Well, the truck was sort of assembled from different year parts, the frame and cab are original 49 but bed is 55 2nd and the differential is yet to be identified, since I'm still not working on it. So the engine could be anything. The truck is in Guatemala and I'm pretty sure it was originally sold here. American car dealers here historically have never been good (neither japanese cars for that matter), in having spare parts, much less spare engines. I think the guy took a motor he found and put it in the truck. As far as the motor number the A looks crooked, the 228 sort of good and the rest, well, like a doctor's prescription. I'm really not counting on it being the original. Basically the question is if the block forging number is enough to determine the CID of the motor, or like Crenwelge said, I'll need to pop it open to be completely sure. The head stamping are: a 55 on the left and a CFP next to it, then a 117 on the center and the 2194819 on the right with a AF below it. I've read that somo 228's and 248's share the 2194819 head, so, correct me if I'm wrong, I think this will not help determining the CID. By the way, above th 2324002 block stamping, it has GMC-7.
