Okay I think I have this figured out. I have a 283 SB that I just Tore Down for the first time. The pistons have a 060 stamped on the top of them, so i'm assuming that means the cylinders are bored .060 over. If that is correct its not a 283 but a 292, with a 3.935" Bore and a 3.00" stroke. I'm looking at a re-ring kit from Summit Racing and they want to know bore size, rod bearing undersize and main bearing undersize. I know the bore is .060 over but how do i figure out the other two? One more thing, the heads i have are casting # 3795896 1963-65, 60cc chamber cast iron heads. I've heard something about soft valve seats, how do I know if mine are soft? Are soft valve seats bad? Can I freshen up my heads or do I have to take them to a shop, what is involved with a head re-build? Thanks,
mike