I'm trying to figure out what angle to set the pinion yoke to.
I have a 85 Monte with an LS6/4L80E with BRP engine mounts, G-Force TH400 crossmember, UMI non adjustable LCA with UMI Adjustable UCA, and a QP 9" rearend. The control arms are polly bushings and the QP rear has rubber bushings. The car is not a DD but still see's more street time then track time. It only pulls a 12.9 at 4200' elevation.
It seems the more I read about setting the rear pinion angle, the more confused I get. Some are saying the rear pinion needs to be pointed down, some say I need to point it up, some say I need -1 or -2 or -3 degrees and ignore the transmission measurement... I think I'm just over complicating this in my head and worried about throwing a driveshaft.
When I take my measurements at the transmission output I have a 1 degree rear lower then the front. I measured my drive shaft and have a 1.8 degree rear lower then the front. Which way should my 9" rear yoke point and at what degree?
Can someone please help the pinion angle retard! curse_sign.gif
I have a 85 Monte with an LS6/4L80E with BRP engine mounts, G-Force TH400 crossmember, UMI non adjustable LCA with UMI Adjustable UCA, and a QP 9" rearend. The control arms are polly bushings and the QP rear has rubber bushings. The car is not a DD but still see's more street time then track time. It only pulls a 12.9 at 4200' elevation.
It seems the more I read about setting the rear pinion angle, the more confused I get. Some are saying the rear pinion needs to be pointed down, some say I need to point it up, some say I need -1 or -2 or -3 degrees and ignore the transmission measurement... I think I'm just over complicating this in my head and worried about throwing a driveshaft.
When I take my measurements at the transmission output I have a 1 degree rear lower then the front. I measured my drive shaft and have a 1.8 degree rear lower then the front. Which way should my 9" rear yoke point and at what degree?
Can someone please help the pinion angle retard! curse_sign.gif