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08-24-2020, 05:22 AM | #1 |
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Overdrive Transmission
I have often wondered why someone never came up with a direct bolt-in synchromesh overdrive transmission for the Model A. With as many different small vehicles I would think some 4 or 5 speed could be modified to directly bolt in place. Is it because everything is too long?
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08-24-2020, 07:46 AM | #2 |
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Re: Overdrive Transmission
Mitchell synchronizes and alters the lower gear ratios in an A transmission and offers a torque tube overdrive..bolt right in.
Everyone has an opinion about when a model a quits being a model a..my personal opinion is when the spur gear transmission is changed. |
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08-24-2020, 08:23 AM | #3 | |
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Re: Overdrive Transmission
Quote:
How about a spur gear transmission (stock) with a Mitchell O/D. Am I still considered a Model A?
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Ruth "Sometimes you really DO need to read the whole thread" Last edited by Ruth; 08-24-2020 at 08:36 AM. |
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08-24-2020, 09:20 AM | #4 |
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Re: Overdrive Transmission
Yes. Even Hot Rods are defined as being A's. B's, etc.
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08-24-2020, 06:11 PM | #5 |
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Re: Overdrive Transmission
I love my spur gears!
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08-24-2020, 10:46 PM | #6 |
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Re: Overdrive Transmission
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08-24-2020, 10:48 PM | #7 |
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Re: Overdrive Transmission
There have been several transmissions that have been adapted as a direct bolt on that do juts what you are asking. In fact, I have one in my MODEL A PICKUP.
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08-25-2020, 04:41 AM | #8 |
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Re: Overdrive Transmission
I am just thinking out loud. I know what all transmission swaps are out there.
When I said bolt-in I meant no changes of the torque tube or anything. Mitchell OD is probably the easiest solution out there, just more than I want to spend. |
08-25-2020, 11:21 AM | #9 |
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Re: Overdrive Transmission
Mitchell also makes a synchronized transmission in an original Model A case
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Alaskan A's Antique Auto Mushers of Alaska Model A Ford Club of America Model A Restorers Club Antique Automobile Club of America Mullins Owner's Club |
08-25-2020, 01:23 PM | #10 | |
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Re: Overdrive Transmission
Quote:
I think if someone were very determined they could design (or modify) a synchromesh overdrive gear train that would fit into a AA 4 speed transmission case. Which, with the AA bell housing and special rear bearing retainer, would drop right into a Model A passenger car. Of course, adapting the RTS or even T5 is a far easier feat than designing and then manufacturing a complete gear train. |
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