Regarding the information on the pkelley website concerning the valve timing overlap ranges that are most likely to work correctly linked in post 82.
One might question if those numbers suggested by David Vizard are significant for his work typically on a small block Chevy application.
Another tid bit....
How Much Valvespring Coil-Bind Clearance Is Safe?
https://www.hotrod.com/articles/how-...rance-is-safe/
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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