The Stovebolt Page Forums Home | FAQ | Forum | Swap Meet | Gallery | Tech Tips | Links | Events | Features | Search | Hoo-Ya Shop
Stovebolt Supporter!
Indianapolis

Fabrications

Talk to Randy Domeck

See what they

can do

for you
!


Stovebolt Site Search
 
Old Truck Calendars
Months of truck photos!
Nothing like an old truck calendar

Stovebolt Calendars

Some New
Some Vintage
Many in Production

Check for details!

Will be updating all year around!


Who's Online Now
33 registered members (DougR, 55 SHAKER, canuck49, DennisM, 2 invisible), 411 guests, and 4 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums48
Topics107,206
Posts838,515
Members39,880
Most Online940
Apr 5th, 2017
Today's Birthdays
53ChevHotRod, dmtk2007, foolonthehill, MLT, Niedermair, Perry Dean, Redd GMC, Rick Paul, wizard 49
Image Posting Policy
Previous Thread
Next Thread
Print Thread
Page 1 of 2 1 2
#68320 - Wed Nov 08 2006 03:01 AM T85N Borg Warner Manual 3 speed Overdrive Transmission  
50Tiger  Offline
Junior Member
Joined: Nov 2006
Posts: 8
Kite, Georgia
Hello/Greetings to all the truck guru's out there

I need information on the old 55-63 chevy Borg Warner electric overdrive transmissions(T85N)! They are great swaps because they are the exact length of the stock transmissions in the trucks of those years. I have run across several at swap meets, but have not bought one because I can't find anyplace that has parts for them, nor can I find anyone to work on them! HELP!



#68321 - Wed Nov 08 2006 03:27 AM Re: T85N Borg Warner Manual 3 speed Overdrive Transmission  
Oly  Offline
Cruising in the Passing Lane
Joined: Mar 2001
Posts: 2,859
Camas Valley, Oregon, USA
Everything you might want is probably here- Borg-Warner T85N


Oly in Oregon

Rest in Peace

1945 GMC COE Victory Truck
1953 Willys CJ3B
1955 Chevy 1st series 3/4-ton
1958 WIFE Last series

Never say "Whoa" in a mud hole

#68322 - Fri Nov 10 2006 04:31 AM Re: T85N Borg Warner Manual 3 speed Overdrive Transmission  
rfs56trk  Offline
Shop Shark
Joined: Apr 2005
Posts: 1,699
Seal Beach, CA
My recommendation is to get one and everything will take care of itself. These OD units are the best kept secret for the older trucks. I have built and installed dozens of them over the last 30 years. Parts are still available you just have to root them out. I just set one up this week using electrical components available from Napa.
Fred


#68323 - Fri Nov 10 2006 10:07 PM Re: T85N Borg Warner Manual 3 speed Overdrive Transmission  
Geargeek  Offline
Junior Member
Joined: Sep 2006
Posts: 37
San Bernardino,Ca
This is my first post,I just purchased a 3 speed overdrive trans with a four prong carb switch, overdrive cable (it says it on the handle) minus the wiring harness and carb bracket for 300.00 U.S. dollars I intend on installing it on my 57 3100 chevy truck which has the original 235 with 3 on the tree. What needs to be done ?? will I have to shorten the drive shaft or how does it get current for the selinoid to work ?? Im totally clueless. I live in Southern Cal if there are any fellow stovebolters out here that can help me with the install i will galdly compensate them for their time. Thanks again for all the knowledge, I love this site , Ed


Those who fail to plan, plan to fail....

#68324 - Sat Nov 11 2006 04:56 AM Re: T85N Borg Warner Manual 3 speed Overdrive Transmission  
50Tiger  Offline
Junior Member
Joined: Nov 2006
Posts: 8
Kite, Georgia
Ed,

If you have a T85N, it is the identical length as your original trans. No driveshaft problems. I can usually swap them in and out in less than an hour. The large post on the solenoid is your power, and the small one is the ground that runs over to the governor. It is supposed to ground the curcuit at about 27mph. I ground the governor because I only run the overdive on the highway and interstate, and that's where I spend most of my time. I don't use a harness, just a toggle switch. I have 35 inch tires on my 57 chevy and a 3.90 rear gear. I can run about 70mph at 1500rpm. I can almost afford to drive it now!!! Well at least I could before the planetary set came apart!! Thats why I was asking for help locating parts to fix it. It actually took round planetary gears a made them straight!! Bad transmission!! If I can figure the picture thing out, I'll show pics.

