engine vibration
iono changed the tranny mount from poly to stock and its driveable now lol all it did was dampin the vibration. i think i know what it is but i gotta pull the trans out i think the flange on the end of the crank might be warped or something so im going to put a indicator on it and see where its at.
The poly mounts do amplify the vibration. Im almost to the point where i think mine has been there for awhile, and when i did the polys it just amplified it. But the initial vibration has to come from somewhere. I ordered a March dampener, i really hope that fixes it. If not ill probably change the trans mount out like you did and see if i can live with it too. Ive lived with it the way it is now for a year now, but it just got to where it wasn't fun to drive anymore. Hope you figure it out.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'
Brett Foote
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Subscribing. I bet its more internal. When I did my clutch I also put in a poly trans and torque arm mount, already had poly engine mounts in. It really amplified the noise/vibration coming from my 10 bolt 
. To the point where I don't even like driving above 60mph. Next mod: Midwest Rear.
Poly trans mount did make it harsh, but it also made the car more stiff and feel less mushy.
Good luck finding it! Junkyard 6.0s are pretty cheap...
. To the point where I don't even like driving above 60mph. Next mod: Midwest Rear. Poly trans mount did make it harsh, but it also made the car more stiff and feel less mushy.
Good luck finding it! Junkyard 6.0s are pretty cheap...
Teching In
Joined: Mar 2010
Posts: 1
Likes: 0
Fix?? I just bought a 2000 Trans Am and I am having the same issue... Did you ever track down where the vibration was coming from?? I have the poly mounts, tourqe are, pan hard, sub frame connectors and everyone is saying that is where my vibration is coming from...
