I believe "GMC" pickups in Canada actually used Chevrolet engines. In 1951, that would most likely have been a 216 cubic inch engine with spray oiling of the connecting rods and Babbit-lined rods. American GMC trucks of the same year would have been made with 228 or 248 cubic inch engines with replaceable rod bearings. If there's a roughly triangular shaped sheet metal part near the oil pan rail on the driver's side, you've got a spray-oiler 216 or 235 Chevy engine.
Jerry

Last edited by Peggy M; 09/16/2023 4:51 PM.
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