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#1
11-09-2025, 10:21 PM
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Curious:
Are the runners the same volume? I've read several engine builders say the reserve the HP for larger cubic inches. |
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#2
11-09-2025, 11:30 PM
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It is my understanding the HP as cast port is 277cc's.
Also keep in mind the spring pressure with the larger 2.20 intake valve. Also the valve length is 6.200" and the installed height is around 2.000" This was my info obtained in 2005. I presume it is still similar. .
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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 Last edited by Steve C.; 11-09-2025 at 11:44 PM. |
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