Quote:
Originally Posted by Qwikpony
The older cars are at least getting that benefit as well. Its called Edelbrock Aluminum Heads (NHRA legal/approved).
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It's a minimum 10HP penalty for the Edelbrock/GM head on a big block Chevy in Stock Eliminator. And as an example, the fastest 427/425 69 Camaros in the country, owned by the Sorenson Brothers, and Bobby DeArmond, have iron heads. I'm not at all convinced that the Edelbrock/GM head has done anything for the 427/425 we run. If we go back to the 427/425, it will probably have a set of Jimmy Bridges cast iron heads on it. That head seems to work for the 396/375 though.