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Old 07-16-2011, 07:45 PM
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Help changing oil pump 74 nova

Hey, i'm going to change the oil pump out on my '74 nova but am having issues getting the pan off. Is there some trick to it? I was thinking about lifting the engine up a bit to clear the crossmember?

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Old 07-16-2011, 08:05 PM
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Without lifting the engine, you wont get it to clear the crank throws. Myself, I would pull the engine to make it easier to verify pump pick-up to pan clearance...pretty critical.
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Old 07-16-2011, 08:22 PM
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In most cases we`ve had to lift the engine when removing the oil pan.
I`m curious, Why`s the oil pump need replaced?
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Old 07-16-2011, 09:47 PM
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low to no pressure at idle. its just one of the potential causes. but i'm also putting in a high volume.
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Old 07-16-2011, 10:18 PM
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I ask since in most cases of low oil pressure, it`s not due to the pump, it`s due to excessive bearing clearances on high mileage engines. when this occurs installing a high volume pump is only a crutch and it`ll cause the oil pressure to come up slightly, but the engine will drop 10 horses or better driving the high volume pump. If in your case the engine has high miles and excessive clearances you may as well rebuild it before it self distructs.
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Old 07-16-2011, 11:10 PM
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ya i know its only a crutch. just like using a heavier weight oil right? but i only need it to last a few more months. i already have another engine for it just need to swap them out.

also, this only started happening after my last oil change where i switched to full synthetic oil that was a lighter weight.
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Old 07-17-2011, 02:44 AM
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P.S. I got that B***h out!! I like my other chevy's oil pan much better...
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