Vibration after Hotchkis rear lower control arm install.

Got a good deal on front and rear sway bars and rear lower control arms. They were new and never installed. I have a vibration between 35-40 and again at 55-60. Its like riding on very hard tires and can be heard and felt through out the cabin. They are Hotchkis 1305. When I compared them to stock, I noticed there was about 1/4" greater distance between the mounting bolt holes. Took the rear sway bar off and same results. Only thing I can think of is that the pinion angle is off. I know these are for the all b bodys and help center the rear wheels.

Put new bushings in the stock arms and all is good. Anybody else have this issue?

The lower rear trailing arms are different for sedans and wagons. If you have extended lowers- then you need the extended uppers as well. If you have extended uppers/lowers and had a vibration you need a longer driveshaft.

TheGraniteSS wrote:

The lower rear trailing arms are different for sedans and wagons.

Aaaaaa no!

Ok, so then why can't we just use b-body sedan rear sway bars on a wagon? Are the arms the same length just different angle for the difference in axle width?

The upper AND lower control arms are exactly the same. The wagon axle and chassis are about 4" wider than the sedan axle. So the forward mounting points on the chassis are wider. And to maintain the correct angle, the mounts on the axle are similarly wider. This is also the reason the sedan sway bar is not a direct fit on the wagons.

Ok, I assumed(I know the saying) the arms were different because of the axle width. Thanks for the clarification.

No problemo

So the 1305 Hotckis lower trailing arms should work on the wagon.