New Aluminum Cylinder Heads for the Hemis

[bubski]

Originally Posted by Jim Hanig

Why not give aluminum heads to all engines ?

Bubski's thinking is !! this is Stock, Super Stock !?? Why in the world do you need heads that never came on your combo ?? So what if a set of cores costs 2-3K for the most exotic combos !! The new aluminum heads will cost you at least close to 2K before you send them out for a 5K valve job n CC !! Now Bubski realizes there's no advantage to them !! HAHAHA !! When a racer picks a combo its up to that racer to decide if the parts available and the price you would pay for them are worth running that combo !! Bracket 1 and 2 allow any head you desire !! Not S/SS !! Will this nonsense ever end ??

[James Hensler]

Ok here is a thought! Name a manufacturer making cast iron heads for an A/H motor? Tic tok tic tok there isn’t any so Hemi’s break and when they do it a big deal so what do you do? There isn’t any anywhere to replace them! So the nhra will have to kill the combo and that’s not going to happen!


People talk about not allowing aluminum heads in if that engine never came with them. Well explain the GT classes allowing rear wheel drives and engine other than 4 cylinders!

[Dyno]

In 1965 the Race Hemi came with an aluminum head because the aluminum front group ( fenders, hood, doors, etc.) was no longer allowed . So there is a precedent for the approval. I know of no Hemi racer jumping on this change.

[bubski]

Bubski would like to clarify his position !! To give everyone aluminium heads is absurd !! they're simply not available to all combos and it would give those with that choice an advantage over the other combos more than likely !! With the exception of SS/AH there's a lot of different engines ,makes ,etc in the regular classes and to have parts only available to your combo and not the next guys is wrong !! SS/AH is the only exception I can see to the head rules 1. they only race against themselves in class !! 2, those heads are actually hard to find ,not just an excuse for wanting an advantage like the 396 gets its open chamber aluminium head now and countless others !! factory heads for those exist in real life !! No reason to give them anything but what came on them !! Again AH is a totally different animal and they're gonna need something if they're gonna continue to race !! Maybe with these new blocks coming out heads are in the works for them also !! Who knows they might be iron !!

[Don Kennedy]

Originally Posted by James Hensler

Ok here is a thought! Name a manufacturer making cast iron heads for an A/H motor? Tic tok tic tok there isn’t any so Hemi’s break and when they do it a big deal so what do you do? There isn’t any anywhere to replace them! So the nhra will have to kill the combo and that’s not going to happen!


People talk about not allowing aluminum heads in if that engine never came with them. Well explain the GT classes allowing rear wheel drives and engine other than 4 cylinders!

James The GT classes rules are separate from the traditional Super Stock Classes and were made to accommodate the next step in modern racing in the 80s at that time .I feel the GT class has made a special input for Super Stock and FJ smith started the front-wheel to rear-wheel cars as part of the Progression of Super Stock it has been a significant positive effect in Modern racing since then> Some changes to rules have to be made to accommodate the future of each combination

[James Hensler]

Don to totally agree I was just using it as an example of other things allowed in that was not from the factory

[Ray Barton]

These heads have been available for 10 years from Mopar. This was the head we put on the 528 crate engines. Edelbrock told me they have a P.O from Mopar and are scheduled for late December. -Ray Barton

[James Hensler]

That’s good but I don’t think I’m personally going to change my Westcott heads for the aluminum

[charlie westcott]

There is a 559-M2 head on the list.
Thats what I was referring to.
The Mopar alum head looks to be the best candidate to me, but I dont see any reason to use them with a 60# weight penalty.
There is no performance gain, possibly a loss by putting the same port design in an aluminum head.

[theman440]

Charlie,
Can you explain why this is?

"There is no performance gain, possibly a loss by putting the same port design in an aluminum head.[/QUOTE]