I have a 95 Teg LS. I lowered it about 2 3/4 or so inches. I noticed after I lowered it when I take off and give it about 1/4 throttle the car like shakes. The more throttle you give it the more it shakes. About 4k rpms it stops shaking pretty much and is fine. Also in like 1st its pretty bad, 2nd its not real bad, and 3rd you can barely feel it. Once you let off the throttle though when it shaking it just stops. Does anyone know why it would do that?
Thanks Any Input will help

 

Did you get alignment after you lowered the car?

 

1st thing i would do is get it alligned... not just for toe, get a camber kit if you havent already...

if it still shakes, see if you knocked the weights off of one of your wheels....

 

If he knocked the weights off his wheels wouldnt it shake just coasting? He says it stops after he lifts up off the throttle...a motor mount would be my guess, since its only shaking when the engine is under load, and the more load you put on it the worse it is...

 

well it may or may not only at coast.... but off balance wheels always stop shaking with certain speeds...

 

I can go like 1/2 throttle in 1st gear. It shakes pretty bad but once you let off like at 3k rpms it just stops shaking completly. The weirdest part about it is that it dosent always do it. Its just like most of the time it does it.

 

just had this exact problem, check your cv joints, they probably need to be replaced. lowering the car that much would make any excessive wear 100 times more noticable, motor mounts might not be a bad idea either to keep the engine from shifting and wearing the joints by moving them too much. and an alignment, rotate, and balance is a MUST after lowering that much

 

I replaced the left cv joint when I lowered it. I dont know on the condition of the motor mounts. Their just stocks. So could I just use the polyurethane inserts to fix the mounts? The right cv joint one isnt torn, dosent leak grease, and also dosent click. I havent aligned it. I know I have to get new upper arms to align the front. I dont have the money for them yet. But the back you can just put washers behind the bolts of the upper control arm to align the camber of that. Can they adjust the toe and caster or do you have to get a kit to do that to.

 

caster is fixed unless you get a professional racing suspension, but toe is just adjusted by the tie rod ends on the front

 

Oh, I also had my tires balanced because I got a set of swirlies and put a new set of tires on them. I did that like 3 weeks ago and lowered it about 2 weeks ago. It didnt shake when I had just the rims. But once I lowered it, it started to shake.