Adding Pinion Angle When Moving Mounts

[Bruzilla]

I have an E-body 8.75 rear that I'm putting onto a 74 B body, so I have to move the mounts about 5/16ths of an inch outward, and I was wondering if it would be a good idea to add -2 degrees of angle to them when the new mounts are welded on? Seems like a better way of adding some negative angle than buying shims.

I was wondering how many folks have had to change their pinion angle from stock?

 

[67Satty]

I changed mine using shims. You have to measure the angle with the weight of the car, and ideally the driver's weight, on the suspension. So you would have to figure out how to work around that since the rear is out of the car right?

 

[Bruzilla]

Correct. I'm not really smart when it comes to pinion angles, but it seems like negative is good, and positive is bad, so if I have the brackets mounted -2, it might save me having to buy shims but it can't really hurt. Or am I totally out to lunch?

 

[wedge69]

True to what he says ! I even put sand bag's or someone in the seat when I set mine !!
You need to look at the geomitry and so on on your set up. Take the time the first time and your going to be Ahead of the curve !!
I set mine down (-) aound 1 to 2 Degree depending on springs and traction additives being used.

 

[snakeoil24]

Add shims and weight also fill gas tank. Dont weld with 2 degree. Weld straight up and add..

 

[bm02tj]

did you have to shim the old rear end
use your old one to give you how to adjust your pinion angle