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Discussion Starter · #1 ·
Hey Guys,

I just installed my coil over springs from SSC

14 Impala 1.75 Drop front and rear on factory struts and shock in rear
12 Impala 1.6 drop front and rear on KYB Struts.

What I am experiencing is when ever I accelerate and reach 15-20 mph there is a slight vibration that goes away after exceeding that speed. I have completed my wheel alignment already and the problem still exist. Is there a fix that I can do to take away the vibration. My axles are still good no sign of wear and tear as it was not doing this prior to me installing the lowering springs.:nerd
 

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Most of the time, a shortened dog bone, upper engine mount, has to be installed so that the engine, trans, and axles are back in proper geometry. Install one of those and most likely the vibration will be eliminated.
 

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Discussion Starter · #3 ·
I was reading on another thread that another guy ordered a shorter dog bone and it was not needed since the 12 and up already have a shorter dog bone.
 

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@bma4life I do not have a vibration in mine and replaced the springs all the way around with SSC springs - I did not replace the struts, however, I used the factory struts, and I did not replace the dogbones. Did you use the anti-pogo washers with your lowering springs? That may have an effect as well.


@The Guz I kept factory struts on mine when I swapped in SSC springs. The ride, to me, is rougher (of course). But, it handles well, and looks even better. I have a bit of a Cali-lean on my car because I have 150lbs in the trunk with my subs and amp... almost want to put some coil helpers in there to raise it up.
 

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Discussion Starter · #6 ·
@Carbon X no i was told those anti pogo washers are only for the 3800 series and the sales rep was like im not sure if this will solve your problem. And its happening on my other impala the 9th generation and those are on factory struts as well. That one dropped 1.75 all around and the 12 dropped 1.6 all around. I am looking to add some 1 inch spacers for both to take away that tuck in look. I was reading on some other cars that they have experienced the same problem that I am and they are saying its due to the CV axle but they are fine no wear and tear and plus the 9th gen only has 13k my 12 has 56 k and I took to the tech and he didnt have a clue but he said the axles are fine.
 
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