Quest for Overdrive. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

farside847 · 07-18-2005, 11:19 AM

I have heard rumors and quiet whispers of such an animal as a 3sp manual transmission with a manual overdrive. The unit had sme type of manual lever under the dash to engage the overdrive.

Does anyone know if this was available with our year trucks? I looked in my manual and cant find any info on it. Any information you guys may have would be super helpful!

I have a 3onthetree and would kinda like to keep it, but I do alot of highway driving were an overdrive would save me on some gas money...

thanks~!

**pjmoreland** · 07-18-2005, 11:40 AM

I had one in a 67 truck. Good luck finding one though. I saw one on eBay once about a year ago. Those are the only two I've ever seen.

I was able to get 21 MPG on the highway with an inline 6 engine.

farside847 · 07-18-2005, 11:47 AM

mmMMmm. 21 MPG - now thats what IM talk'n about!

TP from Cntl PA · 07-18-2005, 12:34 PM

I looked for one too...........Last one I seen was the one Burnsman had acouple of years ago for sale. Didn't jump on it.

Then I decided on going the NV4500 route until the salvage yards quoted me a price on a used one............Couldn't see paying more for a tranny than I did for the truck

I did figure out an OD for alot less...........Currently working to get a patent on it so I can't give out too many details. Got it in "Testing" behind the Cummins and after abusing it on the farm we still haven't been able to break it

Send me a PM if you want to know more, you could keep you 3spd with this setup too

farside847 · 07-18-2005, 01:38 PM

Quote:

Originally Posted by pjmoreland

I had one in a 67 truck. Good luck finding one though. I saw one on eBay once about a year ago. Those are the only two I've ever seen.

I was able to get 21 MPG on the highway with an inline 6 engine.

Do you remember what the transmission was called? I can always look around...

farside847 · 07-18-2005, 05:16 PM

Anyone know what years this was available?

BET68 · 07-18-2005, 05:59 PM

I HAVE ONE IN A 1969 LONGHORN, HAVE NOT HAD TIME TO WORK ON THIS TK, DON'T KNOW IF IT WORKS OR NOT.

xam · 07-18-2005, 06:27 PM

The trans is a Borg Warner t - 85 n overdrive. Soem info out there on the web. I have one in the basement for my 1970 c-20 , ( someday ) three trucks in front of that one.

farside847 · 07-18-2005, 07:12 PM

Quote:

Originally Posted by xam

The trans is a Borg Warner t - 85 n overdrive.

Are you sure? After you posted this I took a look on Ebay and found one, and it sayd Ford!?@?@#
http://cgi.ebay.com/ebaymotors/ws/eB...spagename=WDVW

**pjmoreland** · 07-18-2005, 07:17 PM

Boardmember Deuce might be able to tell you what my old overdrive was called. He bought my truck and he has the original build list for the truck, but not the overdrive transmission.

xam · 07-19-2005, 08:31 AM

Borg Warner sold that trans to everyone from GM to studebaker. The overdrive is steep .66 :1 if I recall correctly. Try this for more info
http://www.classictruckshop.com/club...over/drive.htm
The Borg Warner super t 10 in my 77 Trans am is the same one used in the Ford Mustang 2 ( how embarasing).

phlegm · 07-19-2005, 09:03 AM

XAM,

Thats good info, I am not smart enough to install and use all that, but it sure looks cool.

Lobo'74 · 07-19-2005, 10:48 AM

Try this too

http://www.chevytrucks.org/tech/overdrive.htm

farside847 · 07-19-2005, 10:58 AM

Woah! You mean this thing is a manual 3 speed, with an automatic overdrive! How extremely cool!

**PICKMUP** · 07-19-2005, 12:53 PM

This is a pic of one I sold on here.

There is a 68 GMC 1/2t around here, meaning in our area/not at my place: 37K, 250 w/3spd & OD, all original. I don't think the six has enough power to pull it in OD.

farside847 · 07-19-2005, 01:08 PM

Quote:

Originally Posted by PICKMUP

There is a 68 GMC 1/2t around here: 37K, 250 w/3spd & OD.

