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427 GM Oil Pump - #3964255 vs GM Oil Pump - #3946023
GM literature lists oil pump c/w pick up - GM #3946023 used with 427 GM Deep Performance Oil Pan, 6 quart - GM #3879633. Other GM publications list oil pump c/w pick up - GM #3964255 used with 427 GM Deep Performance Oil Pan, 6 quart - GM #3879633
It is my understanding that oil pump - GM #3964255 came with the pick up that was not spot welded to the pump, allowing for optimum adjustment. Whereas the GM #3946023 came from GM already adjusted and tack welded. Can anyone confirm? Thanks! Last edited by 68 DANA; 12-30-2018 at 02:24 PM. |
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Btt
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#3
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I received clarification on the differences. It appears that GM #3964255 is the correct oil pump that I need to located for the GM Deep Oil Pan #3879633.
GMPARTSWIKI lists the following description for the associated part numbers. #3964255 Pump ASSY. (Oil) (Deep Oil pan Only) #3946023 Pass. 396, Pump ASSY Oil Thanks ! Last edited by 68 DANA; 01-15-2019 at 01:59 AM. Reason: Added Description |
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#6
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That is one sweet oil pump....very nice.
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