How to I know if I cranked my t-bar to much?
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Joined: Dec 2023
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coil-over conversion kit for the GMT800
Torsion bars adjust front chassis ride height, that's what you need to be concerned with. Body height will change as a result of adjusting chassis ride height. When you adjust the torsion bars to make the body level, you're compensating for squashed body mounts and misalignment of body parts. Torsion bars are computer picked when the vehicle is on the assembly line, according to the options the vehicle is being equipped with. Each bar has a weight range that it is designed to operate within. Increasing chassis ride height out of factory spec puts added stress on the bars as well as steering and suspension parts. Too much stress and things will break. Hate to see you ruin those new Moog ball joints 
Here's how to tell if you've got it up too high:
Front chassis ride height is the vertical distance between the lowest, most inboard point, of the steering knuckle, to the center of the lower control arm pivot bolt.
1996 & newer, measurements must be taken with the vehicle on a level surface, wheels on the ground:
4WD(except ZR2) = 4.6” to 5.0” (4.8” is preferred)
4WD ZR2 = 4.6” to 5.2” (4.9” is preferred)
Additional information available here: http://www.vibratesoftware.com/html_..._propshaft.htm
Here's how to tell if you've got it up too high:
Front chassis ride height is the vertical distance between the lowest, most inboard point, of the steering knuckle, to the center of the lower control arm pivot bolt.
1996 & newer, measurements must be taken with the vehicle on a level surface, wheels on the ground:
4WD(except ZR2) = 4.6” to 5.0” (4.8” is preferred)
4WD ZR2 = 4.6” to 5.2” (4.9” is preferred)
Additional information available here: http://www.vibratesoftware.com/html_..._propshaft.htm
My issue is the harsh bouncy ride in this RWD and I thought I needed to crank the keys up. It raised the body about 1.5inches, drove around the block and it settled back to the stops. I thought something was wrong. Raised it almost to the top of the key's limit and drove around the block and ... yes it settled again. I went to a junkyard and bought another set, same thing, cranked it up and it settled. I have stock ride height, factory 20" wheels. New Rancho 5000x shocks, UCA, LCA, Energy Suspension sway bar bushing, and now I will check the Z-Height thanks to Captain Hook's info.
Has anyone used a coil-over conversion kit for the GMT800 RWD?
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Bill Gillin
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Dec 23, 2012 04:56 PM
