8 3/4 pinion angle
7 degrees nose up. If they don't know what that means, they don't have any business moving spring perches.
Hate to disagree with you David, but shouldn't that be nose down to compensate for spring windup under acceleration. I have mine set at 5 nose down and have no issues.
This is how you measure it.
Make sure the car has all the weight on the wheels.
Using a magnetic based angle finder.
Attach it to the tranny on a flat surface and determine the angle that the tranny is at.
We will assume it is at zero to make things easy.
When you have your rearend in place sitting on the perches and the u-bolts semi tight, attach the angle finder to a flat surface on the pinion housing.
This will give you another angle.
I used a small hydraulic jack to raise the nose of the pinion until I had the proper angle.
I then tack welded the perch to the rearend housing.
After that, I removed the rear from the springs and finished welding the perches to the housing.
Using grumpuscreature's 7 degree's, if you found the tranny was at +3 degrees, you would set the rear at -4 degrees or 4 degrees nose down.
It is very imprortant to use surfaces that are parallel to the drive line.
Somebody please correct me if I am wrong. But this worked for me.
Jack
