Transmission and Pinion Angles 1967 Impala Convert
I have the new zz502, 4L85 and the tranny crossmember installed and was looking to order a new driveshaft. When doing so and getting the dimensions I also looked at the 12 bolt rear end that I installed last year and just assumed the pinion would be pointed up slightly (with full weight of the car on the tires/jack stands) and it was pointing down. I have the tranny at about 3 degrees down and assumed the stock 4 link would be about the same, but at an upward position. When i measured it was around 1.7 to 2.2 degree down also. I had no fuel in the new tank and no additional weight to account for passengers in the car. Is this correct? All of the info i have read normally had the tranny 3 degrees down and the pinion 3 degrees up, leaf spring cars may have more pinion due to the rotation when power is applied. Is there really anything I can do other than buying adjustable links? The bushings are the poly Energy Suspension ones and have been in the rear for over 10 years now and also with the old 10 bolt.