I would presume the Crower solid roller lifters on hand have the optional High Pressure Pin Oiling (HIPPO). If not my recommendation would be to have them upgraded for this .024" hole that leads from the oil band to the needle bearings. It delivers more oil to critical, high load areas for greatly improved cycle life. Also Crower is now doing it to both sides of the axle as an option.
To aid in the discussion of adequate spring pressure look into and report the actual verified installed height on the specific cylinder heads involved.
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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.; 06-13-2021 at 12:57 PM.
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