suspension differences
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4wd High
Joined: Dec 2025
Posts: 9
Likes: 1
suspension differences
Is there a difference between 1969 and 1970 ford f-100 4x4 front and rear suspension. I'm wanting to install a 2.5 inch to 3 inch suspension lift the only thig that I see available is for the 1970 any help would be appreciated
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4wd High
Joined: Dec 2025
Posts: 9
Likes: 1
thank you for the information that's seems to be what I'm finding out also. can't believe there that many differences between the years. I really didn't want to go with the four inch lift kind of wanting the look to be around 2.5 to 3 inch thanks agian
Lead Driver
Joined: Jul 2017
Posts: 9,606
Likes: 1,175
From: San Jose, CA
I wonder too, what the differences are?
Do you have power steering or manual? Is it factory original either way? Or have any of the links been changed?
Steering box facing the side or up and down?
Standard Dana 44 front end with open knuckles?
Steering arm on top of the driver side knuckle?
The coil spring should be identical from 66 to 79. At least identical in design, if not actual spring rate.
The C-bushings on the radius arm caps are the same from 66 to 79
The radius arm bushings at the rear of the arms are the same from 66 to 79, but might vary by truck type. Meaning Early Broncos used one design, full-size Broncos and trucks used another. With maybe a couple of variations in there.
But they were mostly interchangeable.
The only thing I can think of is spring rate, engine type and weight, and steering linkage.
The Pitman Arm would vary from style of truck and steering linkage to another. And some trucks had the steering box and arm angled out to the side, whereas others had it coming out the bottom.
Got any pictures of your set up?
Do you have power steering or manual? Is it factory original either way? Or have any of the links been changed?
Steering box facing the side or up and down?
Standard Dana 44 front end with open knuckles?
Steering arm on top of the driver side knuckle?
The coil spring should be identical from 66 to 79. At least identical in design, if not actual spring rate.
The C-bushings on the radius arm caps are the same from 66 to 79
The radius arm bushings at the rear of the arms are the same from 66 to 79, but might vary by truck type. Meaning Early Broncos used one design, full-size Broncos and trucks used another. With maybe a couple of variations in there.
But they were mostly interchangeable.
The only thing I can think of is spring rate, engine type and weight, and steering linkage.
The Pitman Arm would vary from style of truck and steering linkage to another. And some trucks had the steering box and arm angled out to the side, whereas others had it coming out the bottom.
Got any pictures of your set up?
Mountain Pass
Joined: Oct 2024
Posts: 160
Likes: 65
I’m probably going to end up going with the power steering conversion kit from benchworks I’m not positive yet on that. I believe the rear springs on the 75@ up are 3” wide and are longer. The only kit I could find for the lift was skyjacker and it was just a single lift spring otherwise a guy can have a set of 2.5” springs made but will be expensive
Last edited by 1971f1004wd; Dec 7, 2025 at 07:43 PM.
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