Good day. I'm a newby to this forum so please bear with me. I have a 1951 Chev Mapleleaf 1700 3 ton truck that I inherited from my Dad. He got it from his brother who bought it new and was about to lose it for non-payment in about 1952-53. Here's my problem. The original engine went out of the truck shortly after my dad got it and the replacement motor is a GMC motor, or at least that is what is on the valve cover.(two bolt holding it in place). Can anyone help me identify what size motor might be in this truck. I plan to do a little restoring on it this spring and that is my start point.

DAz