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Click on image for the lowdown. 
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| | | Forums66 Topics128,036 Posts1,055,461 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!
| | 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: Sep 2009 Posts: 5,778 Gearhead, Stovebolt Tech and Parts Tracker, Mod for Swap Meet and GTT | | Gearhead, Stovebolt Tech and Parts Tracker, Mod for Swap Meet and GTT Joined: Sep 2009 Posts: 5,778 | The "inliners" link provided by Gord above indicates that casting number used for 1948-49 for Chevy 216s. The pictured serial number sequence does not match the ranges listed (FA for '48 and GA for '49).
Serial number could be something by previous owner(s) as engine not original to your GMC. Anybodies guess how it came about.
At least you now have the basic engine ID info to help when needing parts or reference information.
Have good rest of your weekend!
Dan
~ Dan 1951 Chevy 3 window 3100Follow this story in the DITY Gallery"My Grandpa Carl's Truck and How it Became Mine"1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)
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