The magic ingredient comes in the form of the Indian Adventures "Tall Deck" block
https://www.motortrend.com/features/...ontiac-engine/
I found this thread of particular interest. Many years ago, I think it was around 2002, my engine builder at the time had one of these tall deck blocks sitting in the corner of his shop.
A local fellow here in the Austin area bought it from Dick Duclow and had it dropped off at his shop.
Fast forward... now today I have no clue whatever was done with that particular block.
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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)
5.14 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension
https://www.youtube.com/watch?v=qDoJnIP3HgE