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Mod | | | Forums66 Topics128,024 Posts1,055,395 Members48,422 | | 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!
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#53874 12/23/2005 1:26 PM | Joined: Sep 2003 Posts: 343 Member | | Member Joined: Sep 2003 Posts: 343 | Red58, Is there a link to a page that shows the transmission number codes and how to decipher the date codes? I am trying to determine the year of my non-original SM420, which is in my 54 GMC 100. Thanks.
1954 GMC 1/2-ton Longbed
1971 Pontiac LeMans Sport
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