Any performance upgrades for Pushbutton trans with F&R pumps ?

[rustytoolss]

Just wondering if there are any low buck performance upgrades that can be done to my 1962 PB trans (which has both Front and Rear pumps) ? Things like larger drums, 4 gear planetary etc...or does the fact of 2 pumps just make most interal updates not possible ? I have a book about 727 upgrades, but there in not much information about the units with 2 pumps.

 

[fullmetaljacket]

Just wondering if there are any low buck performance upgrades that can be done to my 1962 PB trans (which has both Front and Rear pumps) ? Things like larger drums, 4 gear planetary etc...or does the fact of 2 pumps just make most interal updates not possible ? I have a book about 727 upgrades, but there in not much information about the units with 2 pumps.

I can tell you that there are many upgrades to these transmissions. Mine has a later input shaft for more strength and more converter choices as well as a little known trick of having 6 or more clutch packs on the rear because of that rear pump. Makes for an awesome 3rd gear charge down the track.

 

[rustytoolss]

I can tell you that there are many upgrades to these transmissions. Mine has a later input shaft for more strength and more converter choices as well as a little known trick of having 6 or more clutch packs on the rear because of that rear pump. Makes for an awesome 3rd gear charge down the track.

Good friend had a transmission shop ( he passed in 2020) . I remember him saying early front pumps have a narrow pump bushing, and that a later pump with a wide bushing might be possible..and you would have to get a converter with 24 splines. I have a core 727 from like 1969 -1971 ( the core tranny has the part throttle downshift valve..which would not work on my PB 727) don't know if any parts from the core would be useable as upgrade parts.

 

[493 Mike]

I would recommend that you PM DVW. He is a expert Torqueflite man and not too far away (Detroit area).
Mike

 

[Outsider]

For street, and keeping the stock converter? If so, an inexpensive Transgo shift kit and good quality master rebuild kit will make a notable seat of the pants improvement with no significant hard part changes. Easily good for 450 hp or so.