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Topic Review (Newest First)
11-25-2006 09:40 PM
DMAYS@TRIAD.RR.COM rick6160,

Could be a suspension issue? Have you checked alignment or other things such as sway bar, tie rod ends, or steering box.
Wheel bearings also could cause this. Good luck.
11-25-2006 09:23 PM
JohnTN Have you checked the angles of your transmission output yoke, driveshaft, and pinion yoke? Use an angle gauge with a 360 degree dial available at Home Depot or Lowes for $10 and do a search on "pinion angle".

John
11-25-2006 09:16 PM
scholman rick6160,

It sounds to me like an alignment problem. The output shaft of the transmission must be parallel to the pinion shaft on the rear end. If they are pointing straight at each other there will be a problem. You need to take the drive line out. Then put an adjustable protractor on the rear end yoke where the U-joints would be attached. Write this reading down. Then do the same on the output shaft of the transmission. The rear pinion should be pointing down and the transmission should be pointing parallel to the ground. Then when the rear end "twists" up under acceleration these two shafts stay aligned with each other. If they do not then you get the vibration you are speaking of.

Good Hunting
Scholman
11-25-2006 08:10 PM
poncho62 moving to General Rodding Tech.
11-25-2006 06:56 PM
rick6160
vibration

I have a 1970 Chevy Nova, 350 CU IN 4 speed. The car starts to vibrate when you hit about 60 MPH. Nothing real bad but enough to bug you. It does not go away or get worse by going faster. I have put on brand new tires, and a new drive shaft. These two items did help but did not eliminate the problem. also if I am going over 60 and push in the clutch it does not cut down on the vibration so I don't think it is in the engine. Any Thoughts??
Thank you
Rick

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