tuff

iTrader: (15)

I installed a 12bolt and a spohn torkarm and the pinon angle is off i have the gauge i just need the specs and were to measure off of.

1fastWS6

iTrader: (3)

Measure the pinion yoke and the driveshaft. You're checking to see if the centerline of each is parallel (this would be 0 degrees) or off by some amount. You want between 0 and -3 degrees difference depending on your application (street, drag, etc.). -2 or -3 is good for traction at the drag strip. BTW, negative pinion angle is where the pinion is pointing down relative to the driveshaft.

Hope that helps.

Scalpel

iTrader: (4)

1fastWS6, do you measure the two with the driveshaft disconnected from the yolk?

tuff

iTrader: (15)

So if the car is level and the trans is at diffrent angle say neg 2 and the rearend pinion is neg 1 you would have 3degrees neg or not.