Originally Posted by Tod74
what are the issues with the GM 502 block? I'm sure they are fine for a certain amount of cubes/power...what are there limits?
Todd my last motor was a a 548 in a 502 block. It made 858hp and was a good motor, but the blocks are to thin. Hard to keep cool and not a very sturdy bottom end. They're not a bad low budget build motor, but you cant sell them for much. I was told by several engine builders no more than 950hp on those blocks. I had over 20k in my motor and could only get $6,500 when I sold it.(It was only 1 year old with less than 100 passes. If I could do it again I would rebuild the same motor with a Dart block and could have sold it for a lot more.