2010 Sierra RCSB, McGaughy's 34060 lowering kit...

I want to correct my pinion angle.. Right now in the back it's at 6* and front is 4*...So do I look for a 2* pinion shim for the rear end?

Right now I'm set at a 3/5 drop but plan on going to a 4/7 soon, should I wait until I lower it more and re-measure my angles? Or (since I raise it to 3/5 for winter) should I get the 2* shims for this suspension setup then get whatever other shims for the 4/7?

Also, what brand wins?

Pretty much how my truck is now

 

X2.. I'm also in the same process,but truck is more of a St strip just Did the 14 bolt swap flip convert, waiting on traction bars n then coils..

 

Your transmission is at a 4 degree down angle to your driveshaft? Yes those are some bad pinion angles as your rear end will rotate under power and make the pinion angle worse.

 

try first correct later, there is always a correct way to do things but as a i have experienced my own methods usually work fine!

 

Umm, ok....

 

Umm... No....


I would rather check the angles and do it right the first time instead of just winging it and risking breaking and ******* **** up.

 

yopu dont have to go WOT on the try. but the BEST way is to do it right just to be safe

 

Yes, I'm pretty sure that's how it is, but looking at the picture I made I'm second guessing myself, so I'm going to recheck it all.
Which it does kind of make sense to be that way as my rear end is above the leaf springs now..

 

If your measurements and diagram are correct, you need to pitch the pinion down 3*-4*. That is because the pinion will climb under power.

 

X2, 4* would work great.