There is one (1) choice of manual transmission for the early Rambler six: the Borg Warner T-96, described elsewhere. Though reliable enough if you do not abuse it (by 1960 standards, keep in mind) it's fairly terrible overall. (The overdrive model has it's own virtues however.) The T-14 will fit the bellhousing and clutch, and is not a bad transmission at all -- "late model" (OK, 1968) and synchromesh in all gears. But for the effort involved in fabricating a driveshaft, there's no real gain substituting one hard-to-find part for another.
The Borg Warner T-5 however is common as hell, has been in production for 20 years, and is an easy junkyard find, and has a huge aftermarket. Five forward speeds, 5th is overdrive. It's a wildly popular transmission to swap, and has lots of specs available.
Most people are worried about exceeding torque specs with the various models but that's not a problem behind a Nash six, so we get a bigger range of choices. See this Ford Muscle Community T-5 identification chart for an overview and specs.
Random notes to assemble into a page.
| T-96 | T-5 short | T-5 mid | 1994-up T-5 | |
| input shaft length | 7.0 (measured) | 7.18 | 7.41 | 7.85 |
| (adapter thickness) | n/a | .18 | .41 | .85 |
| bearing retainer major diam | 4.25 | 4.91 | 4.91 | 4.91 |
| splines | 10 x 15/16" | 10 x 1-1/16" | 10 x 1-1/16" | 10 x 1-1/16" |
| pilot bush | .746 | ? | ? |
RESOURCES
Ford T5 specs (this donor)
http://www.ttcautomotive.com/English/products/T-5.asp
GM T5 specs (just fyi)
http://www.adchevy.com/techtips/t5list/
Mustang Depot adapter, looks best so far
part MD-401-2103
http://www.mustangdepot.com/OnLineCatalog/Transmission/t5-conversion.htm
64 american with v8, has good info though
http://schwallers.com/T5Swap.htm
bearing retainer:
schwaller on AMCforum re: bearing retainer issues and steel replacement from "4wd Hardware"
http://theamcforum.com/forum/t5-swap_topic10579_page4.html
Part Number: OAI18885.02
* 1982-86 CJ
http://www.4wd.com/productdetails.aspx?partID=11159
"T4/T5 Bearing Retainer" $36
See photo http://cars.grantskingdom.com/gallery/main.php?g2_view=core.DownloadItem&g2_itemId=2135&g2_serialNumber=1
"The 1 on the right is the new AMC Jeep T5 retainer, the left 1 is the one off the Ford T5"
it's the base, not the tube, that interferes with TO lever.
See photos on amcforum; it's abundantly obvious if you mock up the parts and the T-96 retainer will not
have this problem shoulder. If it's usable, likely not.
javelin 401 t5, same text as above? but additional info eg. speedo cabpe
http://mysite.verizon.net/amxjavelin/t5swap/t5swap.html
speedo cable: same as AMC t10?
speedo cable: check T150. Ford.
clutch disc: T150 (Ford trans...) has same splines (check diam and splines)
PS: T-5 will drop onto T-150 bell, clutch, etc FWIW
BIG QUESTIONS:
Q: Will T5 hang off mounting ears w/o xmember OK?
A: not a problem, less mass than T-96!
Q: How bad is tunnel clearance
Q: location of output viz. pinion angle
Q: note schwaller page re: bearing retainer issues
Q: Shifter location relative to mounting face
Q: speedo setup?
Q: clutch disc
Q: will 9" clutch clear BH
Q: TO bearing
CalPonyCar adapters
www.calponycar.com
TRA-657-627 6cyl
TRA-650-526
-423 is V8 only