smash493

2017 sierra crew cab 4x4 lowered 5/7. My t case angle is pointed -6 degrees down and i cannot go any higher. My driveshaft is at 0 degrees and pinion is set at +4 degrees. I have already shimmed it as much as possible, any higher and it hits the tunnel. Still getting unwanted vibrations I am sure its due to the working angles. What are my options here? I thought about lowering the engine with aftermarket mounts but I don't want to cause anymore issues.

strutaeng

Cut out the axle spring perches and reweld at the correct angle?

I've never hear of anyone lowering an engine. How would you even try to do that? 🤔🤷

smash493

Atomic fab make engine mounts that will sit the engine a 1/2" lower. My issue is not the pinion angle, i can shim that to whatever angle i want. It is the angle of the t case pointing down 6 degrees. and the driveshaft being at 0 degrees makes the working angle way off.

1redta

did the kit come with shims for the transmission?

smash493

It did not. I purchased shims and shimmed the t case up as far as possible. If I go any further it hits the trans tunnel.

wretched73

iTrader: (1)

Are you sure you're measuring correctly?

smash493

Yes, driveshaft removed on an alignment rack where I work. magnetic angle finder against the output shaft of the t case. Getting -6 and the driveshaft is at 0 degrees.