Engine vibration....
Thread Starter
Burning Brakes
Joined: Jul 2000
Posts: 1,045
Likes: 3
Engine vibration....
I have a 79 with a slight vibration above 2500 rpm. The engine is 383 with TPI that was balanced when built. I have replaced the flywheel and clutch with no luck. At highway speed car vibrates until you slip the clutch and the car becomes rock steady. I have put new dampner,pulleys, distrbutor, and all new ignition parts. I removed the belts with no luck. Any ideas where to look next....
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
So your saying that you have this vibration at 2500 in neutral? You said on the road it would straighten out when you slip the clutch.When you press in on the clutch you are forcing the crank forward--too much crank endplay?Did you say you stiill have the vibration at 2500 and all the belts removed?Did you have the flywheel and clutch balanced together?
Melting Slicks
Joined: May 2006
Posts: 2,369
Likes: 103
From: Centerville Louisiana
Mine does the same thing when you stick the clutch smooths out it's most noticable in the rear view mirror mines a L-82 rebuild I'm suspecting something in the drive train ,but I'm putting on a new G.M. damper next week keep me posted on any progress I'll do the same
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Thread Starter
Burning Brakes
Joined: Jul 2000
Posts: 1,045
Likes: 3
I just rerplaced the whole flywheel,clutch disc, pressure plate and roller pilot bushing and the vibration is gone. Dont know what was wrong with the old clutch(300 milws) but it runs smooth now..
