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Old 10-07-2010, 07:15 PM   #9
Jim Parker Toronto
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Join Date: May 2010
Location: Toronto, Ontario, Canada
Posts: 1,289
Default Re: overdrive transmissions

Here's some info I got for mine, I think it was from modeladave's (not sure)

Overdrive Transmission:
The Overdrive transmission 1928-1931, 1935-1939 is a unique, fully-synchronized, transmissions for the Model "A" and early V8. It has the overdrive built inside the case. There are no extra leavers, cables, or electric switches involved.
The drop in conversion kit that I manufacture has all parts necessary for a drop in installation. No special tools are required.
There are 4 different ratios:
.......................1..... 2 ...... 3 .......4
Gear Ratios...1st - 3.01.... 3.25 .... 3.25 .....3.01
.....................2nd - 1.78 ....1.92 ....1.92 ... 1.78
......................3rd - 1.00 ....1.00.... 1.00 ....1.00
....................O.D. - 0.72 ....0.71 ....0.78 ....0.79
....................Rev - 3.01 ..... 3.25 ....3.25 ....3.01



1984-1987 Ford light duty top shifter. It is a three speed with the fourth being overdrive and all gears are synchro in forward direction. Believe it is Tremac transmission. I also believe that you want the one with the long tailshaft. Also believe that there were a couple or three ratios of that transmission offered. You should be looking for a TOD (top shifter, overdrive), T170FT (code-RTS).

Last edited by Jim Parker Toronto; 10-07-2010 at 07:30 PM. Reason: alignment of numbers, Won"t stay where I put them, done it twice, sorry
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