My car is a 1967 Barracuda. Stock suspension all around, rebuilt stock springs with the 7 1/4 changed to a 1973 8 1/4 rear axle, no pinion snubber. I am good with stock ride height and I have installed a GV overdrive in the car which extended and lowered the transmission tailshaft. My rear axle pinion angle is 3* up and the transmission is 5* up. (up being up toward the radiator) By my calculations I need to add a 1.5* shim to the rear spring perches to lift the rear pinion angle and bring the delta to within .5*.
Is my math correct and where can I buy an all steel 1.5* X 2.5" wide shim?
All advice read and appreciated------------------DR----------------:)