I daily my 63 Chevy Belair Wagon. Transmission is the original GM Two-speed Powerglide with (I believe) the original (13?)-inch torque converter.
Here are my issues:
- Car lurches hard and knocks when put in gear.
- Reluctant to shift out of first until it has been driven a few miles.
- While coming to a stop, loud knock on downshift.
- There is also a strong oscillating vibration that begins around 45 mph and only increases in frequency with the position of the throttle.
Note: the vibration does not change linearly to the RPM or velocity of the car, ONLY the position of the gas pedal/throttle (i.e. with the gas pedal depressed slightly the vibration goes: "vrumm... vrumm..." With the gas pedal depressed further the vibration increases in rate: "vrum.. vrum.. vrum.. vrum").
I'm hoping this is just an issue with the torque converter but any insights will help.