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Old 04-12-2016, 10:37 AM   #1
T and S
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What the ?*@#

... so I get ready to bolt on my water pump pulley / spacer / fan on my 250. Can't get bolts to start, so end up pulling radiator back out. Found holes on water pump snout drilled wrong, all holes 1/2 hole off ! Oh happy days ! Going to re drill and continue on I guess ...
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Old 04-12-2016, 11:34 AM   #2
chevy_mike
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Re: What the ?*@#

GM has used 2 different bolt diameter patterns, that I have seen. Some water pumps have both patterns and others don't. I know on my Nova wagon, when I replaced the water pump, it had the correct holes for the factory pulley and fan. If you have a parts store local, you might see if they have a different pump that has the right pattern.
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