Quote Originally Posted by BBC Mike View Post
Howdy folks great forum you have here, the Name is mike and I live in New Zealand. I have a 24 foot boat with a big block chev and a racing stern leg and am trying to id the block the casting number is 3963630 I cannot seem to find this number listed anywhere, any ideas?
numbers back of the block may tell you more and the year casted.front pad numbers may not be there if was in a boat to start with or was never in a car get a photo of it i can tell you more about your block just looking at it. i built machine sold many gm and after market blocks over 30 years