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[Larry Hill]

When you go to a store to buy milk and price is marked $2.50, at check out the milk rings up at $3.75. The purchase is made and latter consumed but the sour taste of the milk lasts forever. The best surprise is no surprise.

[Billy Nees]

Originally Posted by Larry Hill

When you go to a store to buy milk and price is marked $2.50, at check out the milk rings up at $3.75. The purchase is made and latter consumed but the sower taste of the milk lasts forever. The best surprise is no surprise.

No, they're NOT correct!
We were SOLD the aftermarket head premise based on the fact that you could use the aftermarket head with a 10 HP weight penalty based on the factor of the correct iron head. This is now being treated as if the aluminum head is an entirely different combo, which it's not.
It was never SOLD to us as being a different combo. It HAS been re-constituted and FED to us in this way.

Here I go "hi-jacking" another one of your threads, sorry Buddy.

[Larry Hill]

Billy I always try to go by the rules as written. I dont think you're hijacking anything.

[Billy Nees]

Originally Posted by Larry Hill

Billy I always try to go by the rules as written. I dont think you're hijacking anything.

It's a funny thing!
If you look at a Rule Book or go on-line and look at a Rule Book, the "rules" regarding aftermarket aluminum heads aren't written down anywhere.
Must be written in the Super Top Secret Tech Inspector Only Rule Book!

[Rory McNeil]

Billy, regarding the whole aluminum head deal, supposedly the aftermarket heads were allowed because supposedly usable production castings were getting hard to find. Considering the majority of the "allowed" heads were made in huge numbers, it seems odd to me that guys were having trouble scrounging up SB & BB Chevy castings, SB and FE Ford heads, SB & BB MoPar wedge heads, yet the guys with truly rare heads, like the 413 and 426 Max Wedge guys somehow manage to able to carry on. Just seems a bit odd. Maybe as a guy whose combination was not blessed with aftermarket heads,(or intake manifold), at least for Stock, I am somewhat skeptical .

[Billy Nees]

Originally Posted by Rory McNeil

Billy, regarding the whole aluminum head deal, supposedly the aftermarket heads were allowed because supposedly usable production castings were getting hard to find. Considering the majority of the "allowed" heads were made in huge numbers, it seems odd to me that guys were having trouble scrounging up SB & BB Chevy castings, SB and FE Ford heads, SB & BB MoPar wedge heads, yet the guys with truly rare heads, like the 413 and 426 Max Wedge guys somehow manage to able to carry on. Just seems a bit odd. Maybe as a guy whose combination was not blessed with aftermarket heads,(or intake manifold), at least for Stock, I am somewhat skeptical .

Rory, I agree with everything that you've said. They were "allowed" WITH a 10 HP penalty over the production head.
Somehow, the Mopar heads are being treated as if the aluminum head is a different combo from the OEM head with it's own HP factor. Not the +10 HP over the OEM head that NHRA originally assigned.

[SS734]

Originally Posted by Billy Nees

Rory, I agree with everything that you've said. They were "allowed" WITH a 10 HP penalty over the production head.
Somehow, the Mopar heads are being treated as if the aluminum head is a different combo from the OEM head with it's own HP factor. Not the +10 HP over the OEM head that NHRA originally assigned.

Its like that for all the aftermarket heads! All have been treated as a separate combo.

Billy- What happens when the "aftermarket heads" get the HP hit? Does it effect the "stock head" HP Factor too?

[GTS340]

I think the 1970 Hemi Cuda got changed as well. I believe AA/SA is a no go now. How one of the fastest production cars can't run the top class is a bit off. It is hard to tell all the changes unless you own 20 different combinations. I thought a 70 340 Duster could run D/SA but I see the factor is a natural F/SA now. All the 71 Charger combinations became heavier.

Paul

[Frank Castros]

For Mopar racers I'm a bit surprised that 906 heads are hard to find, Larry world know as I'm sure he has quite a few of them, and I'm unaware of what head is being use on the Max Wedge cars but do know the 518 is fairly hard to come by.