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Post Info TOPIC: 327 rear main seal question


Canadian Poncho Superstar!

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327 rear main seal question


does the 327 small and large journal crank use the same rear main seal?



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Uber Guru

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Yes, as far as i know all SBC rear mains are the same until you get into the 1986 one piece versions



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Beaumontguru

MY BEAUMONT HAS 4 STUDDED TIRES AND 2 BLOCKHEATERS......AND LOTS OF OIL UNDERNEATH.  The other one has a longer roof.



Canadian Poncho Superstar!

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What brand is the best?



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Poncho Master!

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I have only used Fel Pro

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A Poncho Legend!

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Fel Pro, Victor or original GM for me. All have been fine.

The one issue I've had with a rear main seal leak was when the crank had a minor amount of wear on it where the rear seal contact area was.

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1966 Strato Chief 2 door, 427 4 speed, 44,000 original miles 



Uber Guru

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Ya the blue(sometimes grey) felpro is what i always use.   i offset the seal from the parting line about a 1/4 inch and be sure to seal the parting surfaces.



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Beaumontguru

MY BEAUMONT HAS 4 STUDDED TIRES AND 2 BLOCKHEATERS......AND LOTS OF OIL UNDERNEATH.  The other one has a longer roof.



Poncho Master!

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Yes beaumontguru is correct offset the seal and clean and seal the surfaces.

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Canadian Poncho Superstar!

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All good info, thanx guys



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Canadian Poncho Superstar!

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off topic but whos oil pump wound you use for a stock 283?



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Poncho Master!

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mellings high volume

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A Poncho Legend!

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70 SS ACADIAN wrote:

off topic but whos oil pump wound you use for a stock 283?


 I always use a stock pump, Melling brand. So far they've always been perfect.



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1966 Strato Chief 2 door, 427 4 speed, 44,000 original miles 

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