Common questions

Is there more torsion on a Chevy Tahoe?

Is there more torsion on a Chevy Tahoe?

That is impossible since the LCA moves as well, so there is no more torsion on the bar than before, the spring rate does not actually change like many belive. The twisting action does not change the pre-load on the bar directly, so cranking your bars is just like adding a block in the rear or a coil spacer.

How to adjust a Chevy torsion bar for front end lift?

How to Adjust a Chevy Torsion Bar for Front End Lift. 1 Step 1. Lift the Chevy with the floor jack, placing the jack head underneath a frame rail and pumping the lever until the desired wheel is in the air. 2 Step 2. 3 Step 3.

Are there different bars on a Chevy Tahoe?

To make things even more complicated the hex heads on the bars don’t line up with one another, and some bars are different. But as a general rule, all bars you will find on a half ton truck are about the same and all bars on an HD truck are about the same.

What kind of Bar is a torsion bar?

A torsion bar is essentially a steel bar with some form of splines on each end. On our GM torsion bars it’s not the type of splines you are used to, like what you would find on an axle shaft, but instead a hexagonal head, similar to a bolt head. In fact you can slide a socket over it if you have a big enough one.

That is impossible since the LCA moves as well, so there is no more torsion on the bar than before, the spring rate does not actually change like many belive. The twisting action does not change the pre-load on the bar directly, so cranking your bars is just like adding a block in the rear or a coil spacer.

To make things even more complicated the hex heads on the bars don’t line up with one another, and some bars are different. But as a general rule, all bars you will find on a half ton truck are about the same and all bars on an HD truck are about the same.

What are the different torque ratings for torsion bars?

GM makes a variety of different torsion bars with different torque ratings. The torque rating # is in ft/lbs needed to move the spring. The numbers seem huge, but remember there is leverage and a lot of weight on them! Obviously the heavier bars are in heavier trucks. Also, the different bars have different indexing of the hex ends.

Can you swap a 3 / 4 ton torsion bar?

but yes easy swap. if you swap in 3/4 or 1ton bars you must swap the left bar to the right side and the right to the left side. the position of the index is off set diffrent on them to 1/2 ton stuff. here is the t-bar decode sheet.

What’s the difference between leaf spring and torsion bar?

A leaf spring uses flex and is a progressive spring. The torsion bar on the other hand uses resistance to torque and is a linear spring. A torsion bar is essentially a steel bar with some form of splines on each end.

How are torsion bars used in Chevy trucks?

Chevrolet cars and trucks use torsion bars where normal coil or leaf springs will not fit. The bars have the added advantage of being adjustable.

Is the Chevy Tahoe a 3 / 4 ton truck?

99 Chevy Tahoe 4DR, 2WD was a 3/4 ton truck…. So is it or isnt it? If its not, can I simply change out the leaf springs and coils and make it so? I already have HD Bilstien shocks on the front end. No, there is more to it then springs and shocks. The Tahoe is a 1/2 ton vehicle with some “heavy” parts…

but yes easy swap. if you swap in 3/4 or 1ton bars you must swap the left bar to the right side and the right to the left side. the position of the index is off set diffrent on them to 1/2 ton stuff. here is the t-bar decode sheet.

What kind of suspension does a Chevy truck use?

by Eli Laurens. Chevrolet cars and trucks use torsion bars where normal coil or leaf springs will not fit. The bars have the added advantage of being adjustable. The torsion bar suspension has become popular in Chevy’s 4WD truck line, in which the switch to independent front suspension (IFS) leaves little room for a standard coil spring.

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Ruth Doyle