Quote:
Originally Posted by grivera
My 64 LeMans-
the car has a driveline vibration during acceleration
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The driveshaft spins at the same RPM for a given mile per hour. If the vibration is at 40mph under acceleration but not at 40 mph cruise the driveshaft balance doesn't sound like the problem.
It could be a u-joint that's binding under acceleration. Or it could be a misalignment when the pinion angle changes under acceleration. It has to be something that changes when you accelerate.
If a tire is out of balance it shakes at that speed under acceleration or cruise.