Melling HV oil pump with stock oil pan (small block)
#267964
03/27/09 07:00 AM
03/27/09 07:00 AM
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Joined: Feb 2006
Posts: 354
Stoney Creek, Ontario, Canada
76Beeper
OP
enthusiast
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OP
enthusiast
Joined: Feb 2006
Posts: 354
Stoney Creek, Ontario, Canada
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Is anyone running this combination in thier car? I've heard that you cannot use the M72HV pump with a stock oil pan as it will suck the pan dry. Also I was told not to use a windage tray with that setup as well. I want to use this setup for my 360 motor. Your thoughts and opinions on this please.. 
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Re: Melling HV oil pump with stock oil pan (small block)
[Re: 76Beeper]
#267966
03/27/09 07:20 AM
03/27/09 07:20 AM
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Joined: Apr 2003
Posts: 821
On the open road
Hrtbkr
super stock
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super stock
Joined: Apr 2003
Posts: 821
On the open road
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I found out the hard way that if you rev your 340 too hard with a HV pump it will suck all the oil out of your pan.  I paid a visit to the engine builder (Dan Smith) the next day... He installed a standard volume pump along during the rebuild, added a custom windage tray and things have been good for 60K miles. 
Last edited by Hrtbkr; 03/27/09 11:20 AM.
While outside on the turnpike
They got this new hit tune
Where thrills become as cheap as gas
And gas as cheap as thrills
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Re: Melling HV oil pump with stock oil pan (small block)
[Re: 76Beeper]
#267967
03/27/09 07:57 AM
03/27/09 07:57 AM
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Joined: Oct 2003
Posts: 7,506
Az
Crizila
master
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master
Joined: Oct 2003
Posts: 7,506
Az
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I ran one with a stock pan and tray for a while and never had a problem ( 6 qt pan w/filter ). Going through the lights I always had oil pressure. The only problem I did incounter was pump to pan clearance. I had to cut off the corner of the pan ( area where the pump sits ) and raise it up about 3/8" to clear the pump cover bolts. I have heard that this isn't the case with all stock pans though??
Fastest 300
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Re: Melling HV oil pump with stock oil pan (small block)
[Re: 76Beeper]
#267970
03/29/09 03:40 PM
03/29/09 03:40 PM
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Joined: Dec 2003
Posts: 5,314
Carstairs, Alberta, Canada
dave571
master
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master
Joined: Dec 2003
Posts: 5,314
Carstairs, Alberta, Canada
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Quote:
CJK440 - I think you are correct, I don't need the HV pump. The motor will be a fresh build.
I want to keep the stock pan & use a windage tray as well. I've already added a baffle in the stock pan.
Thanks for your thoughts everyone.........
Good call. 
It is a common misconception that an HV pump provides better oiling. It's purpose is to restore oil pressure, in an engine with excessive clearances. More oil flow to bring the pressure back up.
On a fresh motor, the clearances are tight,a nd a stnd volume pump will meet your oil needs.
Some racer guys even experiment with reducing oil flow.
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Re: Melling HV oil pump with stock oil pan (small block)
[Re: Rug_Trucker]
#267972
03/30/09 10:30 AM
03/30/09 10:30 AM
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Joined: Oct 2003
Posts: 7,506
Az
Crizila
master
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master
Joined: Oct 2003
Posts: 7,506
Az
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The pan I was referring to is a Hughes # 6105 - center sump, 7" deep. When I compared it to the stock pan on my 79 300 ( E58 motor ) they appear to be identical ). Could be a truck pan?? Don't know. If your engine clearances are correct, you shouldn't suck the pan dry, even with a high volume pump. Some times the big leaker on small blocks is in the rocker arm / shaft area (LA motor ) especially if you are using used stuff. Might be old school, but I perfer to sacrifice a few HP for the added security of a high volume pump. I don't carry any "spare bullets" in my trailer.
Fastest 300
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