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Old 01-25-2018, 07:29 AM   #1
Great Lakes Greg
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Default AA Transmission

Screwy question; has anybody tried to put an AA trans into a passenger car frame? Creeper gear in a sedan would probably be useless, but interesting.
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Old 01-25-2018, 07:32 AM   #2
SeaSlugs
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Default Re: AA Transmission

ive heard of them being in the standard A pickup so its possible to put in a car
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Old 01-25-2018, 09:41 AM   #3
Johnnydidd
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Default Re: AA Transmission

you will need to change bell housing also
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Old 01-25-2018, 10:01 AM   #4
40 Deluxe
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Default Re: AA Transmission

It should be a great parade car! You can keep the RPM up a little to keep the battery charged after all the Ah-ooga's.
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Old 01-25-2018, 11:36 AM   #5
Purdy Swoft
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Default Re: AA Transmission

Its been done . Ford may have offered some that way . The four speed is heavy and can speed up sagging of the frame at the rear motor mounts . Reverse is just as creepy as first gear or double low .
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Old 01-25-2018, 11:36 AM   #6
Fullraceflathead
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Default Re: AA Transmission

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It's Ideal for Parades.
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Old 01-25-2018, 11:46 AM   #7
Bob C
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Default Re: AA Transmission

Starting in mid 1931 you could get a 4 speed in the Model A from Ford.
See the link to Vince's site. http://www.fordgarage.com/pages/aafourspeedachassis.htm

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Old 01-25-2018, 01:02 PM   #8
1955cj5
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Default Re: AA Transmission

Here are some pictures of the two transmissions and clutch housings side by side.

The 4-speed is considerably larger and heavier.

The u-joint is also different as the output shaft of the 4-speed is larger than the 3-speed. So you have one end with a large spline and the other end has the smaller A spline to mate with the drive shaft.

The last picture shows the different clutch housings.

1st gear is really low. Great for loading onto trailers and parades but for the most part I'd start out in 2nd for normal driving.

I replaced it with a 3-speed.
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Last edited by 1955cj5; 01-25-2018 at 07:07 PM.
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Old 01-25-2018, 06:54 PM   #9
ed thibodeau
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Default Re: AA Transmission

My june 31 PU has the 4 speed and when I got it I just thought that somebody had got one out of a junk yard and put it in, but then George DeAngelis showed me a photo of the assembly line with a pickup and on the firewall was chalked 4 speed.
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Old 01-26-2018, 08:05 PM   #10
modelAsteve
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Default Re: AA Transmission

I have one in my '30 pu. You need the AA bell housing, rear bearing retainer and u-joint.
My truck idles up my steep driveway. Was a bulletin in June 1930 I believe. Almost useless but fun!
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