Agree with the comment above regarding valve springs.
Check new valve springs at their verified installed height with their intended retainer in place using a Rimac machine BEFORE they are installed.
NEVER trust the catalog specs !
Should you choose to go with a solid roller set up keep this in mind....
Inadequate oiling, excessive spring pressures and the hammering effect associated with VALVE LASH play a significant part in the failure of the roller, needle bearings and axle.
BUT very important, the lack of adequate valve spring pressure to control the valves is a potential KILLER.
.
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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
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