Jumping in here with a similar issue. I’m trying to correct the registration on my truck (Tried posting on oldgmctrucks.com but this forum seems more active.)

“Jimmy” had a “bonded title” when I bought it in 1998 and had been registered as a 1952 in error. The original VIN plate had been removed.

Since then I’ve learned it’s a 1951 (wing Windows with lever style door handles) and recently got a 1951 tagged Washington License plate which I’ve registered.

I have verified it has a 1954 Chevy Passenger Car motor and a 1956 head based on the numbers. (Original distributor in that motor was traded in as a core when I bought a new one from Napa.)

I am trying to get documentation to show the Washington State Patrol it’s actually a 1951 when I go there for a “VIN Verification” in August so I tried finding a chassis number as described in this document http://www.oldgmctrucks.com/page0013.html

But no numbers on the frame in that location on the right side above the spring (that I could find).

Asking for any suggestions on where I might find some useful numbers...


1951 GMC with positive ground. Engine is a ‘54 Chevy passenger car (Serial Number 0024472F54Z) with a ‘56 head (casting code on top of head 3836848 GM 4), Casting Code (on passenger side on side of head B56 848 850)