 1K HP you really don't need anything special. Standard weight forged crank and H beam rods with 2000 bolts will live a long time. I think the Lunati cranks are Scat forgings.

Scott Foxwell wrote:You can also get BB Chev snout. I have a front cover for one.
For 1K HP you really don't need anything special. Standard weight forged crank and H beam rods with 2000 bolts will live a long time. I think the Lunati cranks are Scat forgings.

Chris keeps telling me that they are the same but, I have several observational issues with that. They may or may not be the same forging but, they ain't finished the same.