48 Chevy Pickup Wont shift into gear

[maxwedge]

Originally Posted by weltertm

The manual says that it is synchromesh action in 2,3,4, gears. Are you talking about the 2 sliders that fit into separate gears that have a groove around the circumference?

Yes, but the manual answered the question, only 1st has no synchro, so the car must be stopped and the clutch/inputshaft fully disengaged to get it into first.

[weltertm]

Yes when I disengage the clutch, the pressure plate separates from the clutch. I can slide the clutch away from the flywheel. but when it is running, the input shaft is still spinning. I am going to go try to spin the drive shaft when the clutch is disengaged. Just dont know why it shifts when on jacks but not when on the ground. Seems like something is binding. there is no noise when it is running.

[maxwedge]

Originally Posted by weltertm

Yes when I disengage the clutch, the pressure plate separates from the clutch. I can slide the clutch away from the flywheel. but when it is running, the input shaft is still spinning. I am going to go try to spin the drive shaft when the clutch is disengaged. Just dont know why it shifts when on jacks but not when on the ground. Seems like something is binding. there is no noise when it is running.

On the jacks you have freewheeling components in the trans allowing the shifts, on the ground these components no longer turn blocking engagement, issue is the input shaft turning, focus on that.