i have oil in my radiator. where can it be coming from. 427 ci chevy

Question

chevy 427 ci had oil in radiator had heads redone and surfaced replaced with new head gaskets still having same problem. radiator has the 2 trans cooling lines only no oil cooling lines need some help

Answer 1

As with the SBC, there's no oil passages running up through the heads. All oil which flows to the top end is through the pushrods. There are flow passages back down, but there's basically no pressure there. IOW: a cracked head would not cause your problem. I've been beating my head for the past while trying to remember where an oil leak could cause it to go into the water ... the only place it could be coming from is from the block ... one of the oil galleys into a water jacket. That's a guess though. You'd have to tear down the block and get it pressure tested.