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Re: GM timing marks
Posted to Technical Discussion Forum on 1/20/2010 2 Replies

Richard. I can't get one dead on TDC, but I get it pretty close by inserting something like a Ford oil pump drive rod or a push rod into the plug hole, (a little over an inch), then hold up on it while someone turns the engine by hand. It'll pull the rod downw... Login to read more.

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