95z6spd

iTrader: (1)

Hey guys. My car has started to have a very bad vibration at speed. It happens mostly in 5th or 6th at speeds between 55-70. its the worst under light throttle loads.It does change with different throttle angles. I think my pinion angel is off. I have it up on the lift right now and put the magnetic angle finder on it. If i put it directly under the torque arm it reads +6. If i put right under the pinion it reads +10. Is t his the correct way to read it? or should it be on thr ground? And if it does need to be on the ground, how do you adjust it??

Casper9T9

iTrader: (1)

http://www.rosslertrans.com/Tips/Pinon.htm

JS

iTrader: (4)

I'd use madmans way of doing it.
Hit the seach for Pinion angle,he'll come up.

John_D.

iTrader: (2)

The suspension needs to be loaded (not with the wheels hanging down).

Most accurate way is off the front of the yoke, with the driveshaft off.

My bmr torque arm has a flate plate on the bottom, where the mounting bolts to the diff go. I get the same reading from there.

JS

iTrader: (4)

U wanna take the measurement on a loaded chassis with the tires u race on and go from the ground to the bottom of the driveshaft.

Madmans way is cake and thats the way to do it...