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Labor Day Putting down your wrenches or time for
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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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#1426 08/27/2002 10:46 PM | Joined: Dec 2000 Posts: 54 Wrench Fetcher | | Wrench Fetcher Joined: Dec 2000 Posts: 54 | Should you put some kindof sealant on the head bolts on a SBC? Thanks! | | | | | Joined: Sep 2000 Posts: 67 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2000 Posts: 67 | Yes, I think it is the two outermost front and back ones that need to have sealant, but it won't hurt to put it on all of them. I bought a jar of Permatex thread sealant with teflon when I did my heads and it worked great.
Aaron | | | | | Joined: Oct 2001 Posts: 54 Shop Shark | | Shop Shark Joined: Oct 2001 Posts: 54 | yup, all the head bolts need a thread sealant. been using a permatex aviation gasket sealer for years.
Yes, officer it's licensed.
| | | | | Joined: Dec 2001 Posts: 1,745 Member | | Member Joined: Dec 2001 Posts: 1,745 | Ok, I heard and did that recently. But, I couldn't help but wonder what the purpose is?
Secondly, on some engines one headbolt is machined to allow oil flow? Wouldn't a bunch of thread sealer leak down there?
54 3100 with 235
62 flatbed dump C60 with 261
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