fuel pump question for 88 model 5.3 ls swap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Bulldog88 · 01-26-2016, 03:20 PM

I'm about to do a 5.3 swap on a 88 Chevy Truck but I would like to keep the fuel pump in the tank if possible, has anyone ever done this if so what fuel pump is it that you used, part # or any suggestions would help, I don't think the tbi fuel pump will put out the pressure required for ls

Wasted Income · 01-26-2016, 03:24 PM

I've done it. You just need to swap the in-tank TBI pump with a pump from an LS truck. It should drop right into the old hanger assembly.

A stock TBI pump won't work. They only run about 12 psi, and you need 58 with an LS

68c10airstream · 01-26-2016, 07:19 PM

Wasted income is spot on. Your 88 is a return system that can be utilized again if needed.

**dec010974** · 01-26-2016, 09:10 PM

AC Delco ep381 should be a direct swap. I used the same fuel pump for my 5.3/4l60e swap completed on my 1987 c10. It was a tbi driver also.

Bulldog88 · 01-31-2016, 01:24 PM

Ok guys the swap is going very smooth got the fuel pump in and ready to install it, cheap to not a bad price, what are you guys doing about fuel fittings I would like to keep the existing steel braided lines that are the but they both have male ends, what fittings work?

Cobalt964ruf · 01-31-2016, 09:57 PM

here is what i did on the fuel lines at the motor... kept the stock tbi braided lines under the truck... and used the ls fuel lines at the engine. yes its compression fittings, and no i have never had a failure with them. i use them on alot of pressure lines with no problem.

Bulldog88 · 02-01-2016, 01:13 AM

Where did you get that set up from?

Wasted Income · 02-01-2016, 10:48 AM

Compression fittings work great for fuel system stuff. Used them many times, never a problem.

solidaxel · 06-08-2016, 05:02 PM

Is this pump strong enough for a 5.3?

PERFORMANCE ELECTRIC P988K Fuel Pump Module Repair Kit Info

Category: Fuel Pump

$37.79

**truckdude239** · 06-08-2016, 08:31 PM

Soild i would jsut get an acdelco ep381 there like 40 buxs on ebay and work great no guessing

72MARIO · 06-08-2016, 08:57 PM

any link to the $40 pump ?

solidaxel · 06-08-2016, 09:26 PM

Thanks Dave
I'm on it !!

izzy_Britton · 06-09-2016, 01:37 AM

Quote:

Originally Posted by 72MARIO

any link to the $40 pump ?

http://www.ebay.com/itm/ws/eBayISAPI...861&rmvSB=true

I bought 2 of these... havent started swap yet but dont see why there would be any problems.

BR3W CITY · 06-09-2016, 01:45 PM

The most recent review for that pump says that "they didn't send me a 381, its an inferior Chinese generic replacement pump" ....so might be worth being a little careful.

Willie Makeit · 06-09-2016, 04:35 PM

Brew makes a good point ... doing a search on Amazon for the AC Delco part number brought up a fuel pump that looks nothing like the on in the ebay ad.

https://www.amazon.com/ACDelco-EP381...=1&*entries*=0

izzy_Britton · 06-09-2016, 11:13 PM

can you please share a link to a proper GM/delco picture of the fuel pump? I have not been able to find a gm/delco supplied photo to use for comparison against my actual ebay purchase mentioned above.

thanks

**dayj1** · 06-10-2016, 02:37 PM

Quote:

Originally Posted by izzy_Britton

can you please share a link to a proper GM/delco picture of the fuel pump?
thanks

http://www.rockauto.com/en/moreinfo....031500&jsn=458

solidaxel · 06-11-2016, 02:02 PM

Quote:

Originally Posted by solidaxel

Thanks Dave
I'm on it !!

Well at least the box says ACDelco and it looks the same!!!
Good service from USPS

01-26-2016, 03:20 PM	#1
Bulldog88 Registered User Join Date: Nov 2009 Location: DFW,TX Posts: 233	fuel pump question for 88 model 5.3 ls swap I'm about to do a 5.3 swap on a 88 Chevy Truck but I would like to keep the fuel pump in the tank if possible, has anyone ever done this if so what fuel pump is it that you used, part # or any suggestions would help, I don't think the tbi fuel pump will put out the pressure required for ls

01-26-2016, 03:24 PM	#2
Wasted Income Boosted Member Join Date: May 2002 Location: Mackinaw, IL Posts: 2,200	Re: fuel pump question for 88 model 5.3 ls swap I've done it. You just need to swap the in-tank TBI pump with a pump from an LS truck. It should drop right into the old hanger assembly. A stock TBI pump won't work. They only run about 12 psi, and you need 58 with an LS __________________ 1972 2wd K/5 Blazer Turbocharged 370 LSx - 941 rwhp / 1093 rwtq 1969 Chevy K-10 L33 5.3 / 4L80E / NP241 / 4" lift 1964 Buick Skylark Twin TURBO 383 LS pro-touring project 2014 VW Passat TDI - Daily Driver Turbo diesel 2015 Sierra Denali HD Duramax Turbo diesel 2023 Ford Explorer ST - Twin Turbskis 2023 Ford F150 RCSB - Whipple Supercharged 2017 Polaris RZR Turbo 2014 Nor-Tech Center Console - Twin Supercharged Outboards *TURBO ALL THE THINGS!!*

01-26-2016, 07:19 PM	#3
68c10airstream Registered User Join Date: Mar 2013 Location: Marquette michigan Posts: 828	Re: fuel pump question for 88 model 5.3 ls swap Wasted income is spot on. Your 88 is a return system that can be utilized again if needed.

