unioncarpenter84

iTrader: (22)

i balanced my driveshaft and new u joints. do u think the damper could be bad??

ThoR294

iTrader: (6)

If its balanced, its balanced. I put an LS1 D/S in my car and still had the vibration

unioncarpenter84

iTrader: (22)

but if the damper isnt absorbing anything vibration?

do u still have the vibration??

mines right at the console it shakes at 70 mph.


my pinon angle is set at 1.5

ThoR294

iTrader: (6)

move your pinion angle and see if it changes.

unioncarpenter84

iTrader: (22)

I did nothing gunna try different drive shaft i guess

ThoR294

iTrader: (6)

you move it both up and down from the current position?

unioncarpenter84

iTrader: (22)

both ways and still no luck

ThoR294

iTrader: (6)

Not sure then man if youve done everything I have lol

unioncarpenter84

iTrader: (22)

Problem solved got a 1 le driveshaft. smooth as can be now besides noisy tq arm

ThoR294

iTrader: (6)

I thought you got your D/S balanced? :O

unioncarpenter84

iTrader: (22)

i did and got new u joints installed also. but put the 1le shaft in and problem solved.


what kinda shaft do u got

ThoR294

iTrader: (6)

stock steel D/S that was balanced. I also used an alumn d/s out of a 2000 camaro with new U joints. I am looking into a PST shaft at some point

unioncarpenter84

iTrader: (22)

Ya I have very little now. Now just gotta deal with the umi tq arm making noise and clunking

ThoR294

iTrader: (6)

I stand corrected... we do have a damper on the front of our driveshafts... (1 piece)

J.C.

iTrader: (1)

That sucks. I had the same problem but completely forgot how I fixed it.

ThoR294

iTrader: (6)

I am doing LS1 front brakes in a few weeks... I am going to measure my D/S and get a custom one made, and I got another digital angle finder and fine tune it again...

unioncarpenter84

iTrader: (22)

just buy a 1 le driveshaft

ThoR294

iTrader: (6)

Finally figured it out. I bought this angle finder:


I re-installed my poly transmission mount. Transmission was pointing down 3 degrees. I set the rear to point UP 2.65-2.75 degrees. Vibration is now GONE. I have a slight vibration at 90mph.... but that is probably from everything being solid, and it is NO WHERE NEAR as bad as it used to be. THANK GOD I can't believe it took me this long to do this research and figure out how to properly set the angle. I was just setting the rear before *sigh*

97 CAIVIAROSS

iTrader: (8)

Thor,

Glad to hear you finally got it. I have the same problem! I am going to install my 12 bolt first. I have an ls1 driveshaft that has also balanced. I will order the digital angle finder. How did you exactly measure for the pinion angle?

Derek

ThoR294

iTrader: (6)

for transmission angle, measure there


for rear end angle

https://ls1tech.com/forums/17333728-post22.html

trans was hardest because it was aluminum so i had to physically hold the gauge there haha.