Quote Originally Posted by PolishMike View Post
It is a ZZ502 longblock direct from a Chevy dealer.
well if the block is not cracked then it is head gasket if or intake leaking there no water plugs in side of the engine to make it leak water in the oil less the block/heads has a spot were the casting is weak sounds like it is going to have to come apart make sure the intake is not bottom out on the block stoping the intake gaskets from sealing up