Help! Pinion / drivetrain angle

[Jim Wintz]

Thanks guys for the info.

I did some shimming and adjusting and I can get pretty much anything with in reason. Going with the thought of keeping the engine and rear parallel I made the following adjustments.

Originally my rear end housing as angled about 5 degrees down in the front. The engine was about 3 degrees down in the back, this appeared to be a bad set up.

Now after some adjustments I still have the engine at 2.7 degrees with the tranny tail shaft going down. The rear end housing is now at 2.3 degrees with the front of the rear end where the drive shaft mounts going up. They are almost parallel, I might try to improve this a little. The difference in the center of the tranny and the rear end where the drive shaft will mount is about 1/16th, with the center of the rear end being higher. This means that the drive shaft would be running almost parallel, at no angle. However it would be running at about a 2.5 degree angle coming out of the tranny and then again going into the rear end where the u-joints connect. These angles would be almost the same but running opposite to help keep the u-joints lubed.

I was wondering if there were any thoughts on this set up, looks ok should work? Bad, need to change it ? ect.. ect.. From what I have read this looks like it should be ok, my only concern is with the rear end going up in the front 2.3 degrees will this hurt? With it being an IRS and the differencial being mounted almost solid to the chassis I did not think it would hurt or be effected when I accelerate like leaf spring or 4 bar type set ups.

Any thoughts and good advice more then welcome and I am sure would be helpful.

Jim