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Sammy · 02-14-2013, 05:37 PM

Throw away the gaskets. Get a tube of the black RTV. cleans both well no oil. Put the rtv about an 1/8 " bead all around be liberal. Let it set for 3 or 4 minutes each side and bolt it up. Some even put it on the bolts but doubt it is necessary unless they get loose on you. Also recommend you retorgue them after a short drive or in a week or so. Tryed the gasket thing and this works. Haven't seen it fail yet. Good luck

02-14-2013, 05:37 PM	#3
Sammy Registered User Join Date: Apr 2000 Location: Bonne Terre, Mo Posts: 3,005	Re: Cannot get header to seal!!! Throw away the gaskets. Get a tube of the black RTV. cleans both well no oil. Put the rtv about an 1/8 " bead all around be liberal. Let it set for 3 or 4 minutes each side and bolt it up. Some even put it on the bolts but doubt it is necessary unless they get loose on you. Also recommend you retorgue them after a short drive or in a week or so. Tryed the gasket thing and this works. Haven't seen it fail yet. Good luck __________________ '69 Chevy Long Fleet & '71 GMC Short Step & Project "ODD BALL" "You can wash a pig, soak it in most expensive perfume. In the end it is still just a pig." ODD BALL build thread http://67-72chevytrucks.com/vboard/s...d.php?t=478629"