DODGE 12 valve trans problem.

[whitehoopty]

The truck builds boost in park. does nothing in reverse. then N through 1st it goes forward. i drove it onto the trailer in first and it felt fine in first. What you think it could be?

 

[npe3484]

So all forward gears work fine? You're only missing reverse?

 

[zstroken]

You have welded the rear clutch pack together.

 

[whitehoopty]

ya truck only goes forward...and it builds boost in park. so im guessing the clutch pack is welded together.