Tm Ent. VS Kaase Boss 9 Heads

I was just reading the PHR write up on the TM Enterprises Boss build. Very cool build!!

How do these compare to the Boss 9 heads? Are they much the same or is one more of a stock replacement? It sounds like the TM's are more stock type while the Boss 9 heads are of a newer design.

Gonna be a long time before I can afford them anyway, just wondering/dreaming!!!

Bill

Kaase has fixed all the problems that the old heads had plus they will fit on all the blocks ( 429-460 )

res0rli9 wrote:Kaase has fixed all the problems that the old heads had plus they will fit on all the blocks ( 429-460 )

BOTH have addressed the bad casting problems of the originals.

The TM head is probably closer to being an original replacement although the valve size is larger than original however, they use the original valve train / rocker arm, top end oiling and drain-back arrangment.
Which one is BETTER is totally a personal decision.

BOTH use head gaskets instead of the original "O" rings.

rmcomprandy wrote:

res0rli9 wrote:Kaase has fixed all the problems that the old heads had plus they will fit on all the blocks ( 429-460 )

BOTH have addressed the bad casting problems of the originals.

The TM head is probably closer to being an original replacement although the valve size is larger than original however, they use the original valve train / rocker arm, top end oiling and drain-back arrangment.
Which one is BETTER is totally a personal decision.

BOTH use head gaskets instead of the original "O" rings.

----------------------------------------------------------------------


the above is true, jk extended the ehx rocker so you dont have to clearance the deck for pushrod,like the stock blocks had,he also has the first style which the stands are cast into heads, the tm heads is same as stock with added alum,and deck,so is jtk's head, both are nice,neither need the o rings of yesteryear. tm has 2 styles,jk has one only?,both use stock intake,or valve covers,ive been botting oem boss 429 heads on stock,no boss blocks since 1985 or so,this has been a long time comming

both will,and can make good power,

-rich

Would Time of Delivery be the biggest difference between the heads? or is the wait significant on both?

Thanks Randy and Rich!

Being able to bolt them onto regular production blocks sure makes it much more do-able for most folks.

It is great to see these legendary heads live on!!

Bill

what size Valves are in the heads now the Factory came with 2.28 intakes... on a 3/8 stem.....


Randy

The Kaase Heads take a BBC +.100 Valve with the 11/32 stems. 2.30 Intake 1.88 exhaust are std.

Last I saw the second version of the TM head looks like a copy of the Kaase head in the combustion chamber.

As far as HP potential I'd believe they are both Equal out of the box, providing you get equal valve sizing.

I would love to have a set but I have a set of the Originals on the shelf along with the other components to put it all together so I guess I will have to run original stuff.....


Randy

the Coug wrote:what size Valves are in the heads now the Factory came with 2.28 intakes... on a 3/8 stem.....

Randy

The alternate design "high performance" TM head has 2.400" intake valves with 11/32" stems.
I think the "original replacement" TM head has 2.300" intake valves, (might be 2.350"), with 11/32" stems but, their website should tell you for sure.

I have a set of 2.40 intakes and 2 inch exhaust for mine 11/32 stems cut to fit.....

But for the right price I may be willing to let my factories go..... along with many of the other parts for it......



Randy

the Coug wrote:I would love to have a set but I have a set of the Originals on the shelf along with the other components to put it all together so I guess I will have to run original stuff.....


Randy

nothing wrong with the org stuff, i used it for years, or you could sell your stuff,and buy the others

i just receved more boss 429 parts, (TM)

love these heads, great to work with. i dont think they be here long


-rich

BOSS 429 wrote:i just receved more boss 429 parts,

love these heads, great to work with. i dont think they be here long


-rich

Sounds like fun!! It would be nice to get "more boss parts"!!! It would be nice to have "any" boss parts!!!

You WILL be posting pics right????

Bill

this thing locs up when i try

Diggindeeper wrote:Would Time of Delivery be the biggest difference between the heads? or is the wait significant on both?

if your check is good i can get them in about 2 weeks or so




-rich

people have been asking me which head is better? best?

neither,both are great, J K'S way is to try and make it easier to bolt on,not clearancing the top of block, thats not a big deal, and i bet some will still have to a little, stock rockers fit tm head,can convert to jessel,t and d. and soon there will be another rocker avb.

both made deck thicker, better alum, better where the ehx stand /head bolt aera are,thats where one of my oem boss 429 heads broke years ago, too much lift? no, valve spring presser is the killer. with these heads thats not a problem for people who will be doing a race engine.


-Rich

I sell the T M heads



wh

one more thing, which ever head you buy i suggest doing the return oil line from back of each head to pan




-rich

BOSS 429 wrote:

Diggindeeper wrote:Would Time of Delivery be the biggest difference between the heads? or is the wait significant on both?

if your check is good i can get them in about 2 weeks or so




-rich

thats a good turn around. the check would be good but the wife would kill me

who needs siding, and gutters

what percent more for a long block w/the TM heads than say long block w/ a set of A heads roughly

Diggindeeper wrote:what percent more for a long block w/the TM heads than say long block w/ a set of A heads roughly

It's not like the stuff is unavailable ... it's all available so, if you're going to nit-pik about the time frame then you should pick a different avocation.

IMHO, usually...by the time a racer gets to their second or third season...they've learned that to be ready for the next season, they order any custom or non shelf parts as soon as the current season ends.

Diggindeeper wrote:what percent more for a long block w/the TM heads than say long block w/ a set of A heads roughly

if your using good parts for the a, like shaft rockers,etc, then not a lot of diff,

call me,i could give you a quote on a done engine




-rich

thanks. close enough guesstimate for me.

Will Johns new tunnel ram look anything like the AR unit?


Tom