2010 crew cab silverado 3-6 drop and it seems If I drive normal im fine but if I punch it there's a lil vibration. Is there a way to fix it or am I fine? Plus I want to go 4-6 maybe 4-7 ans with 275 55 20 tires I still seem to rub when I went that low In front so I raised it a inch now no rub. But I liked it lower is there a way to not rub without tubbed front?
Pinion angle is off. Figure out what suspension setup u want and get it there first, then set pinion.
You need a angle finder. Place the angle finder on the tailstock of the trans and getting the reading to the degree.
Then place finder on the rear end by the driveshaft, where its flat, and get the reading from there in degrees.
The rear end must match the trans output in degrees but on opposites
Therefore, if the tailstock on trans is at -6 degrees, you want the rear end to be +6 degrees...
Then place finder on the rear end by the driveshaft, where its flat, and get the reading from there in degrees.
The rear end must match the trans output in degrees but on opposites
Therefore, if the tailstock on trans is at -6 degrees, you want the rear end to be +6 degrees...
Ah gotcha. Thanks for the help. First time actually using a flip kit and going this low so in learning stage.
some expect professionalism from everyone from the go...they were just blessed with great engineering skills in the womb 
I'm battling the same situation on my 2013 w 4000 miles on it. Trans is -5 and rear is +5. I still have a vibration at 65 and anything over 70 and up. Very aggravating. Anyone know why I still have vibration? Do I need to be closer to 3 at each end?
Last edited:
Pinion angle can be quiet severe before it becomes an issue. I would look at other solutions. Usually pinion issues only cause problems on and off of accelration. Alot of time people complain about vibrations over pinion but its actually tires/rims. Usually suspension and new wheels go on at the same time
No vibration before lowering and still have vibration with or without Stock wheels. Issue clearly is related to lowering. Driveshaft itself is at 0 degrees
I was told the best spot is -2/3 on both ends. It's weird to me since the truck came -6 at the tail shaft. Also found this which made a little since.
Do you know what ypour pinion on trans and rear end is at?
Above is true, your shaft cannot be 0 degrees. Adding shims to the rear, and adding spacers to the trans to get your shaft at the proper operating angle of 2/4 degrees is idle
Above is true, your shaft cannot be 0 degrees. Adding shims to the rear, and adding spacers to the trans to get your shaft at the proper operating angle of 2/4 degrees is idle
Last edited:
Yes tailshaft of trans is at -6 and rear end pinion is exactly +6. On the drive shaft i am exactly 0 degrees. I was thinking raise the trans a bit and or use a pinion shim under leafs of about 2 or 3 degrees.
So if I'm understanding this The ideal theory is that the tailshaft angle and the rear pinion angle need to be opposites as long as this in turn creates a 2/3 degree angle on the drive shaft itself?
So raising the tailshaft with a trans spacer and adding a 3 degree shim to bring the rearend to a +2 or 3 should give me a slope on the DS itself?