Thread: 502 Help - Water in Oil Filter

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Originally Posted by pat mccarthy

wrong head gaskets or wrong heads this enging came from a dealer built ? or a put together build ? you can not used older BBC heads or the older mark 4 head gaskets or they will leak

It is a ZZ502 longblock direct from a Chevy dealer.

Originally Posted by PolishMike

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