Trailing arm option

[SCOTI]

Originally Posted by lolife99

There’s not much if any articulation in the stock bushing.
The I-beam design of the stock trailing arm allowed it to twist.
When you build a solid trailing arm (round or square tube) it has to have a flexible joint at the front.

Well..... It doesn't have to. There have been multiple options out there w/poly bushings. But those options built using square/round tubing w/poly bushings will definitely bind before the stock stuff would.
I think of it as going from Radials to Bias-Ply tires (backwards in functionality).

The combo of the original I-beam construction, length, orientation, & the front rubber bushings made them compliant enough to survive. Start changing some of those dynamics & it will possibly impact the effectiveness on the others.

If you're choosing aftermarket tubular constructed Truck-Arms, they need to have a spherical joint to work better than what came form GM.