Quote Originally Posted by techinspector1 View Post
With weight on the car, at ride height, I'd put an angle finder on the rear face of the TH350 housing to determine the down angle of the transmission. If you leveled the carburetor pad on the intake manifold, the trans is probably at about 3 degrees down bubble. With a leaf spring rear suspension, the pinion will climb the ring gear more easily than it could with a more solid suspension system, like a triangulated 4-bar for instance. Therefore, I would install the pinion in the car at zero to one degree up bubble. With light power on at cruise, the pinion should climb the ring gear at about 2-3 degrees and the angles will cancel out, providing a smooth transferance of power.
Brilliant!!!! And probably why so many get U joint binding when everything appears correctly aligned.
This and the drive shaft tip are worth the price of admission my friend!