01-26-2016, 09:10 PM	#4
dec010974 Senior Member Join Date: Oct 2012 Location: Miami, Florida Posts: 959	Re: fuel pump question for 88 model 5.3 ls swap AC Delco ep381 should be a direct swap. I used the same fuel pump for my 5.3/4l60e swap completed on my 1987 c10. It was a tbi driver also.

01-31-2016, 01:24 PM	#5
Bulldog88 Registered User Join Date: Nov 2009 Location: DFW,TX Posts: 233	Re: fuel pump question for 88 model 5.3 ls swap Ok guys the swap is going very smooth got the fuel pump in and ready to install it, cheap to not a bad price, what are you guys doing about fuel fittings I would like to keep the existing steel braided lines that are the but they both have male ends, what fittings work?

01-31-2016, 09:57 PM	#6
Cobalt964ruf Registered User Join Date: Jun 2014 Location: Piedmont, OK Posts: 364	Re: fuel pump question for 88 model 5.3 ls swap here is what i did on the fuel lines at the motor... kept the stock tbi braided lines under the truck... and used the ls fuel lines at the engine. yes its compression fittings, and no i have never had a failure with them. i use them on alot of pressure lines with no problem. Attached Images __________________ 1971 K30 burb carbed LS6 th400 np205 d70f 14bff 4whl discs lifted 35 bfg's 1994 k3500 rcsb trophy truck ls427 4l85e bw4401 9.25ifs 14bff g80 35 bfg's 1998 K3500 rclb ls427 4l85e bw4401 9.25ifs 14bff g80 35 bfg's 1999 k3500 crewcab dually 4x4 496ci 4l85e bw4401 9.25ifs 14bff g80 6" lift 37 bfg's

02-01-2016, 01:13 AM	#7
Bulldog88 Registered User Join Date: Nov 2009 Location: DFW,TX Posts: 233	Re: fuel pump question for 88 model 5.3 ls swap Where did you get that set up from?

02-01-2016, 10:48 AM	#8
Wasted Income Boosted Member Join Date: May 2002 Location: Mackinaw, IL Posts: 2,200	Re: fuel pump question for 88 model 5.3 ls swap Compression fittings work great for fuel system stuff. Used them many times, never a problem. __________________ 1972 2wd K/5 Blazer Turbocharged 370 LSx - 941 rwhp / 1093 rwtq 1969 Chevy K-10 L33 5.3 / 4L80E / NP241 / 4" lift 1964 Buick Skylark Twin TURBO 383 LS pro-touring project 2014 VW Passat TDI - Daily Driver Turbo diesel 2015 Sierra Denali HD Duramax Turbo diesel 2023 Ford Explorer ST - Twin Turbskis 2023 Ford F150 RCSB - Whipple Supercharged 2017 Polaris RZR Turbo 2014 Nor-Tech Center Console - Twin Supercharged Outboards *TURBO ALL THE THINGS!!*

06-08-2016, 05:02 PM	#9
solidaxel Registered User Join Date: Dec 2002 Location: Cactus Patch So. Az Posts: 4,749	Re: fuel pump question for 88 model 5.3 ls swap Is this pump strong enough for a 5.3? PERFORMANCE ELECTRIC P988K Fuel Pump Module Repair Kit Info Category: Fuel Pump $37.79 __________________ 53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42

06-08-2016, 08:31 PM	#10
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,237	Re: fuel pump question for 88 model 5.3 ls swap Soild i would jsut get an acdelco ep381 there like 40 buxs on ebay and work great no guessing __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

06-08-2016, 08:57 PM	#11
72MARIO Registered User Join Date: Nov 2000 Location: Huntsville Ontario Canada Posts: 4,051	Re: fuel pump question for 88 model 5.3 ls swap any link to the $40 pump ? __________________ 1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair http://67-72chevytrucks.com/vboard/s...d.php?t=625017 1967 C/20 6.0/4L80 Roofing Truck 1990 V2500 Suburban "Plow Truck" 2005 TAHOE DD

06-08-2016, 09:26 PM	#12
solidaxel Registered User Join Date: Dec 2002 Location: Cactus Patch So. Az Posts: 4,749	Re: fuel pump question for 88 model 5.3 ls swap Thanks Dave I'm on it !! __________________ 53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42

06-09-2016, 01:45 PM	#14
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: fuel pump question for 88 model 5.3 ls swap The most recent review for that pump says that "they didn't send me a 381, its an inferior Chinese generic replacement pump" ....so might be worth being a little careful. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

06-09-2016, 04:35 PM	#15
Willie Makeit Registered User Join Date: Oct 2013 Location: Alabama Posts: 1,234	Re: fuel pump question for 88 model 5.3 ls swap Brew makes a good point ... doing a search on Amazon for the AC Delco part number brought up a fuel pump that looks nothing like the on in the ebay ad. https://www.amazon.com/ACDelco-EP381...=1&entries=0

06-09-2016, 11:13 PM	#16
izzy_Britton Registered User Join Date: Apr 2013 Location: Nor-Cal Posts: 632	Re: fuel pump question for 88 model 5.3 ls swap can you please share a link to a proper GM/delco picture of the fuel pump? I have not been able to find a gm/delco supplied photo to use for comparison against my actual ebay purchase mentioned above. thanks __________________ WHO_DCTC - Wifes 05 Z-71 Build - Now defunct as she decided she wants an Escalade too Cream Puff - LS'd Square - Slow going on the back burner Tripple Threat - 3 Wrecks for the price of one build thread Project Delongdium - Step-Sons Plastic Clad 2003 Avalanche - DONE and Delivered.



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