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04-05-2019, 07:31 AM
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#21
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Name: Red Sleeper
Title: Too Much Time
Status: Not Here
Join Date: Aug 2009
Location: Lone Star State
Member`s Gallery
Posts: 4,595
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Buy the stud kit from Larry B. It’s the only way to go when fighting the tougher spring on install.
__________________
Nick J
'14 Silverado LTZ 5.3 4wd
'05 Cummins QCSB 4wd 48re
'91 Cummins w350 5spd
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04-05-2019, 05:43 PM
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#22
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Name: SCHMITTY
Title: Not enough time
Status: Not Here
Join Date: Jun 2012
Location: K beach, AK
Member`s Gallery
Posts: 1,183
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Quote:
Originally Posted by chad256
I have a 180 pump, but I have gone 10.50 at 132 with a stock lift pump fed by a cheap electric pusher pump. Made 840 on the dyno. Been planning on upgrading the fuel system but just been pushing it off since it seems to be working alright.
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What does the pressure look like when doing a wide open run ?
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stock 94
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04-05-2019, 05:47 PM
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#23
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Name: SCHMITTY
Title: Not enough time
Status: Not Here
Join Date: Jun 2012
Location: K beach, AK
Member`s Gallery
Posts: 1,183
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I ran an eBay 140 gph on a relay feeding a stock lift pumps for a few years, than I got a new pump from the Cummins dealer and swapped a comp cam #375 spring iirc and left the screen out of the pump. I didn’t notice much of a difference until I removed the pusher pump. With the comp cam spring the pusher became a restriction. My precision industries billet input lasted less than a week after I removed the pusher. My fuel pressure can still get pulled down but it takes a little longer. Throttle response seemed better also.
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stock 94
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04-13-2019, 05:56 AM
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#24
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Name: Drothgeb
Title: Almost Fast-N-Loud
Status: Not Here
Join Date: Sep 2010
Location: Maryland
Member`s Gallery
Posts: 820
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I hit 10.91 with a racked 160hp pump fed by an electric pump @ 60-70psi. Hp was mid 700s.
__________________
95 RCLB 4WD
10.66 sec, 128.93mph
I'm not a Cummins expert, but I did sleep at Holiday Inn Express
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04-13-2019, 10:45 AM
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#25
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Name: SCHMITTY
Title: Not enough time
Status: Not Here
Join Date: Jun 2012
Location: K beach, AK
Member`s Gallery
Posts: 1,183
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Did you use a larger fuel line from the tank ?
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stock 94
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04-13-2019, 03:53 PM
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#26
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Name: 79powerwagon
Title: Too Much Time
Status: Not Here
Join Date: Jul 2017
Location: MN
Member`s Gallery
Posts: 328
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FWIW, I just changed over from 3/8” lines to a 5/8” suction from sump, ported fittings, 1/2” dual feed and saw nearly 10psi gain at all RPM. Stock piston pump.
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1979 Dodge Warlock W150 Ppump 12v/518
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04-14-2019, 09:12 PM
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#27
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Name: JQmile
Title: Comp Diesel Sponsor
Status: Not Here
Join Date: Nov 2006
Member`s Gallery
Posts: 6,976
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Quote:
Originally Posted by Drothgeb
I hit 10.91 with a racked 160hp pump fed by an electric pump @ 60-70psi. Hp was mid 700s.
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What did your truck weigh? And what did you figure you were at when you ran 10.91?
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89 Dodge 972rwhp on the hose, still a VE!
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04-16-2019, 12:28 PM
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#28
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Name: SCHMITTY
Title: Not enough time
Status: Not Here
Join Date: Jun 2012
Location: K beach, AK
Member`s Gallery
Posts: 1,183
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I’m going to try a belt driven lift pump from PDD
__________________
stock 94
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04-16-2019, 01:17 PM
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#29
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Name: chad256
Title: Lurkin
Status: Not Here
Join Date: Oct 2011
Location: Oroville, CA
Member`s Gallery
Posts: 103
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Quote:
Originally Posted by SCHMITTY
I’m going to try a belt driven lift pump from PDD
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I was going to as well, was really looking forward to trying it. Just got tired of waiting since they've been on backorder so long, so i went a different route. Hopefully they are available soon and we can see how they work.
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04-27-2019, 05:55 AM
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#30
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Name: Drothgeb
Title: Almost Fast-N-Loud
Status: Not Here
Join Date: Sep 2010
Location: Maryland
Member`s Gallery
Posts: 820
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Quote:
Originally Posted by JQmile
What did your truck weigh? And what did you figure you were at when you ran 10.91?
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Back then the truck weighed 5900.
__________________
95 RCLB 4WD
10.66 sec, 128.93mph
I'm not a Cummins expert, but I did sleep at Holiday Inn Express
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