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so i have a blown head gasket thinking of replacing the gaskets and taking the heads to get rebuilt soon. i was thinking maybe to install a cam and all. what should i have them do to the heads to maybe get some HP gain? and also would u guys recomend pistons maybe? since im gooing to be taking it apart. i have a 2004 silverado 1500.. thnx
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Some vehicles may experience a gradual coolant loss over time. A very low percentage of cylinder head(s) manufactured with an embossed Castech logo may develop a porosity crack in a very specific area.
Inspect the cylinder head assembly to determine if the casting was manufactured by Castech. This can be accomplished by inspecting for their casting logo located on top of the intake port, under the rocker arm support rail and in the spring deck cavity portion of the cylinder head.
Important: If the cylinder head(s) are Not a Castech casting, follow normal diagnostic procedures in SI to determine the cause of the coolant loss.
Refer to the following illustrations on how to identify Castech casting and/or the very specific areas of the cylinder head(s) for a coolant leak from porosity.