It's probably a 235. Somebody may have swapped it in to replace a blown 228. My '53 GMC currently has a '49 216. It happens.

The front sheet metal, horn button and "General Motor" speaker cover suggest it's not a GMC "clone"

The heater vent louvers on the cowl side have been oddly modified.

Yep, the Chevys and GMCs are basically the same truck with a few differences. Engine, grill, front cross-member, negative ground, and a few other very small differences.

The gauges were a light brown in early years, but I believe they were changed to match Chevys in '51

Last edited by twotone; 03/11/2019 3:16 PM.