Vibration
Thread Starter
Racer
Joined: Sep 2004
Posts: 323
Likes: 1
From: Muncie Indiana
Vibration
I have a 93 LT1 my question is this. I have a vibration between 40 and 47 MPH that is very noticible. Above this speed the drive train smooths out. It seems more noticeable when the air compressor is running. The car is much smoother on cold days when only the heat is running. I have also noticed that it seems to be RPM sensitive from around 1000 to 1100 RPM's. Did the general put a harmonic balancer or something like it on the compressor or the crank?? 
Burning Brakes
Joined: Nov 2001
Posts: 812
Likes: 1
From: Sherman Texas
So have you done any mods or repairs to the rotating assembly lately? I have heard of several issues involving higher mileage and the stock balancer causing some vibration.. Mine has a similiar problem, but I am hoping to get my new engine built soon, then I'll have a balanced rotating assembly..
Thread Starter
Racer
Joined: Sep 2004
Posts: 323
Likes: 1
From: Muncie Indiana
Mods
Originally Posted by thmupr
So have you done any mods or repairs to the rotating assembly lately? I have heard of several issues involving higher mileage and the stock balancer causing some vibration.. Mine has a similiar problem, but I am hoping to get my new engine built soon, then I'll have a balanced rotating assembly..
Milage 71K
Last edited by John Robinson; Nov 29, 2004 at 11:46 AM. Reason: Additional Information
