Quote:
Maybe John K. can explain how the rear servo releasing the rear band is connected to the front servo applying the band , if the 2 are connected , or mutually exclusive of each other ?
When a manual 1-2 shift is initiated the manual valve shuts off fluid pressure to the rear servo but the spring pressure returning the piston makes the servo a momentary de facto pump and the pressure it exerts on the 1-2 shift valve delays the actual upshift.
Mopar realized this after a several years and a redesigned 1-2 shift valve (3410886) was introduced in '70 but there can still be some delay because of the channel size in the transfer plate. Some transfer plates have a deeper channel which speeds return flow.
The heavy rear servo return spring included in the TF-2 kit (OP didn't state which TransGo kit he had) helps reduce the lag as will drilling a small hole in the rear servo piston. (I use a #40 drill)
The INTERNET, the MISinformation superhighway
| 
