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High Volume Oil Pump

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Old 09-23-2005, 06:48 AM
JimNolan JimNolan is offline
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High Volume Oil Pump

Guys,
Hate to be a pest. But I've got another concern.
A friend that builds chevy engines just told me that when I installed the Melling High Volume oil pump, I should have enlarged the oil return holes in the heads. He claims it's a must for chevys and I'll end up pulling all the oil from the pan on cold mornings.
Has anyone used this oil pump and have you had problems as my friend mentioned.
Jim
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Old 09-23-2005, 06:59 AM
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RapidRuss RapidRuss is offline
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I run a Melling HV57 on my 70/390 and as long as your not spnning the hell out of the motor for long periods of time? you'll be just fine !

the block that in my truck now has No oil mads done to it..C$ heads without any restrictors..and has been just fine !! The next Engine will be another Story tho it will see 6100-6200rpm.. and will have the mods done..

JMO!!

Russ
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Old 09-23-2005, 08:42 AM
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If you're worried, put the oil restrictors in the heads.
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Old 09-23-2005, 12:42 PM
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Freightrain Freightrain is offline
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Hog wash............... That is what the relief valve in the pump is for. It's "trying" to put more volume into motor, but without any mods done to block, it's going to just bypass it back to pan.

If you have not opened up the block galleys then you will not be flooding the heads any worse then the stock pump.

If you want, just take off the rocker assy's, drop a #66 Holley jet into oil hole and re-install rockers. Now, you've restricted the oil to rockers.

Last edited by Freightrain; 09-23-2005 at 12:45 PM.
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Old 09-23-2005, 01:09 PM
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#66? Last I heard, it was a #90!
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Old 09-23-2005, 02:16 PM
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I just put #66's in my ol 352. That's ~.066 and it seems to be fine for the last week or so. Seeing that I don't turn it over 3000 rpm...I think I'll be fine.
Maybe if I it was a hot rod and liked to turn some rpm, I could put something a bit bigger, but they were handy.

I did notice that the oil consuption is down drastically from before this. I think it helped the lack of valve stem seals.
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