hey NastyZ28 members
I have a book how to rebuild sbcs and it says I can refresh my oil pump.(save me a few bucks) Since my engine is factory doesnt seem to be a problem. Its says to do a technique called "lapping". Anyone do this before? Seems easy enough but it doesnt specify which side to do it? The cover or the body? If any of you guys can help me out it would be great!!!
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[This message has been edited by pink81z (edited January 09, 2005).]

If the pump body and lid don't show appreciable wear, nor the gears or where the shaft goes through the body, then go ahead and reuse.
Personally, unless it was absolutely mint, for the 20 bucks I would replace it.

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It would be the cover side.

I thought you were supposed to check end clearance between the pump gears and the cover, then carefully adjust with fine grain sandpaper if the clearance is too much?
(use a board or something under the sandpaper to ensure the sanded face is completley flat)

The pump looks abosulty fine to me. I dont see why to send $ on a pump when I have a perfectly good one. 20 bucks? where have you been looking? The cheapest I have found was $30 and that doesnt include a pick-up.
I wanted to get this motor finished today

I know friends that chck all that stuff on thier pumps and machine them to exact specs
but for $20 id still start with a new one!

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14.22 on the brakes (I expect 13.90's soon)

$20-25 should get you a pump easily... as for the pickup the reason i think they dont give you one is becasue if you run a deep pan.. then the pickup is usless cause you need the correct pickup for the pan.... using the stock pan?? use the one off the old pump...

melling standard volume oil pump at autozone is M-55 $12.99

melling H/V pump is M-55HV and is $31.99

i've used the H/V from autozone no problems ran 60PSI constant

those are the ones they usually keep in stock.. goto autozone.com and lookup about any 70-85 SBC and will give you a list of pumps they have

A new pump is $15-20. If you re-use your old pump what will it cost you when it fails? Is it worth that much to you to have to pull the engine out, replace all the bearings, and put it back in?

Your "budget rebuild" price just went out the window if it fails. It's just not worth the hassle or the cost of having to pull the engine if you ask me.

I said this in another thread before.

The oil pump is the heart of the engine, and the oil is the life blodd of the engine.

Oil pumps are too cheap to reuse.

The prices 1981coupe400ci gave you is right.

In summit a melling std. vol is $16.88 and high vol is $24.95

They dont come with pick ups cause of the fact of all the diff oil pans on the market. You need a pick up that matchs your oil pan depth.

Pick ups for stock pans are $7 and under
Pick ups for deep pans are $15-40