Looking at a 4 speed trans. Would like to know more about it? Here are some numbers on the trans. T10-1B W.G.DIV. W=1. T10 K-7 Would like to know what year, car or truck ? Thank you..
Borg-Warner T-10. Most likely a passenger car transmission used in various car applications- - - -mostly in Fords. Some Corvettes used T10-s in the late 1950s before Muncie started making their aluminum case models. Is the case cast iron, and does it have a Ford or GM bellhousing bolt pattern? Got any pictures? I believe the T-10 was developed from a modification of the T-85 heavy duty 3 speed box used in some Pontiac applications. Can you post any pictures? Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
Ol'55, Here is an article from Hemmings on the BW T-10 that may shed some light on your 4 speed. Also of some help is if you can clean up and post the stamped transmission ID number you can just barely see in the pic below I snagged from your post. Let us know what it is and someone can try and chase down more details.
~ Dan 1951 Chevy 3 window 3100 Follow this story in the DITY Gallery "My Grandpa Carl's Truck and How it Became Mine" 1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)
Here is a web site I found that provides some very good details about early BW T-10's. According to the info shown, your ID decodes as:
W = Warner Transmission (manufacturer) C = March (month of build) 5 = 5th day of March (day of the month built) 5 = 1965 (production year) * 3 = 3rd shift (shift of the day that built it)
* According to the listed production/use years being 1957-65 for Chevy's, I think the only plausible choice would be that year.
The tail housing date code I believe is actual 1964 based on the above note. It's may not be original to the transmission. Something used to repair/replace damaged or worn out parts which is common.
The site also shows other details such as drive ratios in each gear. Hope the info provides the help you needed.
~ Dan 1951 Chevy 3 window 3100 Follow this story in the DITY Gallery "My Grandpa Carl's Truck and How it Became Mine" 1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)
All the light duty 4 speeds without granny low were initially produced for cars. That would include Saginaw, Muncie, Borg-Warner, New Process, and the T-5 overdrive that's the current fad. None of them were designed to do truck stuff, but they can be used to drive a Cowboy Cadillac pickup around with an iced-down Yeti cooler strapped into the bed to a tailgate party somewhere. Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
T-10s were available in Chevrolet applications and others from 57 on to at least '66. It was a favorite muscle-car transmission and appeared in Pontiac GTOs, various MOPARs. I had one in a factory-supplied '66 Bonneville. Notably, they were not available behind MOPAR 413s and 426s. You could get the heavy-duty 3-speed or a Torqueflight. To my knowledge, they were not available in any full-sized pickups. Word on the street back in the day was that the T10 would not withstand the torque of a 426 MOPAR. But then they did come behind 396 and 427 chevs, 421 Pontiacs, 442 Olds (what were they, 400ci ?). So, who knows...
Perhaps for a hot-rod half-ton pickup it could be a good choice but bear in mind that there were two 1st-gear ratios available: 2.56 and 2.20. My Bonneville had the 2.56 low and that was only just adequate to get it rolling despite the big 421. Of course if I burned the tires there was no problem once the smoke cleared.
1951 3800 1-ton "Earning its keep from the get-go" In the DITY Gallery 1962 261 (w/cam, Fenton headers, 2 carbs, MSD ign.), SM420 & Brown-Lipe 6231A 3spd aux. trans, stock axles & brakes. Owned since 1971.
How would you know if you had the 2.20 or 2.56 1st gear and yes it's definitely time to fill up that there Yeti with a few cold ones and drive around with your Ol Cowboy Cadillac doing a couple a John Force burnouts???
To figure any ratio, put the transmission in whatever gear you're checking, and turn the input shaft 10 times. Count the turns the output shaft makes and do a little math. The Muncie 4 speeds we used in the dirt trackers had either a 1.88 or a 2.20 ratio second gear, and we preferred to use the 2.20 type. Against a 4.11 rear end, we had a final drive ratio of 9.04:1 on a 1/4 mile dirt oval. That was just right for launching off the turns at around 3K RPM and hitting 7K by the end of the (very short) straightaway. Do that twice a lap for a thousand laps or so, and it was time to freshen up the engine by about mid-season. Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
