The Ford Barn

Fullraceflathead · 03-03-2015, 12:58 AM

I have a 1928 Roadster Pickup that was retrofitted with the AA 4 Speed Transmission many years ago. The Transmission has a casting date code 2-13-31 on it. Obviously an early one with the shifter cap with out threads.
This shifter is very sloppy and needs to be rebuilt soon by me.
I acquired a later BB 4 speed Transmission that's near perfect condition with the later threaded shifter cap. The case has no date code that I can see. I know the BB Case doesn't have the boss for the pedals shaft.
What I want to know is can I use the near perfect Transmission shifter assembly along with the top of the case and swap it out for my old early one?
I would think they can be swapped from transmission to transmission like the standard Model A 3 Speeds can.
I would like to do this rather than completely swap out all of the gears to be able to use the AA Case for the Boss for the Pedals.
Thanks!

Kurt in NJ · 03-03-2015, 10:30 AM

My 28-37 parts book lists the shift tower the same 29-37---a lot of the 4 speed parts were used into the 50s ---there may be some different parts, but the assembly should fit

SteveB31 · 03-03-2015, 09:30 PM

Sponsored Links (Register now to hide all advertisements)

Yes. It is a Borg Warner transmission and the shift tops are interchangable. They had many issues with the early 4 speed tops, and refined (redesigned) them several times in the following 40 years.

03-03-2015, 12:58 AM	#1
Fullraceflathead Senior Member Join Date: May 2012 Location: Chillicothe, Missouri Posts: 1,176	AA 4 Speed Transmission Shifters. I have a 1928 Roadster Pickup that was retrofitted with the AA 4 Speed Transmission many years ago. The Transmission has a casting date code 2-13-31 on it. Obviously an early one with the shifter cap with out threads. This shifter is very sloppy and needs to be rebuilt soon by me. I acquired a later BB 4 speed Transmission that's near perfect condition with the later threaded shifter cap. The case has no date code that I can see. I know the BB Case doesn't have the boss for the pedals shaft. What I want to know is can I use the near perfect Transmission shifter assembly along with the top of the case and swap it out for my old early one? I would think they can be swapped from transmission to transmission like the standard Model A 3 Speeds can. I would like to do this rather than completely swap out all of the gears to be able to use the AA Case for the Boss for the Pedals. Thanks! __________________ "If I asked people what they wanted they would have said faster horses." -Henry Ford "Primitive technology is not a design flaw" 1928 Ford Model A Roadster Pickup 1930 Gordon Smith Air Compressor 1941 Willy's Pickup 1960 Thunderbird-For Sale 1964 Buick Riviera 2x4 425 1965 Pontiac GTO, 455 Super Duty 2004 Dodge Ram SRT-10, V-10 Viper 1977 Charger Jet Boat,460 Ford,Jacuzzi Jet Front Engine Nostalgia Dragster,Supercharged 296 "Fullrace Flathead" Ford Engine Build up on DVD ask

03-03-2015, 10:30 AM	#2
Kurt in NJ Senior Member Join Date: May 2010 Location: on the Littlefield Posts: 6,159	Re: AA 4 Speed Transmission Shifters. My 28-37 parts book lists the shift tower the same 29-37---a lot of the 4 speed parts were used into the 50s ---there may be some different parts, but the assembly should fit

03-03-2015, 09:30 PM	#3
SteveB31 Senior Member Join Date: May 2010 Location: Englewood, Colorado Posts: 1,372	Re: AA 4 Speed Transmission Shifters. Sponsored Links (Register now to hide all advertisements) Yes. It is a Borg Warner transmission and the shift tops are interchangable. They had many issues with the early 4 speed tops, and refined (redesigned) them several times in the following 40 years.