that sux,,what drop kit u have?i go 120+ with no problems
that sux,,what drop kit u have?i go 120+ with no problems
i was having the same issue with my truck. the pinion angle was off and at 70mph it was vibrating pretty good at 90 it was unbareable. i shimmed my trans and rear end and got the pinion angle pretty close to where it needs to be i can do 110 now before it starts vibrating pretty bad. but im running 4:56 gears and id imagine my drive shaft is spinning pretty darn fast at 110.
09 CREWCAB LTZ SILVERADO, 6.2, SIX SPEED, CAI,
custom apllied racing sportsman four link with strange coil oversOriginally Posted by STUNNA
wtfan18 what is you pinion set at and your drive shaft angle??
Last edited by FullsizeRST; 07-13-2009 at 04:29 PM.
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currently my trans is at 0 degrees and my rear end is set at -1 id like it to be at -2 or -3 but i need a bigger shim.
09 CREWCAB LTZ SILVERADO, 6.2, SIX SPEED, CAI,
since you have a 4link out back, you really need to make the pinion match the tranny or get it close. Example....if tranny is pointed down 3 degrees make the pinion point up 3 degrees if the tranny is higher than pinion. And since you have a 4link you don't need to overcompensate for pinion roll like a leafspring setup...
Also when you are measuring, reference everything to the bottom of the frame under the cab. Don't go off the ground...
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