Oly has listed a great site about wiring and rebuilding the trans! Thanks!

I hope rfs56trk can come up with actuall shops that can get me some parts to fix this thing. I guess the other way to go is buy another one for parts, but my luck will have the planetary gears bad in it too!
Thanks for the info so far, guys!!
Brad


#68325 - Sat Nov 11 2006 05:24 AM Re: T85N Borg Warner Manual 3 speed Overdrive Transmission  
LONGBOX55  Offline
Master Gabster
Joined: May 2006
Posts: 9,470
DANVILLE IL
Welcome Ed. I got your E-mail on this tranny. The one in my truck was retro fitted, not factory. I beleive what you have is the SM318 w/the borg-Warner overdrive. This trans is a direct bolt in. I'd suggest that you use a premade wire harness to save the wireing headaches. The harness is being reproduced for the v8 models, but it will work fine with the 6. I also added a separate switch to shut the power off to it when not in use to save stress/wear on the electricals. I really can't give a feul milege for mine, as the engine isn't stock and my milege isn't real good to begin with. I can tell you that the o/d is a real joy on the open roads. I cruise at 75mph easily only turning about 1900 rpm. That's with a 30" tire and 3.90 rear gears. Some of the parts are hard to come by, but most of the primary trans parts are the same as the standard 3 speed. here is a link to the '55 manual showing how it hooks up. http://chevy.tocmp.com/1955truck2shop/55ctsm0715.htm


Bill Burmeister

#68326 - Sat Nov 11 2006 06:12 AM Re: T85N Borg Warner Manual 3 speed Overdrive Transmission  
Geargeek  Offline
Junior Member
Joined: Sep 2006
Posts: 37
San Bernardino,Ca
Longbox55 and 50tiger sorry for the late respones and thanks for all the info the more I read here the more I learn. I feel good about the buy and look forward to keeping all informed on my progress , hopefully I;ll learn how to post some pics to illistrate everything ,Thanks again guys, Ed


Those who fail to plan, plan to fail....

#68327 - Mon Nov 13 2006 06:20 AM Re: T85N Borg Warner Manual 3 speed Overdrive Transmission  
chevman32  Offline
Shop Shark
Joined: Mar 2005
Posts: 1,994
Sanger, Ca.
I put an o'd trans in a 1954 Chevy pickup, it was fantastic! It would cruise at 75 M.P.H. at 2000 R.P.M. the stock 235 never even strained. I installed it with one wire from a switch to the solenoid. It would go into o'd at a dead stop and worked smoothly. The trans was a direct bolt in, absolutely no problems, total installation time including wiring was 1 1/2 hrs. Do it, you will love it for sure.


#68328 - Mon Nov 13 2006 04:36 PM Re: T85N Borg Warner Manual 3 speed Overdrive Transmission  
Truckasaurus  Offline
Shop Shark
Joined: Oct 2005
Posts: 180
Vallejo CA
Does any one know if those overdrive units will bolt up to a Saginaw 4 speed?
I talked to a guy that has a unit from a late 60's truck on a Saginaw 3 speed, any reason it wouldn't fit on the 4 speed as well?


#68329 - Mon Nov 13 2006 05:04 PM Re: T85N Borg Warner Manual 3 speed Overdrive Transmission  
Cosmo  Offline
ODSS President
Joined: Jan 2001
Posts: 2,317
C'ville,VA,USA,Earth
Truckasaurus, two different animals, the earlier type is the Borg-Warner, the later type, the all-synchro Saginaw. People HAVE made a 4- speed overdrive from a Saginaw that I know of, don't know of anyone doing it from a Borg-Warner.... requires drilling an accurate hole in the 4-speed main case. It can be done. Search Inliners.org, or someone here might have done it.

Oh, and NO, a B-W tail shaft that includes the overdrive will not bolt up to a 3 or 4 speed Saginaw front main case, two slightly different animals with different bolt spacings.


Cosmo

"If you come to a fork in the road, take it."...Yogi Berra

Page 1 of 2 1 2

Moderated by  53moneypit, Woogeroo 

Home | FAQ | Forum | Swap Meet | Gallery | Tech Tips | Links | Events | Features | Search | Hoo-Ya Shop
#-->
Powered by UBB.threads™ PHP Forum Software 7.6.0