Hey guys new to the forum!

I recently took ownership of my great grandfathers 87' single cab with All the original paper work and even the build sheet , I'm looking to lower it on a budget so i went with 3 inch blocks for the rear new ball joints to flip up front and i plan to crank the torsions down a bit to ultimately give me a 4/3 drop. My question is how many cranks ( full turns) do i need to do to get the 4" up front ? i understand the bj flip gives me 1"-1 1/4" drop but ive never dealt with t bar suspension. All help is appreciated ! Thanks guys!

 

no real way to tell how many turns seeing as every truck was used and abused differently. Your going to have to loosen em up, put it back on the ground bounce it up and down and see how it sits and go back and readjust. Because you can do the same amount of turns on both sides and itl still be leaning.

 

It doesn't have to be just a random hit-or-miss attempts on the adjuster bolt; you can estimate it first to get in the ballpark:

1. With the truck on the ground, first bounce the suspension to make sure it is settled at it's neutral height. It might be helpful (but more work) to disconnect the shock absorbers for this.
2. Figure out how much more lower you want to go. Let's say you want it 2" lower than the neutral height.
3. Measure the distance between the ball joint and the lower arm pivot. Let's say it is 12".
4. Measure the distance between the torsion bar adjuster bolt and the torsion bar arm pivot. Let's say it is 4".
5. Then it is just a matter of ratios. 2" X (4" / 12") = 0.67". The (4" / 12") factor is the ratio of the adjuster arm length to lower control arm length.
6. Count the number of threads on the adjuster bolt that is 0.67". That is the number of turns to lower your truck an additional 2".
7. You will probably not be exactly where you want to be height-wise because changes in geometry as the bolt is turned will affect how much the ride height changes per turn but you should be close.
8. If you run out of adjustment bolt, then you will probably have to re-index the torsion bar.