The Stovebolt Site Forums The Shop Area Driveline 4 link rear suspension with torque tube

The problem with dropping the car that much is that the torque tube only pivots at the transmission. Unless the 2-link bars are the same length and pivot at the same point as the torque tube, you're going to break something. The bars and the rear/torque tube need to travel on the same plane when you have that much suspension travel

Open drive fixes the binding issue because it can pivot at the trans and at the rear. Which is why you can run shorter bars. 2 links(trailing arms) will still have pinion angle issues. a 4 link will be easier to fine tune your pinion angle. The NASCAR reference is good, however they use triangulated versions that allows articulation. BUT they dont have massive amounts of suspension travel that changes the pinion angle much which is why they work well in that situation.