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Click on image for the lowdown. 
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| | | Forums66 Topics128,109 Posts1,056,268 Members48,439 | | 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!
| | THANKS!
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: Oct 2010 Posts: 45 New Guy | | New Guy Joined: Oct 2010 Posts: 45 | What year did GM go to the dowel pin type lock on the lower half of the main bearings? | | |
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