Is it possible those studs in the lifter valley bottomed out into the cam bearings?
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'71 GTO, 406 CID, 60916, 1.65 HS, '69 #46 Heads 230CFM, 800CFM Q-jet, TH400, 12 Bolt 3.55
'72 Lemans, Lucerne Blue, WU2, T41, L78, M22, G80
Last edited by Holeshot71; 12-19-2023 at 07:57 AM.
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