Can someone tell me how to tell what engine I have. I bought my 2nd 53 chevy 1/2 ton recently and the other block from my other truck was set up differently. I found out that the engine and transmission were used 55-59 or something so did they use the bigger engines for those years or what. My guess is that its a 235, but who knows. I am pretty sure that the other block I have is a 216. thanks