in tank fuel pump

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

WhiteR30

Junior Member
Joined
Jul 3, 2014
Posts
13
Reaction score
7
Location
West Texas
First Name
Casey
Truck Year
1988
Truck Model
R30
Engine Size
454
Hey all,
from y'alls experience, what is be the best way to replace the in tank fuel pump on a square body, drop the tank, or pull the bed ?
I have a fuel pump that needs replacing, if and when i do, i will replace both pumps at the same time. Just curious as the which method is easier, or less of a hassle.
Thanks
 

Camar068

Supporting Member
Air Force Supporting Member
Joined
Feb 5, 2014
Posts
5,044
Reaction score
5,005
Location
Kentucky
First Name
David
Truck Year
1986
Truck Model
K10/LM7 5.3/4L60e/np208/3.73/32"
Engine Size
10 yrs Air Force
I've got the burb tank under my bed so it's easier for me to pull the bed.

But with you having saddle tanks, it's a toss up. Although it appears you have a long bed dually....may be more difficult to pull the bed.

Of course, when you have the bed off, you'll be able to clean up any rust and such that you find while it's off. Be a good time to change your shocks as well.

Just a thought.
 

Chevy 88

Full Access Member
Joined
Mar 28, 2025
Posts
783
Reaction score
792
Location
Canada
First Name
f7t6
Truck Year
1988
Truck Model
GMC
Engine Size
350
I pulled a bed once. It ******* sucked. After that the pump failed in 10 months. That time I cut a hole in the bed and swapped the pump in WAY less time and way less effort. I put a hinge and latch on the fuel pump access hatch. The next buyer was very pleased that I made this mod and bought the truck without hesitation. If you were buying a truck, would you want it to have an access hatch? Ya, me too....
 

ali_c20

Supporting Member
Supporting Member
Joined
Sep 20, 2016
Posts
2,130
Reaction score
3,244
Location
Austria
First Name
Alexander
Truck Year
1974, 1979
Truck Model
C20, K5
Engine Size
350, 350
Drop the tank and put it in with longer fuel hoses. Search the forum, you will find good info bout dropping the tanks and sending unit install.
 

CalSgt

Full Access Member
Joined
Oct 3, 2021
Posts
2,288
Reaction score
5,527
Location
CA
First Name
Casey
Truck Year
1980
Truck Model
Chevy K-10 Custom Deluxe
Engine Size
350
I’d vote dropping the tanks and extending the fuel lines on the reinstall. The lines from 1988 are likely to be stiff and ready for replacement anyway.
 

WhiteR30

Junior Member
Joined
Jul 3, 2014
Posts
13
Reaction score
7
Location
West Texas
First Name
Casey
Truck Year
1988
Truck Model
R30
Engine Size
454
i appreciate your suggestion.
looks like i will be dropping the tanks
 

edgephoto

Full Access Member
Joined
Aug 4, 2023
Posts
485
Reaction score
767
Location
Stafford, CT
First Name
Greg
Truck Year
1987
Truck Model
GMC V3500
Engine Size
7.4L
Drop them with the brackets. They bolt from inside the frame. The brackets are not the same front and rear. The repro brackets fit pretty good.

If you buy the tank isolator kit(s) from LMC just know you are getting scraps of roofing felt. I got hosed by this. Ended up buy some 1/16". x 2" rubber strips from Amazon. That stuff worked perfect.

While you have the fuel pumps out look in the tanks. If there is any rust just replace them. They are not expensive and will save you an issue down the road.
 

dusterdude

Full Access Member
Marine Corps
Joined
Oct 7, 2020
Posts
510
Reaction score
657
Location
US
First Name
mark
Truck Year
1985
Truck Model
gmc c15
Engine Size
305
What edge said,i bought 2 from amd.very nice tanks.
 

WhiteR30

Junior Member
Joined
Jul 3, 2014
Posts
13
Reaction score
7
Location
West Texas
First Name
Casey
Truck Year
1988
Truck Model
R30
Engine Size
454
excellent suggestions.
I appreciate it.
 

Broken85

Supporting Member
Supporting Member
Joined
Jan 14, 2024
Posts
310
Reaction score
449
Location
Cumberland, NJ
First Name
A
Truck Year
1985
Truck Model
K10
Engine Size
350
Drop them with the brackets. They bolt from inside the frame. The brackets are not the same front and rear. The repro brackets fit pretty good.

If you buy the tank isolator kit(s) from LMC just know you are getting scraps of roofing felt. I got hosed by this. Ended up buy some 1/16". x 2" rubber strips from Amazon. That stuff worked perfect.

While you have the fuel pumps out look in the tanks. If there is any rust just replace them. They are not expensive and will save you an issue down the road.
I cut up an old tractor intertube and sprayed it with contact cement and stuck them to the tank. Probably better than original.
 

Grit dog

Full Access Member
Joined
May 18, 2020
Posts
9,558
Reaction score
17,536
Location
The Right side of Washington
First Name
Todd
Truck Year
1986, 1977
Truck Model
K20, C10
Engine Size
454, 350
I cut up an old tractor intertube and sprayed it with contact cement and stuck them to the tank. Probably better than original.
I used strips of left over roofing ice n water shield. Tar paper, rubber strips etc all work great.
 

edgephoto

Full Access Member
Joined
Aug 4, 2023
Posts
485
Reaction score
767
Location
Stafford, CT
First Name
Greg
Truck Year
1987
Truck Model
GMC V3500
Engine Size
7.4L
What made me so mad about the scraps of roofing felt was they do not mention what the material is on their site and they are literally scraps. For what you charged me, try and make it look good. Cut them to the proper size. Make an effort.
 

WhiteR30

Junior Member
Joined
Jul 3, 2014
Posts
13
Reaction score
7
Location
West Texas
First Name
Casey
Truck Year
1988
Truck Model
R30
Engine Size
454
Question,
what is the advantage / disadvantage of using the plastic clamp vs metal clamps in the in tank electric pump?
This is the deplhi FE0114, 60psi pump. I have 12psi at the TBI.

i installed new gates clamps on the sending unit when i dropped the tank and installed the new pump.
 

Attachments

  • thumbnail_IMG_0007.jpg
    thumbnail_IMG_0007.jpg
    19.5 KB · Views: 50
  • thumbnail_IMG_0073.jpg
    thumbnail_IMG_0073.jpg
    13.5 KB · Views: 49
Last edited:

Forum statistics

Threads
48,661
Posts
1,074,097
Members
43,328
Latest member
anjones98
Top