are 3.8 L. heads interchangable with 4.3 L. heads? - GM Forum - Buick, Cadillac, Olds, GMC & Pontiac chat

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are 3.8 L. heads interchangable with 4.3 L. heads?

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Old 06-21-2010, 05:16 PM
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Default are 3.8 L. heads interchangable with 4.3 L. heads?

My 95 Chevy 4.3 L.pickup blew a head gasket between two cylinders, and my mechanic says the head is probably warped. I also have an old 3.8 L. Oldsmobile. Are the heads interchangable, or at worst, are the engines interchangable?
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Old 06-21-2010, 06:32 PM
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No, not to my knowledge. The only heads that will interchange with old 3.8l heads are 3300'* IIRC.
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