who has a 3spd manual (SAGINAW) with overdrive ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

19673ontree · 06-07-2009, 10:13 AM

I am in the process of trying to get hold of one , A friend of mine has a good one and was going to use it in his car but he got a muncie 4spd insted so he is probably gonna let me have the saginaw 3spd overdrive now ,
anyway who has one and how much did it help ?
problem is my 67 has either a .373 or .410 ratio rear gear and it run's it to death out on the highway , it fine for around town but when I go down to TN it's too low , thank's ,,,,,

**special-K** · 06-07-2009, 10:33 AM

You`ll love it.It`s member botie that just did one.I think that`s his whole name.He`s in the Chesapeake,VA area.He has all the info you need.

**Boog** · 06-07-2009, 11:20 AM

Exactly. That's the one I was thinking of. These are fairly uncommon apparently. Works good with the 6 cyl.

BluTrukker · 06-07-2009, 11:40 AM

I have one, and it seems to be very reliable. However, my OD does not work. It has some electrical issues. Parts for the OD seem to be a little scarce, but other than that I would roll it. Especially if it all works.

Uwe Blab · 06-07-2009, 11:54 AM

Yeah, Botietruck is your guy. Here's a couple of threads he's started.

http://67-72chevytrucks.com/vboard/s...d.php?t=341968

http://67-72chevytrucks.com/vboard/s...87#post3305087

I just bought a non-synchro o/d unit out of a '55 Chevy truck. I'll need to do some modifications...all of which I don't even know yet, but I'm excited to get it hooked up.

If yours is a fully synchronized version, it's definitely worth something.

19673ontree · 06-07-2009, 01:53 PM

let me say this first , MY TRUCK HAS THE 250 SIX CYLINDER ,
I HAVE NEVER HAD ONE OF THESE TRANSMISSIONS ,
HERE IS THE WAY THIS ONE IS SET UP

#1 it has a lever operated with a cable (LIKE A CHOKE CABLE)
#2 it has a vaccum can on it with a hose you hook up to your intake vaccum
#3 it has a PAW ? operated by vaccum that will let it go in overdrive ,
so you will push in the clutch , let off the gas , then pull the cable ?

that is how it look's to me , it look's like it is a sincro trans but I am not sure ,
1st gear may not be sincronized and thats ok , I want to use it whether it is a full sincro or not ,,, can't wait to try it ,

also it look's like and I think it will be a direct bolt in , I don't know of any modification's that will have to be made , I think the driveshaft will even fit ,,

BUT AGAIN I HAVE NOT HAD ONE !!!!!!!!

PanelDeland · 06-07-2009, 03:33 PM

here's a link to how "botietruck"'s worked out with links in the thread to info.
http://www.67-72chevytrucks.com/vboa...d.php?t=341968

CG · 06-07-2009, 03:47 PM

I have one, but I have no idea if the OD part works. After doing some research and asking around I wouldnt sell it for less than 350 bucks like it sits. So you are getting a smoking deal at free =)

19673ontree · 06-07-2009, 04:25 PM

it look's like I MAY GET A GOOD DEAL on it , but the fact remain's that I don't have it yet

Uwe Blab · 06-07-2009, 05:12 PM

19673ontree,

As for operating the o/d, my understanding it's an automatic function based on a cut-in speed, usually around 28-30 mph. The cable you mention (that looks like a choke cable) is actually the lockout mechanism and prevents the overdrive from engaging when pulled out from the dash.

Here's a pic from ebay of a stock setup...

Botietruck · 06-07-2009, 05:17 PM

I've never seen one that is vacuum controlled. Not saying there not out there, but evertthing I've read and seen have an electric solenoid and a governor switch. If you can post a few pics of the one you are looking to get, that would be great. I would love to see it and the vacuum controls.

The Saginaws with the o/d are a direct bolt in, no need to modify/change the driveshaft. The trans linkage is the same.
BTW, it will stay engaged in all 3 gears. If you drive with the lever pushed in (engaged) it will be similar to a 4 speed. One fellow told me he never disengages his o/d. One thing you must remember, If you leave it engaged all the time, when you shut the engine off and the trans. is in a forward gear, the trans. is in the freewheel mode and the truck will roll. You will either put in in reverse or set the parking brake. I found that out when I pulled up to the gas pump, shut the engine off, o/d engaged,and got out of the truck. I turned to get the gas nozzle and it started rolling away. I was able to get inside and set the parking brake. Now I just put it in reverse, no matter where I am or whether or not the o/d is engaged.

