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Click on image for the lowdown. 
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| | | Forums66 Topics128,077 Posts1,056,280 Members48,441 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Nov 2006 Posts: 2,544 Shop Shark | | Shop Shark Joined: Nov 2006 Posts: 2,544 | In 1987 the 350's changed to a one piece rear main seal. The crankshaft is different and uses a different flywheel and balancer. Do you know what rear seal type your motor uses? | | |
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