Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - SBC 400 Rear main Vs Rear Oil Pan Seal
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Old 02-12-2010, 07:37 AM
Koolaid Koolaid is offline
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Could be either - if your bellhousing has any type of inspection panel remove that, try to clean the best that you can between the flywheel and back of block and while running try to observe where the leak is coming from (always observe all safety precautions working under a car). You also have potential leak points above those two areas so rule them out as well.

I had one rear main last season that started leaking after 3 weeks of sitting idle - one good hot lap session and it sealed back up, surprised me.
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