Maybe something like this would work under the head bolt washer?
https://www.mcmaster.com/products/se...s-and-washers/
There are other styles also, in metric etc.
https://www.mcmaster.com/products/sealing-washers/
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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; 06-11-2023 at 07:39 AM.
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