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Old 01-21-2011, 08:30 AM
Adam65 Adam65 is offline
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Since you have a 400, make sure that your oil pump driveshaft is the necked down one that is specific for a 400. (Due to the 2.65 mains, compared to the 2.45 mains on all other small block chevy's). A 400 driveshaft will work in any sbc, but if you use a non-400 driveshaft in a 400, it will rub where it goes through the hole in the main cap & block.
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