2wd obs 5 lug to 8 lug swap

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.

nauju

Newbie
Joined
Nov 10, 2021
Messages
26
Reaction score
16
Location
Conroe tx
I’ve been doing some research and from what I’ve read it doesn’t seem that bad to do a 5 to 8 lug swap just use the 8 lug front upper control arms, knuckles, and brakes. The rear is just swapping the rear axle and using a conversion u-joint is this correct?
 

HotWheelsBurban

Gotta have 4 doors..... Rawhide, TOTY 2023!
Joined
Sep 18, 2019
Messages
10,188
Reaction score
18,982
Location
Houston, Texas
The control arms might be a different width....
The rear axle is probably more simple than the front suspension. You'll probably have to upgrade the front brakes; the 8 lug stuff is bigger, as are the rear drums. Master cylinder is different too.
 

someotherguy

Truly Awesome
Joined
Sep 28, 2013
Messages
10,310
Reaction score
15,559
Location
Houston TX
Control arms should be same width. On a 2WD the lowers are the same stamped part from 1500-2500-3500 so I wouldn't expect the forged uppers from a 2500-3500 to be wider than the 1500's stamped piece.

So yep, it's pretty much just swap everything over, providing you have a donor truck with all the parts. And yes, conversion u-joint..

My question is though, what's your goal? It won't be up to the job of a 2500/3500; your frame and transmission will still be the weakest links.

Richard
 

nauju

Newbie
Joined
Nov 10, 2021
Messages
26
Reaction score
16
Location
Conroe tx
Control arms should be same width. On a 2WD the lowers are the same stamped part from 1500-2500-3500 so I wouldn't expect the forged uppers from a 2500-3500 to be wider than the 1500's stamped piece.

So yep, it's pretty much just swap everything over, providing you have a donor truck with all the parts. And yes, conversion u-joint..

My question is though, what's your goal? It won't be up to the job of a 2500/3500; your frame and transmission will still be the weakest links.

Richard
Just to do something different, everyone does 5 to 6 lug swaps or 8 to 5 lug but I don’t see too many 5 to 8 lug swaps being done
 

HotWheelsBurban

Gotta have 4 doors..... Rawhide, TOTY 2023!
Joined
Sep 18, 2019
Messages
10,188
Reaction score
18,982
Location
Houston, Texas
Control arms should be same width. On a 2WD the lowers are the same stamped part from 1500-2500-3500 so I wouldn't expect the forged uppers from a 2500-3500 to be wider than the 1500's stamped piece.

So yep, it's pretty much just swap everything over, providing you have a donor truck with all the parts. And yes, conversion u-joint..

My question is though, what's your goal? It won't be up to the job of a 2500/3500; your frame and transmission will still be the weakest links.

Richard
Okay, good to know! I guess they look bigger because of the difference in height and material?
I get why people like the 8 lug look, and there's lots more wheel choices now(if you have the $$$$).
But why not just get a 2500/3500 to begin with; then you have a much more capable truck that can still be lowered, and still be usable for work/towing.
 

nauju

Newbie
Joined
Nov 10, 2021
Messages
26
Reaction score
16
Location
Conroe tx
Okay, good to know! I guess they look bigger because of the difference in height and material?
I get why people like the 8 lug look, and there's lots more wheel choices now(if you have the $$$$).
But why not just get a 2500/3500 to begin with; then you have a much more capable truck that can still be lowered, and still be usable for work/towing.
I already have a 3/4 ton 8 lug Squarebody and it’s mostly just to be different, my obs is a regular cab step side and I think it would look cool with 8 lugs
 

HotWheelsBurban

Gotta have 4 doors..... Rawhide, TOTY 2023!
Joined
Sep 18, 2019
Messages
10,188
Reaction score
18,982
Location
Houston, Texas
I already have a 3/4 ton 8 lug Squarebody and it’s mostly just to be different, my obs is a regular cab step side and I think it would look cool with 8 lugs
Yup it would! 8 lug trucks are badass (and I'm not just saying that cause I have Rawhide the crew cab!). @someotherguy would know the ins and outs of it; he's taken more of these trucks apart than I've ever seen.
 

someotherguy

Truly Awesome
Joined
Sep 28, 2013
Messages
10,310
Reaction score
15,559
Location
Houston TX
I already have a 3/4 ton 8 lug Squarebody and it’s mostly just to be different, my obs is a regular cab step side and I think it would look cool with 8 lugs
Understandable, just for custom purposes. I helped a friend with his project of turning a regular cab stepside into a slammed shortbed dually. He also swapped it from a V6 to a 502..

Richard
 

8-lug-Yukon

Newbie
Joined
May 19, 2024
Messages
3
Reaction score
1
Location
utah
from my experience in my 8 lug Yukon. the upper control arms are confirmed to have a different width.
I'm attempting to swap just the ball joints in the upper arms and hoping it works out.
my application is a 4x4 so that may have an effect on things.
 

Schurkey

Supporting Member
Supporting Member
Joined
Jan 14, 2018
Messages
11,724
Reaction score
14,905
Location
The Seasonally Frozen Wastelands
I'm attempting to swap just the ball joints in the upper arms and hoping it works out.
my application is a 4x4 so that may have an effect on things.
You must be registered for see images attach

6-lug ball joints have a different bolt pattern from 8-lug.

APPARENTLY they also have a different ball-stud taper and/or diameter also.
 
Top