If your selling parts from it Id be interested in hearing more about the tranny and all the hookup stuff.

PS. I have the 307V8

gator2511 · 07-19-2005, 01:42 PM

I had a 55 Chevy Bel Air that had a three on the tree with an overdrive actuated by a handle attached to a cable. Came that way from the factory. I don't know any more than that about them except that it worked!

farside847 · 07-19-2005, 04:27 PM

Do you know what model the Chevy's used for the manual overdrive units? Like your Bel Air. Sounds like the Borg Warner was a semi-automatic, very cool, but sounds rare (expensive).

Scrubby · 07-19-2005, 06:37 PM

The cars, like my '56 210 wagon, used a saginaw 3 speed overdrive. In the 50's they did not have a synchonized first gear. I have one out of a 67 el camino that I am going to put in my wagon that has the synchro first. Those are very rare with the overdrive. It took me a few years to track one down.

07-18-2005, 11:19 AM	#1
farside847 Registered User Join Date: Feb 2005 Location: Bay Area, California Posts: 995	Quest for Overdrive. I have heard rumors and quiet whispers of such an animal as a 3sp manual transmission with a manual overdrive. The unit had sme type of manual lever under the dash to engage the overdrive. Does anyone know if this was available with our year trucks? I looked in my manual and cant find any info on it. Any information you guys may have would be super helpful! I have a 3onthetree and would kinda like to keep it, but I do alot of highway driving were an overdrive would save me on some gas money... thanks~! __________________ 1971 Chevy C10 Shortbed Stepside, 307v8 3-on-the-tree

07-18-2005, 11:47 AM	#3
farside847 Registered User Join Date: Feb 2005 Location: Bay Area, California Posts: 995	mmMMmm. 21 MPG - now thats what IM talk'n about! __________________ 1971 Chevy C10 Shortbed Stepside, 307v8 3-on-the-tree

07-18-2005, 12:34 PM	#4
TP from Cntl PA Registered User Join Date: Apr 2003 Location: Central PA....In the Berg of Nisbet Posts: 790	I looked for one too...........Last one I seen was the one Burnsman had acouple of years ago for sale. Didn't jump on it. Then I decided on going the NV4500 route until the salvage yards quoted me a price on a used one............Couldn't see paying more for a tranny than I did for the truck I did figure out an OD for alot less...........Currently working to get a patent on it so I can't give out too many details. Got it in "Testing" behind the Cummins and after abusing it on the farm we still haven't been able to break it Send me a PM if you want to know more, you could keep you 3spd with this setup too __________________ '72 K-20 EFI'ed 250 Inline/4spd stake body, Farm Truck '71 C-20 Cummins Diesel Powered, In storage thanks to $5.00 diesel! '69 3500 GMC 305V-6/4spd, Still under reconstruction.......... Inlines Rule! 6 soldiers standing is better than 8 laying down!!!!!!!! Last edited by TP from Cntl PA; 07-18-2005 at 12:35 PM.

07-18-2005, 05:16 PM	#6
farside847 Registered User Join Date: Feb 2005 Location: Bay Area, California Posts: 995	Anyone know what years this was available? __________________ 1971 Chevy C10 Shortbed Stepside, 307v8 3-on-the-tree

07-18-2005, 05:59 PM	#7
BET68 Registered User Join Date: Mar 2004 Location: BREVARD NC Posts: 156	Overdrive I HAVE ONE IN A 1969 LONGHORN, HAVE NOT HAD TIME TO WORK ON THIS TK, DON'T KNOW IF IT WORKS OR NOT. __________________ NAMASTE B&E 1971 LONGHORN C-30 1969 LONGHORN C-20 1968 DUALLY 1970 STEP SIDE PROJECT 1972 CST C-20 1980 M-80 MALIBU FOR SALE 1974 NOVA FOR SALE:

07-18-2005, 11:40 AM	#2
pjmoreland Senior Member Join Date: Jan 2005 Location: CA Posts: 5,635	I had one in a 67 truck. Good luck finding one though. I saw one on eBay once about a year ago. Those are the only two I've ever seen. I was able to get 21 MPG on the highway with an inline 6 engine.

