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Rear Main Seal Recommendation

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Old Jan 17, 2008 | 09:33 AM
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Default Rear Main Seal Recommendation

Which rear main seal is recommended for a '73 stock 350. I know that it takes a 2 piece but there are 3 to choose from.

Single lip?
Offset lip?
Double lip?
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Old Jan 17, 2008 | 10:12 AM
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Single lip would be for a new crank, where there is no groove worn into the crank by the previous seal.

The offset lip would be for a used crank situation where there IS a groove and you don't want the lip of the new seal to ride int he same groove weakening it's sealing capabilities.

The double, though I have not used one, seems to me to be a combination of the two, and would be the best for sealing both old and new cranks.
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Old Jan 17, 2008 | 10:13 AM
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The GM version was installed in my 1979 L-82 about five years ago. It is still leak-free.

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Old Jan 17, 2008 | 10:29 AM
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I recommend using the Fel-Pro once piece pan gasket. There great!
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Old Jan 17, 2008 | 10:34 AM
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Default Rear Main

Durango, I used a double lip on a Jeep Wrangler motor and it worked great so what you say about being the best for new and used does make perfect sense. Thanks
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Old Jan 17, 2008 | 10:40 AM
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Originally Posted by Jud Chapin
I recommend using the Fel-Pro once piece pan gasket. There great!

So wonderful, and they even come with these really cool screw in studs that go up first, and the seal and pan clip up onto them and they hold it all in place while you start bolting the pan on. No more fighting with the gaskets as they fall off while you're trying to hold the pan with your knee and stomach.
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Old Jan 17, 2008 | 11:14 AM
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Originally Posted by Durango_boy
So wonderful, and they even come with these really cool screw in studs that go up first, and the seal and pan clip up onto them and they hold it all in place while you start bolting the pan on. No more fighting with the gaskets as they fall off while you're trying to hold the pan with your knee and stomach.

The best, IMO!
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Old Jan 17, 2008 | 08:01 PM
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Felpro vs OEM
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Old Jan 17, 2008 | 08:13 PM
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Double Lip With Rtv On Each End Is The Way To Go.
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