[cobretti96]

i have a unexpected problem, first gocart drive resulted in wicked vibration
when any power was applied, found pinion angle was way off causing the u-joint to contact the yolk. major positve angle! havent put the angle gauge on it yet, but what the heck i havent heard anybody else having this problem. ps its a 351 based motor with tremec tko 600 tranny.and yes i trimmed the tailshaft torque arm mount.dont wanna have to buy adj control arms any help would be great thanx!

 

[SveltGt]

Need more info on rear suspension set up

4-Link, 3-Link, 5-Link, shocks, springs, and rear diff info (IRS, live axle) as well (limited slip installed?).

You really need to check the pinion angle.

Did you liberally lube up all the rear suspension bushings?

Can you move the suspension smoothly through its full range without the shocks attached?

Just a few things to check.

 

[2FAST4U]

Pics of it not jacked up?

 

[larryb]

did U use tranny spacers??? this will considerable affect pinion angle and bind if way off, Mine binds on at full droop