Quote:
Originally Posted by MAStuart
I would shim the pinion down 1 degree. Depending how your rear is mounted under load it should become equal and parallel with your trans angle. Your pinion being higher than your trans output is common on a lot of cars that sit low with tall tires. Yes a shorter tail housing would help with the u joint working angles if they are too sever.
|
Using a non-IRS rear suspension on a drag car this approach will provide a better mechanical operation and vehicle performance under launch and hard acceleration. On a daily driver, it will insure your alignment is continuously off by whatever amount you have shimmed the pinion down.
On an IRS, the center section is bolted to the chassis and is, for all intents, unmoveable. The pinion-down shimming model will not produce the desired results; in fact, just the contrary. It would be better to set the driveline up as in the top pic in post #2.
In the end, it is the OP's call, and by definition, whatever he decides will be right, at least for him. The equal angles install model will provide smooth operation and the longest driveline life.