Pinion angle for dummies?

[dmopar74]

Im swapping in a 8.8 rear end and need to set up the pinion angle, I've always heard equal but opposite so if the trans was 3 degrees down the the pinion would be 3 degrees up. Then I've read to add or subtract up to 5 degrees but think 2 degrees would be ok for a street car? So if trans was 3 down as an example then pinion would be 1 up?

 

[tubbedamx]

I always have to read up on pinion angle. Once set up I usually forget all about it. That said here’s a lot info.

Search results for query: Pinion angle

 

[RustyRatRod]

Get a copy of the Mopar Performance Suspension manual ninth edition. It's all in there.

 

[MOPAROFFICIAL]

Whatever the transmission is up.. you want the same on the pinion but down, the pinion no more than 2° or 4° for hot street.. as much as 6° for drag racing.

 

[mopowers]

Im swapping in a 8.8 rear end and need to set up the pinion angle, I've always heard equal but opposite so if the trans was 3 degrees down the the pinion would be 3 degrees up. Then I've read to add or subtract up to 5 degrees but think 2 degrees would be ok for a street car? So if trans was 3 down as an example then pinion would be 1 up?

Your math is correct if you want a 2* pinion angle. The way I think about it is make the transmission and pinion parallel, then roll the the pinion down however many degrees to want the pinion angle to be. For leaf springs, 2-4* is fine.

 

[oldkimmer]

Whatever your trans angle is: your pinion angle will be -2 to -3 degrees down from there. Kim

 

[RustyRatRod]

Whatever your trans angle is: your pinion angle will be -2 to -3 degrees down from there. Kim

THAT right there ^^^^^

 

[92b]

Your pinion angle should be 2 to 3 degrees down from parallel to the trans angle. For your application.