Thread: Opinions wanted, to swap 305 out or not
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Old 08-10-2010, 01:58 PM   #23
Slonaker
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Join Date: Oct 2002
Location: San Antonio, TX
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Re: Opinions wanted, to swap 305 out or not
Quote:
Originally Posted by jrcaprai View Post
87 is when GM started to use the one piece Main seal
One piece rear main started in 1986. Center bolt valve covers started in 1987.

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