- Jun 21, 2021
- Reaction score
- What vehicle(s) do you drive?
- 1951 mercury
I have a 1957 365 engine that I'm rebuilding, I got it off a neighbor who knew nothing about it, just wanted it gone. After tearing it down I've come to find out that at some point it dropped both valves on cylinder 3 and broke the no. 3 rod in two places. I'm currently have the block machined. My question is concerning the valvetrain on these engines. I've found out that there is two different push rod lengths (early/late production motors). During tear down it appears I have a early motor with late (shorter) push rods. Does anyone know if there are any other differences in the valve train? Lifters, Rocker Arms differences between early/late motor? I'm at a standstill on ordering motor parts until I figure out the valve train. We all know that the parts for these motors are expensive and i just don't want to ruin it by doing something stupid. Any info on valve train would be greatly appreciated.