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Me personally Ive had 12-15 vehicles with 5.2/5.9 motors and as yet not had one have a prob with the heads.



I can personally guarantee you that at least one of, if not more than one, your 12-15 5.2/5.9 engines had a crack between exhaust seats It is a very well known problem when looking for a viable core. It's also something that you most likely won't notice on a used engine until you're looking for a set of OE heads that can magnaflux and not be cracked.



Never had one over heat, lose coolant without an external leak or coolant foul a spark plug BUT,I do believe I posted "I have a friend who works at a machine shop and sees this condition FREQUENTLY " maybe I'm just lucky

I get a few calls a week looking for cylinder heads but we recomend these customers either to the machine shop or buy EQ heads or similar.

If I were to buld one from scratch I would be getting a set of EQ heads and not bother with the stock heads for just that reason.

Last edited by 2734bbl; 02/26/12 01:54 PM.