bad vibration

[coupecop]

I just changed the gears on my car 2 weeks a since then I have had a bad vibration . I have changed I joints motorMounts transmount and crossmember Bushings . I don't know what else to do can some one help. Thanks in advance

 

[Foxfan88]

consider replacing the stock steel DS with a nice alum unit, a better balanced and lighter unit it should cure your vibration. alot of people get a DS vibration after a gear swap due to the DS spinning ALOT faster than it ever has before.

i had a bad vibration and the Alum DS cured it and then some. smooth as silk cruising down the road.

 

[Flavadave4]

Aluminum Drive Shaft will most likely cure your problem, unless you had the axle out for the gear install, then you want to check your pinion angle to verify nothing is binding up.

 

[nonglossjason]

what about the harmonic balancer? you check that yet?

 

[coupecop]

I had changed the balancer almos 8 months ago so it fairly new

 

[Aliate X]

+1 for aluminum d/s, I had a vibration after my gears were done, d/s cured it. the stock d/s just isnt balanced up to the speeds that your spinning it after you put gears in the car. If you think about it your now crusing down the highway in 5th at like 3k rpms, with stock gearing 5th at 3k rpms is god knows how many mph....