Leaf Spring Torque

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.

Rkendrick05

Junior Member
Joined
Mar 12, 2024
Posts
12
Reaction score
6
Location
Claremore, Ok.
First Name
Ronald
Truck Year
1984
Truck Model
GMC Seirra Classic 1500
Engine Size
350 ci
I have a 1984 GMC half ton 2wd. I am replacing the leaf springs and shackles. Going to use new bolts and u bolts. Have searched for Torque values but can't find any.
Any help would be appreciated.
 

TotalyHucked

Full Access Member
Joined
Feb 24, 2020
Posts
4,314
Reaction score
14,207
Location
Auburn, Georgia
First Name
Zach
Truck Year
1985
Truck Model
Sierra 1500
Engine Size
5.3
However tight the old ones feel getting off, just tighten them about the same. I've never torqued any of that stuff, just went as tight as felt good and been fine
 

dd1990

Member
Joined
Nov 3, 2023
Posts
43
Reaction score
70
Location
Ventura CA
First Name
David
Truck Year
1990
Truck Model
Suburban 1500
Engine Size
350
Depends on the size and make up of u bolts, anywhere from 70ftlb to 150ftlbs, I do something in the middle 80-100ftlbs
 

Daron58

Full Access Member
Joined
Jan 11, 2022
Posts
90
Reaction score
198
Location
Ponchatoula La.
First Name
Daron
Truck Year
75
Truck Model
C10
Engine Size
250 I6
Go to general spring website and it will have a torque spec sheet according to size, good luck to you
 

nvrenuf

Full Access Member
Joined
Jul 30, 2010
Posts
2,088
Reaction score
2,800
Location
Mobile, Al.
First Name
John
Truck Year
1991
Truck Model
K5
Engine Size
454
Some fasteners need to be torqued. Some fasteners need to be as tight as you can reasonably get them.

A big bolt on a leaf spring, I’ve never torqued one but I’ll run them down until my air gun starts sweating. If you don’t have air tools, make it a little tighter than a lug nut.

Something that is important is to get all the bolts in place and the nuts started then put the weight back on the tires (not jack stands) then tighten the bolts. You don’t want the bushings all bound up because they’re tight and can’t rotate a tiny bit when you put the truck back on the ground and the springs squat some and the shackles change positions.
 

RaisedK5

Full Access Member
Joined
Sep 12, 2021
Posts
128
Reaction score
268
Location
Memramcook, New Brunswick, Canada
First Name
Leland
Truck Year
1975
Truck Model
Blazer
Engine Size
350
See attached chart.
 

Attachments

  • Screenshot_20250319_215833_Adobe Acrobat.jpg
    Screenshot_20250319_215833_Adobe Acrobat.jpg
    65.7 KB · Views: 0

Forum statistics

Threads
45,163
Posts
976,635
Members
38,129
Latest member
Vikingbeard
Top