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I am looking for help to determine the lift height of my truck.
Tires are 42's
Rear lift blocks are 5"
Rear traction bars are 80" long
Truck sits at just over 8' from ground to above drivers door.
I hope pictures are able to help.
Last edited by snidly; Nov 30, 2024 at 12:04 AM.
Reason: wrong forum its a 03 f350 7.3 psd
After going through trying to figure this out myself (to determine how much my front coil springs have sagged), the advice that I have received here is to go in to an alignment shop and have them measure "Z" to determine how much lift you have, (change in height from stock "Z" height).
The measurement taken at Z will be between two hard points and that have a defined measurement from the factory.
It will not be from the center of your axle to the bottom of the fender or anything like that (most likely). It will be from a suspension component to a frame component is what I have been told.
BTW, I am going to a local alignment shop next week to get this done myself.
There are a few variables from the factory to consider, springs, block size bla,bla. . The blocks may be 5" but the spring packs are 5" of lift or so as well.. Not my cup of tea, but clean truck. BTW, what is the tank in the rear of the truck for? I'll never understand those "traction bars" On any coil spring solid axle vehicle if the "bar" is at an angle, and you compress the suspension, it changes length as it goes thru its range of motion. With your setup its trying to push the rear diff back if the springs were compressed. On my POS jeep TJ it causes the diffs to shift from side to side.The extra leverage causes broken mounts and wasted bushings.
I am looking for help to determine the lift height of my truck.
Tires are 42's
Rear lift blocks are 5"
Rear traction bars are 80" long
Truck sits at just over 8' from ground to above drivers door.
I hope pictures are able to help.
I am guessing your truck has an 8" lift on it, possibly more. There May have been 10" lifts available some years back for these trucks. Those rear leaf springs are Not factory, they are aftermarket and have much more arch than the factory ones had. For a comparision, I am attaching pics of my old truck... 2000 f250 6.5" lift, one extra inch added to the front, 4" wide Bushwhacker fender flares (have to Cut-Out 3" of each fender before installation) 38"x14.5" Parnelli Jones Dirt Grip tires.
Who ever did all the lift work on your truck "Did It Right" undercarriage looks really clean!!
Nice looking truck.
The previous owner finally got back to me. He said the lift is between 14" and 15" , because the lift was a custom deal and not a kit .
There are a few variables from the factory to consider, springs, block size bla,bla. . The blocks may be 5" but the spring packs are 5" of lift or so as well.. Not my cup of tea, but clean truck. BTW, what is the tank in the rear of the truck for? I'll never understand those "traction bars" On any coil spring solid axle vehicle if the "bar" is at an angle, and you compress the suspension, it changes length as it goes thru its range of motion. With your setup its trying to push the rear diff back if the springs were compressed. On my POS jeep TJ it causes the diffs to shift from side to side.The extra leverage causes broken mounts and wasted bushings.
Any rear axle traction bars should have a shackle at the frame end to allow axle movement. Any truck that has them solid mounted to the frame has essentially built a linked suspension with the front half of the leafs being variable length upper links. When the leaf compresses and the front half gets longer, it tries to push the axle back, but the solid mounted bars don't let it and then the axle tries to rotate around the bars axle mounts. Which is why it usually rides like poop and breaks stuff. I've seen it done on off road trucks and they mount a shackle on both ends of the leaf spring which allows the spring to stretch as it's compressed without moving the axle.
