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Click on image for the lowdown. 
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| | | Forums66 Topics128,080 Posts1,055,946 Members48,430 | | 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: Aug 2005 Posts: 13 Junior Member | | Junior Member Joined: Aug 2005 Posts: 13 | Ok there are 3 or four sets of numbers /letters on passenger side of the engine one appears to be CM or GM not sure, is that it? | | |
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