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This is the standard rocker arm for the LS engine family with the exception of the LS7, LS3, L76 and L92 engines. The LS3, L92, and L76 cylinder head designs use this rocker for the exhaust valve only! A different rocker arm is required with an additional offset to fit the intake valve is required for the LS3, L92, and L76. For the intake rocker arm on LS3, L92, and L76 see part number - #12569167.