383camaroz28

iTrader: (22)

Well just got my car on the road after cam swap. Put everything on at once (adj lca, adj phr, koni 4/3 strano springs, moser 12 bolt) when i hit a bump hard sounds like the wheels are gonna come threw the floor. Also im geting a weird pulse after 12 bolt install. I have a alum stock ds out of a m6 an i have a 4l60e. Are they the same?

Any help would help

salemetro

iTrader: (5)

It appears that the DS should be the same....according to my listings. One thing though....based on your specs listed in your sig, I would not run a factory aluminum DS. I think you're at the point where it's time to upgrade to a good aftermarket unit......or risk twisting the stock one. Others here might have different suggestions?

Greekey

iTrader: (3)

Our stock drive shafts cant even hold stock power. I've seen them go on stock cars.

383camaroz28

iTrader: (22)

Ya i was thinking of getting a pst alum one.

But what would make the tire sound like there coming threw floor? Im gotta stiffen up the shocks, see if any change

lefty2023

I put some roto joint lca and a phr from umi on my stock 01 ss this past spring and there is a lot more road noise than stock, especially when I hit a bump or go over railroa
d tracks.

lefty2023

I put some lca and phr on my stock 01 ss this past spring. The car makes a lot more road noise, especially when I hit a bump or go over train tracks, I can be kinda jarring

JD_AMG

What kind of condition are your bump stops in? What kind of wheels tires are you running and what pressure are the tires at? Do you think you could have tire contact with the wheel well or fender?
Are your LCA's rod ended?

ABJ88

iTrader: (3)

As far as the road noise, I did the same mods as you & I'm going through the same thing. I did sone research on here and everyone suggest to tighten the control arm bolts more, apparently they need to be real tight and are known to loosen up. So I'm going to get back under and do so and add some thread locker.

salemetro

iTrader: (5)

How'd ya manage that? I've got LCA Roto-joints on order from UMI right now....AFIK, they are not even available yet.

lefty2023

Not sure, I got them at the speed inc open house in the spring. Only one side is a roto joint nit both

383camaroz28

iTrader: (22)

Poly/rod
Goodyear gs 275/40/27 at 40psi on 01-02 ws6 rims

Bumpstops are brand new

Id say wheel well

383camaroz28

iTrader: (22)

Poly/rod
Goodyear gs 275/40/27 at 40psi on 01-02 ws6 rims

Bumpstops are brand new

Id say wheel well

383camaroz28

iTrader: (22)

Okay looking under the car i found a swaybar link on wrong. Fix one noise

I needa fill my lca phr bushings with grease tonight

An what are the chances my over axel exhaust an slaming the body?

JD_AMG

For starters your tires should be around 30psi, 40psi is way too high and will feel more like driving on bowling *****.
What kind of bump stops are they? GM replacement or something else? (are they WS6/SS stops and are you using the metal spacer with them?)
Are your fenders rolled? And did you adjust the panhard bar to center the rear end?

Your exhaust certainly could be hitting the body, or the just the axle, get under there and look for marks.

Chrismikeb

iTrader: (2)

could be hitting the axel like he said, or like mine...its sitting on the rear cross bar (dont know what the technical name is) and i hear literally every single bump, good exhaust work right there..

383camaroz28

iTrader: (22)

kk ill put em to 30,

i did see some scrap marks on over axel piece of exhaust