Hey guys, just wanted to know what yall thought about my engine choice: I dont have much experience with olds motors... I currently have an olds 455 in my 52. I just bought a 425 at a swap meet with tranny for cheap (thought it was a 455). The only reason I bought it was for the intake (offenhauser). Should I rebuild the 425 and for when the 455 dies (could be soon). Or sell it and use the money to rebuild the 455. 455 Is a 1972 with smog heads 425 is a 1965 with better heads seems to be in pretty good shape.