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| | | Forums66 Topics128,012 Posts1,055,317 Members48,419 | | 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!
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Jun 2002 Posts: 53 'Bolter | | 'Bolter Joined: Jun 2002 Posts: 53 | Well I finally tried to look up my engine numbers in my book. I seem to be failing miserably. THe block numbers are as follows: '51 3100 - LAQ500403, or LAO500403 '53 6400 - S0627A
BY my book, I think the 51 prefix may be a LAG, which would be a '53 216.
THe '53 must be one of the later 235, 230, or 292's, probably '57 to '64 vintage. But I can't find the prefix in my book.
Can anybody offer any guidance? :confused:
53 Dumpy
1951 Chevy 3100 "Ernestine" 1970 Chevrolet C10 "Ol' Blue" 1940 JD "long-hood" B 1959 Jeep FC-170 1960 IH B275 2013 Chevy Silverado 2023 GMC Denali 2500HD
| | | | | Joined: Aug 2003 Posts: 65 Shop Shark | | Shop Shark Joined: Aug 2003 Posts: 65 | I think you're right about the 216 being a 53 version.
The number on the 6400 is one of the later engine numbers that were production number and I don't have any listings.
1953 and prior years used the engine numbers for titling purposes, not the VIN. We used to have some real interesting times when we changed engines. In Colorado, we had to get a state assigned number that looked like COLO1234 and then change the title to show the new number. Trying to put in a used engine required removing the old number and getting a new number. You had interesting times when you tried to sell the vehicle, because people thought the truck was rebuilt.
Starting in 1954, the states went to a VIN and the problems with engine numbers went away. After a while, the manufacturers quit using sequential numbers and began to use the production codes like you are showing. The S designated the producing plant for the engine, 0627 meant it was built on June 27 and the A tells what the engine was.
I'll lok tomorrow at some books I have at work to see if I can find anything.
You may have gotten more than you needed here, if so, I'm sorry. Brings back old memories.
Steve Ley
51 Chevrolet Canopy Express 02 K25 Duramax Crew Cab
| | | | | | Anonymous Unregistered | | Anonymous Unregistered | Dump, if you can post the series of #'s & letters cast into the block behind the starter we can tellya what month day & year the block was cast. This series will begin with " CONV.... " & is probably buried under years of grime. | | |
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