A fwiw, regarding PSI springs. Watch the distance from coil bind, try to keep it under 0.100".
That's what PSI tech recommends regarding the coil bind distance with their springs.
Again, this was years ago.
Improper distance from coil bind at net valve lift may cause spring surge, which can greatly reduce the available spring load needed to close the valve.
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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
Last edited by Steve C.; 04-06-2024 at 03:08 PM.
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