Ours does not fit exactly for combinations asked for here but the 526 we built for Johns's car made 928.9 hp at 7300 rpm with a BOP intake (920.4 w/ Victor), and this was 11-12 years ago. But to my point here for interest and regarding the comment about finding the right people. Our engine was done by a local engine builder here in town that on occasions does a few Pontiac's. A small but complete shop for all except crank work and align hone, he farms that out. And the High Port heads I bought as raw castings were ported by a fellow named Rick McConathy in Houston known for work on Chevy cylinder heads for Texas Pro Stock. He had never seen a set of HP heads before.
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'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 )
Old information here:
http://www.hotrod.com/articles/0712p...tiac-trans-am/
Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine)
Best time 5.13 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension
https://www.youtube.com/watch?v=qDoJnIP3HgE
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