My stock stroke 340 engine has a crack in 1 cylinder. I want to sleeve that cylinder and rebuild as a .040 over 500+ HP stroker but looking for advice first to see if It would be ok or if I would need an unsleeved block?
My stock stroke 340 is .040 over and runs great. Sonic check is the only way to know how thick the cylinder walls are. Personally I would run an old 340 block with a sleeve over a later year 360 block.
