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440 Oil Pumps

Posted By: JohnnyBeGood

440 Oil Pumps - 11/03/09 04:38 PM

I am trying to decide which way to go with my 440 street build. Milodon or the ebay special blueprinted melling pump?
Posted By: an8sec70cuda

Re: 440 Oil Pumps - 11/03/09 05:50 PM

For normal street builds or mild street/strip setups, I just use a Melling HV oil pump. CHIP
Posted By: Commando1

Re: 440 Oil Pumps - 11/03/09 06:48 PM

The Melling HV is all you need. Don't forget it uses longer bolts.
Posted By: ccdave

Re: 440 Oil Pumps - 11/03/09 07:18 PM

I use a std. volume pump on my 440. You will find that most racers use the stock pump. The reason is the HV pumps more oil than the motor needs. HV pumps = HP loss, worn timing chains and oil blowing past the seals. I do port out and remove the as cast finish and radius the sharp turns on the internal passages on the stock pump to make it more efficent.
Posted By: DaytonaTurbo

Re: 440 Oil Pumps - 11/03/09 08:11 PM

For a full rebuild, a standard pump should do fine. I did a backyard hone'n're-ring so I went with a hv pump. The excess pressure is by passed right back to the pan, so I don't think it's a problem at all. But then I do also run a 7 quart pan/pickup. On a worn motor or one with fully grooved bearings, I'd say the HV is a good choice, on a fresh motor with regular bearings IMO the HV pump is unnecessary.
Posted By: CompSyn

Re: 440 Oil Pumps - 11/03/09 09:36 PM

Quote:

I use a std. volume pump on my 440. You will find that most racers use the stock pump. The reason is the HV pumps more oil than the motor needs. HV pumps = HP loss, worn timing chains and oil blowing past the seals. I do port out and remove the as cast finish and radius the sharp turns on the internal passages on the stock pump to make it more efficent.






The stock 383HP, 440HP and 426 Street Hemi all came with the same sized standard-volume oil pump rotors and all those engines were ran hard back in the day. As stated, the standard oil system is beefy enough for most applications.
Posted By: RapidRobert

Re: 440 Oil Pumps - 11/03/09 09:36 PM

A std vol pump. There have been a few reported failures of Melling HV pumps. Melling and Milodon are both good brands. What brand are the blueprinted ones on eGay? whichever one you go with clean it/check the 3 or 4 clearances that there is a spec for & ESPECIALLY make sure it turns freely & no binding & I would port it to up the flow & reduce the stress on the shaft/gears.
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