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Re: GM 3.4L V6 Rocker Arm Bolt Pulled Out Cyl Head
Posted to Technical Discussion Forum on 11/24/2008

3.4L uses an 8mm bolt, and older 3.1L uses a 10mm bolt. One time in a pinch we drilled and tapped to 10mm and put a used 3.1L rocker on. Login to read more.