custm2500

You caused the vibration not the 2? drop. you think the factory would allow 1000 lbs in the bed to cause a driveline vibration!?!?!


The shim didn't hurt anything but there is no need.

gitchesum

Belltech 6406
Specialty Products Company 86255


I got them both through Amazon for just under $100, shipped.

azmidget91

Installing drop shackles is not the same as putting a load on the truck.... Drop shackles on these trucks will effect the u joint angles much more than the older trucks that have shorter leaf springs.

gitchesum

Definitely changes the pinion angle more than the stock springs with a load would ever allow. Heck, the top of the shackle almost touches the bottom of the bed.

Just remember to make sure the pinion shims are mounted fat side to the rear. The other way around definitely didn't work.

zimmer0

iTrader: (1)

Looks good. I also have the 2.5* shims installed yet i'm still getting some vibes. Anyone have experience with dropping the carrier bearing? Is this a more simple fix opposed to getting 4* shims and having to put a longer spring pin?

Rexamus23

Instead of guessing at which shims you need, you can take the truck to a shop and just have them measure your pinion angle. They'd be able to tell you exactly what you need.

zimmer0

iTrader: (1)

i've measured myself. The angle at the trans is 5* and the angle at the axle is 2-3*

Sean006

Why so some measure different than others ?

Mine is fx2 crew appearance etc

Sean006

Sure hope I get no vibration. Ordered the same kit u did having it installed sat am.

SpeedViktm

The urge to drop the front will hit in a few months, if not sooner... trust me.... But it looks great!