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Click on image for the lowdown. 
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| | | Forums66 Topics128,042 Posts1,055,519 Members48,424 | | 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: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | the 370... 383... are casting numbers, not the numbers on the pad, but numbers cast into the side of the block itself [and the head] - the 0021... is the number of that particular complete engine
Bill | | |
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