Re: GM transmission and push button shift.
Posted by HH56 On 2023/8/21 9:56:21
Quote:
Maybe and a new finger layout has been brought up before but I think there might be more involved which needs some consideration. That other stuff is the reason I was curious if anyone actually thinking of buying a kit had approached Bendtsen.
Ross made a good point in that the Packard actuator is not the most reliable piece of engineering Packard ever came up with and those of us who have the PB shift know the motor is not the strongest and can be an issue when it comes to pulling the trans out of park in some situations. No idea if motor strength would be an issue with GM trans.
Another question even if a new finger layout could be made might be how the modified actuator would attach to the GM trans. On the Ultra the actuator slides directly over the selector valve shaft and a setscrew tightens down to position and hold it on the shaft and trans. The heavy shaft is the primary method of support with a small straight bar bolted between the trans and actuator only there to prevent weight of the motor or the motor torque from twisting the actuator assy instead of the shaft. Admittedly, I have not seen a GM trans up close but just looking at photos I would wonder if the GM shaft could be made to work or if something would be needed as a transition piece between the trans and actuator. If so, is there enough room before hitting the body or frame to bring the actuator away from the trans to accommodate a transition piece plus any other attaching means needed to bolt the actuator to the trans.
The RR and the PCS actuator bolt to the trans case with RR at the rear using a lever and rod arrangement or PCS appearing to bolt to the opposite side and using a push-pull cable to make the connection. With the Packard X frame and close body am wondering if something directly on the shaft or even like the RR would be possible if a Packard actuator could be modified.
Attach file:
700r4-transmission-non-super-duty.jpg (28.99 KB)
rr assy.jpg (180.13 KB)
PCS actuator.jpg (74.74 KB)
I'm with Ross on this one. I think the easiest way to adapt the pushbuttons on the 56 to the GM trans would be to create a new contact plate within the shift motor.
Maybe and a new finger layout has been brought up before but I think there might be more involved which needs some consideration. That other stuff is the reason I was curious if anyone actually thinking of buying a kit had approached Bendtsen.
Ross made a good point in that the Packard actuator is not the most reliable piece of engineering Packard ever came up with and those of us who have the PB shift know the motor is not the strongest and can be an issue when it comes to pulling the trans out of park in some situations. No idea if motor strength would be an issue with GM trans.
Another question even if a new finger layout could be made might be how the modified actuator would attach to the GM trans. On the Ultra the actuator slides directly over the selector valve shaft and a setscrew tightens down to position and hold it on the shaft and trans. The heavy shaft is the primary method of support with a small straight bar bolted between the trans and actuator only there to prevent weight of the motor or the motor torque from twisting the actuator assy instead of the shaft. Admittedly, I have not seen a GM trans up close but just looking at photos I would wonder if the GM shaft could be made to work or if something would be needed as a transition piece between the trans and actuator. If so, is there enough room before hitting the body or frame to bring the actuator away from the trans to accommodate a transition piece plus any other attaching means needed to bolt the actuator to the trans.
The RR and the PCS actuator bolt to the trans case with RR at the rear using a lever and rod arrangement or PCS appearing to bolt to the opposite side and using a push-pull cable to make the connection. With the Packard X frame and close body am wondering if something directly on the shaft or even like the RR would be possible if a Packard actuator could be modified.
Attach file:
700r4-transmission-non-super-duty.jpg (28.99 KB) rr assy.jpg (180.13 KB)
PCS actuator.jpg (74.74 KB)
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