I am working on a 1937 Dodge 1/2 ton pickup with a 218ci 6-cylinder. The engine number stamped on my block is: T38-8085. The engine spun the #2 rod bearing and cracked the crankshaft. I have located a crankshaft and set of rods out of a 1953 Dodge B4B with a 218 ci engine, and I am hoping to use this crank as a replacement. The B4B engine is stamped with T306*I57323*. Unfortunately, I do not have the crankshaft casting numbers readily available. My question is, are these crankshafts interchangeable? Or can this only be determined from the crankshaft casting numbers?