I was questioning if my 63 was shifting into 4th , so I installed a tach and don't notice a 3-4 shift. Cruising at 70 the RPM is at 2600. Sounds high. Has anyone noted RPM's at highway speeds?. I have 235/75/15s and stock gears for an A/C car. I think 3:21s.
Seems about right according to the RPM calculator.
Thank you Kurt, Because my trany was only shifting twice I assumed it was not shifting into 4th. However, upon further diagnosis, the trany is skipping 2nd gear. When in Low, it attempt to shift but the tachometer does not drop. The service manual has a great diagnosis section for the trany. apparently I have a stuck valve it the valve body.