Vibration on a 1970 lt1
Melting Slicks
Joined: Oct 2001
Posts: 2,065
Likes: 1,395
From: Halifax, Nova Scotia, Canada
Not sure who the "Tsk, Tsk" is for, however I'll give some detail to my response.
If the vibration is happening under load and NOT when light throttle cruise, then It could be the harmonic balancer. How do I know, that's what mine did. After balancing everything in the drive line, I swapped out the harmonic balancer, and the vibration was completely gone.
If your vibration is at a specific mph/rpm under light load, and depressing the clutch does nothing to correct it, then U joints, etc maybe the problem.
If at speed of the vibration and it goes away when depressing the clutch and engine at idle, then the problem is within the engine.
Hope this helps.
If the vibration is happening under load and NOT when light throttle cruise, then It could be the harmonic balancer. How do I know, that's what mine did. After balancing everything in the drive line, I swapped out the harmonic balancer, and the vibration was completely gone.
If your vibration is at a specific mph/rpm under light load, and depressing the clutch does nothing to correct it, then U joints, etc maybe the problem.
If at speed of the vibration and it goes away when depressing the clutch and engine at idle, then the problem is within the engine.
Hope this helps.
Last edited by Barry's70LT1; Sep 2, 2022 at 11:03 PM.
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