High volume oil pump ?
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High volume oil pump ?
I am prepping a used 390 to be installed into my F-250 and was planning on replacing the oil pump since the motor was out.
I call DSC Motorsports to get some pricing on stuff and Dennis suggested going high volume instead of stock replacement pump.
I thought I read something here that the High volume pump would put added wear to the stock distributor gear.
Dennis stated that He never had issues with this.
I tried to search the forum on this issue but had no decent luck.
I will probably order a high volume pump this afternoon if all sounds good.
Thanks for any help.
Ken
I call DSC Motorsports to get some pricing on stuff and Dennis suggested going high volume instead of stock replacement pump.
I thought I read something here that the High volume pump would put added wear to the stock distributor gear.
Dennis stated that He never had issues with this.
I tried to search the forum on this issue but had no decent luck.
I will probably order a high volume pump this afternoon if all sounds good.
Thanks for any help.
Ken
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From: Calgary
I've been running a hv for 6 years, and drag raced for 2. Never had any problems. There is 1 thing I think that it causes. Because of the poor drain back on 390 heads, the topend creates alot of splash, which causes oil to sometimes comes out the breather caps, or pcv. I'm just guessing though.
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If you install a HV oil pump you might want to restrict the oil coming up to the heads as the HV will pump it all up there and you will not have any in the pan. Its real easy to do with a set of Holley main jets under the oil bolt of your rocker shafts in the oil galley. They just push in and reinstall the rockers. I used a set of Holley .090's in mine.
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From: Long Island USA
Originally Posted by Jsbiohazard
If you install a HV oil pump you might want to restrict the oil coming up to the heads as the HV will pump it all up there and you will not have any in the pan. Its real easy to do with a set of Holley main jets under the oil bolt of your rocker shafts in the oil galley. They just push in and reinstall the rockers. I used a set of Holley .090's in mine.
I used a piece of pushrod from a SB Chevy (or was it a Ford 289?) for the restrictor, but the Holley jets are nicer...
art k.
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Originally Posted by gtex
I twisted an upgrade Milodon pump shaft...I reccomend ARP!
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So just to clear things up,
To restrict the flow, You just place a main jet in the hole before the bolt goes in?
is the diameter of the jet large enough that it won't flop around in there?
I do have a Holley jet kit so I'm sure that I still have a pair of 090s.
Thanks for all the help.
Ken
To restrict the flow, You just place a main jet in the hole before the bolt goes in?
is the diameter of the jet large enough that it won't flop around in there?
I do have a Holley jet kit so I'm sure that I still have a pair of 090s.
Thanks for all the help.
Ken
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From: Long Island USA
Originally Posted by woods
So just to clear things up,
To restrict the flow, You just place a main jet in the hole before the bolt goes in?
is the diameter of the jet large enough that it won't flop around in there?
I do have a Holley jet kit so I'm sure that I still have a pair of 090s.
Thanks for all the help.
Ken
To restrict the flow, You just place a main jet in the hole before the bolt goes in?
is the diameter of the jet large enough that it won't flop around in there?
I do have a Holley jet kit so I'm sure that I still have a pair of 090s.
Thanks for all the help.
Ken
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Posts: 168
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From: Omaha USA
Yes the holley jet will push in small end first and fits nicely. There is a turn in the galley right after that so the jet cannot slide down into the head. On the other end the bolt will not let it push out of the hole and it fits snug.
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