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There are no timing marks on the water pump.the only timing marks are on the crankshaft and camshaft gears.And if you're working on a quad-four engine as I suspect you are,you will need to line up the holes in the cam sprockets with the holes in the block and insert pins to hold them in place.The correct size drill bits will work good for this if you don't have the special GM tool.

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19y ago

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