Piston ring gap
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Joined: Dec 2005
Posts: 64
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Piston ring gap
I have a 383 stroker in my 76 vette that has been using a little oil for awhile now. So... I decided to have the heads rebuilt (done) and while waiting for that I pulled all pistons to verify what the rings look like. I do not find any problems but the guy who rebuilt my heads recommended re-honing the cylinders and installing new rings. The engine is bored 060 over and I am trying to determine the correct ring gap. Any suggestions?
Melting Slicks
Joined: Dec 2001
Posts: 2,025
Likes: 1
From: Billings MT
I would follow the manufacture's specs, usually around .0004" per 1" of bore, so a 4.060 bore would require a ~.0016 ring gap. The .0004 is just an example, follow the ring manufacture's (or your builder's) recommendation.
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Tech Contributor
Joined: Aug 1999
Posts: 14,356
Likes: 6,328
From: At my Bar drinking and wrenching in Lafayette Colorado
Any set of rings you buy will have the manufacturer's end gap recommednation in the box. Follow the manufacturer's spec. They're all a little different, so you can't get a spec number by polling for suggestions.