07-18-2005, 06:27 PM	#8
xam Registered User Join Date: Feb 2003 Location: maryland Posts: 34	The trans is a Borg Warner t - 85 n overdrive. Soem info out there on the web. I have one in the basement for my 1970 c-20 , ( someday ) three trucks in front of that one.

07-18-2005, 07:17 PM	#10
pjmoreland Senior Member Join Date: Jan 2005 Location: CA Posts: 5,635	Boardmember Deuce might be able to tell you what my old overdrive was called. He bought my truck and he has the original build list for the truck, but not the overdrive transmission.

07-19-2005, 08:31 AM	#11
xam Registered User Join Date: Feb 2003 Location: maryland Posts: 34	Borg Warner sold that trans to everyone from GM to studebaker. The overdrive is steep .66 :1 if I recall correctly. Try this for more info http://www.classictruckshop.com/club...over/drive.htm The Borg Warner super t 10 in my 77 Trans am is the same one used in the Ford Mustang 2 ( how embarasing).

07-19-2005, 09:03 AM	#12
phlegm Still Green but learning Join Date: Nov 2004 Location: Central NC Posts: 1,895	XAM, Thats good info, I am not smart enough to install and use all that, but it sure looks cool. __________________ -- Cory 71 Cheyenne 10 - SWB, 350, "3 on the tree" AC cab 07 Suburban LTZ 4x4 2010 Acura TL 98 Mastercraft "FrankenStar" 225 27253 UPS/USPS IIOY....nope never was

07-19-2005, 10:48 AM	#13
Lobo'74 Registered User Join Date: Nov 2002 Location: Charlottesville, VA Posts: 404	Try this too http://www.chevytrucks.org/tech/overdrive.htm __________________ "Truck" '67 small window '79 350 .030 over, LT1 "clone"

07-19-2005, 10:58 AM	#14
farside847 Registered User Join Date: Feb 2005 Location: Bay Area, California Posts: 995	Woah! You mean this thing is a manual 3 speed, with an automatic overdrive! How extremely cool! __________________ 1971 Chevy C10 Shortbed Stepside, 307v8 3-on-the-tree

07-19-2005, 12:53 PM	#15
PICKMUP "Trucks with Class" Join Date: Jul 2000 Location: OLYMPIA, WA, USA Posts: 8,134	This is a pic of one I sold on here. There is a 68 GMC 1/2t around here, meaning in our area/not at my place: 37K, 250 w/3spd & OD, all original. I don't think the six has enough power to pull it in OD. Attached Images __________________ Email: frankeham@comcast.net Phone: 360-956-7170 Last edited by PICKMUP; 07-19-2005 at 10:14 PM.

07-19-2005, 01:42 PM	#17
gator2511 Registered User Join Date: Mar 2005 Location: tampa florida Posts: 776	I had a 55 Chevy Bel Air that had a three on the tree with an overdrive actuated by a handle attached to a cable. Came that way from the factory. I don't know any more than that about them except that it worked!

07-19-2005, 04:27 PM	#18
farside847 Registered User Join Date: Feb 2005 Location: Bay Area, California Posts: 995	Do you know what model the Chevy's used for the manual overdrive units? Like your Bel Air. Sounds like the Borg Warner was a semi-automatic, very cool, but sounds rare (expensive). __________________ 1971 Chevy C10 Shortbed Stepside, 307v8 3-on-the-tree



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07-19-2005, 06:37 PM	#19
Scrubby Check out GMTrucks.org Join Date: Sep 2003 Location: Boise, Id Posts: 284	The cars, like my '56 210 wagon, used a saginaw 3 speed overdrive. In the 50's they did not have a synchonized first gear. I have one out of a 67 el camino that I am going to put in my wagon that has the synchro first. Those are very rare with the overdrive. It took me a few years to track one down.

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