ibanez7

iTrader: (7)

would have posted in here first, however I was thinking the issue was NOT the rearend, now Im lost. I have ruled out everything except the diff.

01 camaro m6, cam, full suspension, full bolt on, strange dana s60 truetrac

Here is the synopsis:
I hit 55+mph, the floorboards, center console, and seats vibrate and shake.
Steering wheel and shifter do not.

When I tried hitting 120MPH
the noise and vibration did get worse as expected, but new variables appeared:
-clunk,clunk, clunk, clunk noise from the rearend area
-noise and vibration goes away when i press the brakes.
-noise and vibration comes back when I release the brakes.
-noise and vibration still there, when I press the clutch or drop the t56 into the neutral gate.

original thread link-
https://ls1tech.com/forums/suspensio...ion-60mph.html

sound like a truetrac issue? or any other ideas?

01ssreda4

iTrader: (96)

Sounds like a DS or torque arm issue to me. Though I didn't read your other thread.

stunna p

iTrader: (4)

Pinion angle........... " But you don't have to take my word for it!
"

ibanez7

iTrader: (7)

DS = Speed inc chromoly with 1350 spice ujoints. checked balance, replaced ujoints, all is good.

TA = spohn adj. subframe mount. All looked good

p/a = -2.5 its what I ran before w/o issue. still at -2.5

thanks for the input

guppymech

iTrader: (7)

When you hit the brakes the rearend/suspension is loaded 'pinion down'. Maybe try adjusting the pinion angle down alittle more. Or look at the torque arm fwd mount for condition and security.

ibanez7

iTrader: (7)

excellent point.

adj, the pinion angle down more then -2.5, Im sure would create more/new vibration.

I get what your say though, and tonight/tomorrow will be more investigation