[dontlifttoshift]

When we were done with the tunnel and raising the transmission in CPDs car, working angles were 1.2* front and rear. Thats about as ideal as it could be.

Before we raised the tunnel and the car still had the 10 bolt when we initially set up the torque arm, working angles also matched but we were a tick over 2* and it was a lot of work to get there with the torque arm as we needed the roll the pinion down to get there.

We did a FN88 in a 55 chevy. I purposely put a 3.70 in this one as that is notoriously the loudest 9" ring and pinion. Rear end is dead quiet, I was elated. There is no easy way to make that work with the SpeedTech torque arm, but it's not impossible. It would also need new axle as the center line of the differential is different.

Currently doing a 67 Camaro with a S197 8.8 and a quadralink. As I reassemble my car it is also geting a S197 8.8 and a quadralink. Also setting my car up with a Cortex torque arm so I can make some comparisons but that's a different thread.