LS swap fuel pump - JeepForum.com
 
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post #1 of 10 Old 09-25-2017, 03:01 PM Thread Starter
Jeepoholic4L
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1992 YJ Wrangler 
 
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LS swap fuel pump

Hey guys new here I hope I'm posting in the right area.
I got my LS swap finished up a couple months ago in my YJ, I was using an inline fuel pump and an RCI fuel cell. The bladder tor on my cell and I'am now going with a Motobilt fuel cell with a TJ in tank fuel pump set up. I know the 97-04s run at around 49 psi and the 05/06 are 58psi, how ever I cant find any where what the flow rate is. My thought was to use the 05/06 pump and add a return to it. What are you LS TJ guys running for pumps? Also my motor is 1999 4.8L retun style system, and I'm running an LS2 cam with about 390hp.


YJ 4.8L LS 4L60E 35" MTRs 6" stretch
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post #2 of 10 Old 09-25-2017, 03:38 PM
glook
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I used a m10030 acdelco fuel pump module. Slightly modified it to fit my 2002 TJ fuel tank.
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2002 TJ 5.3L
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post #3 of 10 Old 09-25-2017, 03:44 PM Thread Starter
Jeepoholic4L
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What did you have to modify? Did you have to shorten the over all length of it?

YJ 4.8L LS 4L60E 35" MTRs 6" stretch
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post #4 of 10 Old 09-25-2017, 03:59 PM
glook
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I shortened it about 1", removed and plugged the rollover valve/vent and added a ring around the steel top part.
Here's my writeup. Its in russian but using google translate you can get the basic idea
https://translate.google.com/transla...-text=&act=url

2002 TJ 5.3L
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post #5 of 10 Old 09-25-2017, 08:48 PM
Jeffs98tj
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I installed a '03 6.0 with mild cam in our '97 TJ. I went with the '05 - '06 TJ fuel pump (RockAuto), converted the 6.0 fuel rail to a return-less rail ('05 GM 2500 - salvage yard) and GenRight tank. The '05 - '06 TJ pump is to be used with a return-less fuel system. Fuel system works excellent. I'd assume this would work with the 4.8 but I don't know anyone has done a 4.8 conversion. Sorry I can't help with the flow rating on the '05 - '06 fuel pump.
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post #6 of 10 Old 09-26-2017, 02:26 AM
Jonny Jeep
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I don't know about late model pumps but this is from the pump test in the 98 FSM... "A good fuel pump will deliver at least 1/4 liter of fuel in 7 seconds."
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post #7 of 10 Old 09-26-2017, 10:07 AM
JEK3
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Looking at the specs on replacement pumps on Rockauto, most 05-06 pumps will do 60-65 GPH free-flow, although one (Delphi) is listed as 23 GPH.

The 05 FSM does not give a flow rate.
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post #8 of 10 Old 09-26-2017, 11:49 AM
Jerry Bransford
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Quote:
Originally Posted by Jonny Jeep View Post
I don't know about late model pumps but this is from the pump test in the 98 FSM... "A good fuel pump will deliver at least 1/4 liter of fuel in 7 seconds."
That's roughly 34 GPH.

When you have a choice, buy American made.
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post #9 of 10 Old 09-27-2017, 07:55 AM Thread Starter
Jeepoholic4L
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I'm going to try and finess the GM pump into my tank. I appretiate all the input guys I'll let you know how it turns out later in the week. I'm still waiting for the new cell to show up.

YJ 4.8L LS 4L60E 35" MTRs 6" stretch
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post #10 of 10 Old 09-28-2017, 06:41 AM
Ben
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Please post your results. I need to change my setup, the tank cracked and I'm still not convinced I ever used the right pump (an inline walbro).


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