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Click on image for the lowdown. 
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| | | Forums66 Topics128,055 Posts1,055,785 Members48,426 | | Most Online14,466 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!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: May 2004 Posts: 920 'Bolter | | 'Bolter Joined: May 2004 Posts: 920 | I'm about to install the headers and intake on my 261. Finally. I'm using felpro gaskets. Should I use gasket sealer? | | | | | Joined: Sep 2020 Posts: 40 'Bolter | | 'Bolter Joined: Sep 2020 Posts: 40 | Clean and dry before install is all you need. | | | | | Joined: Feb 2000 Posts: 5,203 'Bolter | | 'Bolter Joined: Feb 2000 Posts: 5,203 | I use a little high heat sealer on exhaust ports and very small amount on the intake ports. The smoother the surfaces are, the less you need. | | | | | Joined: Aug 2001 Posts: 1,299 'Bolter | | 'Bolter Joined: Aug 2001 Posts: 1,299 | I am a believer in a skim coat on both sides of gasket when installing headers of a high heat silicone sealer. Exhaust gaskets will exploit the smallest leaking area and make it bigger over time. Seal the gasket fibers and it will prevent the later leaks. | | |
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