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Old 03-01-2019, 08:53 PM
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geeteeohguy geeteeohguy is offline
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Join Date: Dec 2009
Location: Fresno, California
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Quote:
Originally Posted by supersport#69 View Post
Well I’m hoping it’s just valv e covers but I’m not that lucky. If it’s not too bad I may leave it alone for a bit but I really hate leaks. What material do you recommend for the rear seal?
Tony, I've used the BOP 2 piece Viton rear mains on several engines. No leaks from any of them...not a drop, and many years and thousands of miles have passed. We put a Viton BOP one-piece in Will's '69 (they weren't yet available when I did my engines) and it is working fine as well. To do it right, you need to pull the engine. It is not a time saver to try to do the job 'in car' with a Pontiac. BTDT, and it doesn't pay. It takes longer, and you end up with a marginal job and crap in your eyes and all over. My advice, knowing your car, would be to pull the engine, replace the rear main seal, replace all the gaskets (except the head gaskets), replace the core plugs, replace the timing gear set, and while the engine is out, you can spruce up the engine bay. When it all goes back together, you will have a low mile, spotless, reliable HO powered GTO. Your car definitely rates this!

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