Actually, I am in the process of parts gathering for a Mummert T-5 conversion in the 57 Bird Fordomatic. Have all the clutch stuff: bellhousing, clutch linkages and brackets, brake/clutch pedal assembly and underdash mounting brace, steering column covers, etc. So I am just curious how/if a 3 speed OD could be made more livable and strong enough to deal with the new aluminum heads, cam, etc. 5 forward gears all synchro is my choice for now.

57 Black Tbird 312/auto

As I stated orginaly it is a T 85. The heavy duty with the curved bottom side cover. This particular one came out of a 1959 or 1960 T Bird in a junk yard in the mid to late '60's. It bolted right in my '57 T Bird.  Had to switch the clutch disk to match the splines on the input shaft. Contrary to  what has been stated here the drive shaft yolk that originaly came in my car with the Ford A Matic fit just fine as I recall. I don't have a price set. I am trying to find a fair price. As I stated I know they don't come cheap but I would like to find a new home for it with someone who needs it and give someone a fair deal.  Regarding the comment on the all syncro 3 speeds, the 352 and 390 cars from '63 up had the heavy duty version. It is basicly a toploader 4 speed with only 3 speeds. I have one in the Bird now but it needs syncros and I want a 4 speed because I want a 4 speed. I am thinking I would take $500 + shipping considering I have a bunch of misc spare parts with it. Could probably throw in the correct clutch disk if I can find it. I think it has fine splines. If I am too high on the price and you are interested, insult me with an offer.

Regarding the Borg Warner T-85 with an R-11 overdrive behind it . . .

Borg-Warner built OD units that used either 3 or 4 planetary gears. The 4 gear system is the strongest. It was identified as an R-11 unit.



These T-85/R-11 transmissions are strong enough that they were used behind the most powerful FE engines. Overdrive was offered behind the factory high performance 390s and 406s in 1961-2 and the mighty 427 of 1963-4. After the 4 speed became available in 1962 request for the OD transmission declined but it did function just as intended by taming the very low rear end ratios that were commonly installed in high-performance cars.



Thought this might answer your strength question.

NoShortcuts
a.k.a. Charlie Brown
near Syracuse, New York

I believe you have it right. These were tough and designed for high horsepower and high torqe.

The overdrive is still for sale. Will take $400 plus shipping. Need cash for my T-Bird re do.

Slumlord

I sent you a PM.

Missouri Mike

I'd rather be lucky than good.................

    but good ain't bad!!

Returned pm. Email me. Still have it.

Didn't get your PM, sent an email.We'll see if that works.

Mike

I'd rather be lucky than good.................

    but good ain't bad!!

Never got email. slumlord44@hotmail.com.

Did you get my email at your hotmail address?

Mike

I'd rather be lucky than good.................

    but good ain't bad!!