It is fun to drive and the rpms drop quite a bit when it shifts into o/d.
Shoot me a pm if you have other questions, if I don't have the answer, I have alot of good reading on these things. We should be able to come up with something.
Bob

19673ontree · 06-08-2009, 11:48 AM

I will post pic's if and when I get the trans , I really can't comment much on what it doe's or doe's not have , I have never had one so I am just a bit new on them myself

06-07-2009, 11:40 AM	#4
BluTrukker BOHICA Join Date: Mar 2008 Location: Stewartville, MN Posts: 440	Re: who has a 3spd manual (SAGINAW) with overdrive ? I have one, and it seems to be very reliable. However, my OD does not work. It has some electrical issues. Parts for the OD seem to be a little scarce, but other than that I would roll it. Especially if it all works. __________________ Trying to save someone from their own stupidity is like teaching a pig to dance. It is a waste of your time, and it annoys the pig!

06-07-2009, 11:54 AM	#5
Uwe Blab Registered User Join Date: Feb 2009 Location: Overland Park, Kansas Posts: 134	Re: who has a 3spd manual (SAGINAW) with overdrive ? Yeah, Botietruck is your guy. Here's a couple of threads he's started. http://67-72chevytrucks.com/vboard/s...d.php?t=341968 http://67-72chevytrucks.com/vboard/s...87#post3305087 I just bought a non-synchro o/d unit out of a '55 Chevy truck. I'll need to do some modifications...all of which I don't even know yet, but I'm excited to get it hooked up. If yours is a fully synchronized version, it's definitely worth something.

06-07-2009, 01:53 PM	#6
19673ontree CAN'T FIX NOTHIN Join Date: Sep 2006 Location: SOUTHRUST VIRGINIA !!! Posts: 2,112	Re: who has a 3spd manual (SAGINAW) with overdrive ? let me say this first , MY TRUCK HAS THE 250 SIX CYLINDER , I HAVE NEVER HAD ONE OF THESE TRANSMISSIONS , HERE IS THE WAY THIS ONE IS SET UP #1 it has a lever operated with a cable (LIKE A CHOKE CABLE) #2 it has a vaccum can on it with a hose you hook up to your intake vaccum #3 it has a PAW ? operated by vaccum that will let it go in overdrive , so you will push in the clutch , let off the gas , then pull the cable ? that is how it look's to me , it look's like it is a sincro trans but I am not sure , 1st gear may not be sincronized and thats ok , I want to use it whether it is a full sincro or not ,,, can't wait to try it , also it look's like and I think it will be a direct bolt in , I don't know of any modification's that will have to be made , I think the driveshaft will even fit ,, BUT AGAIN I HAVE NOT HAD ONE !!!!!!!! __________________ 1967 C10 Shortbed Fleetside Small back glass 6 cyl 3spd on the tree 3.08 gears underdash AC

06-07-2009, 03:33 PM	#7
PanelDeland I am a Referee of life. Join Date: Jun 2000 Location: Greensboro N.C. Posts: 13,992	Re: who has a 3spd manual (SAGINAW) with overdrive ? here's a link to how "botietruck"'s worked out with links in the thread to info. http://www.67-72chevytrucks.com/vboa...d.php?t=341968 __________________ The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil"

06-07-2009, 03:47 PM	#8
CG BlahBlahBlah Join Date: Feb 2002 Location: Wa. Posts: 20,021	Re: who has a 3spd manual (SAGINAW) with overdrive ? I have one, but I have no idea if the OD part works. After doing some research and asking around I wouldnt sell it for less than 350 bucks like it sits. So you are getting a smoking deal at free =)

06-07-2009, 10:13 AM	#1
19673ontree CAN'T FIX NOTHIN Join Date: Sep 2006 Location: SOUTHRUST VIRGINIA !!! Posts: 2,112	who has a 3spd manual (SAGINAW) with overdrive ? I am in the process of trying to get hold of one , A friend of mine has a good one and was going to use it in his car but he got a muncie 4spd insted so he is probably gonna let me have the saginaw 3spd overdrive now , anyway who has one and how much did it help ? problem is my 67 has either a .373 or .410 ratio rear gear and it run's it to death out on the highway , it fine for around town but when I go down to TN it's too low , thank's ,,,,, __________________ 1967 C10 Shortbed Fleetside Small back glass 6 cyl 3spd on the tree 3.08 gears underdash AC

06-07-2009, 10:33 AM	#2
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: who has a 3spd manual (SAGINAW) with overdrive ? You`ll love it.It`s member botie that just did one.I think that`s his whole name.He`s in the Chesapeake,VA area.He has all the info you need. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ Last edited by special-K; 06-07-2009 at 12:27 PM.

06-07-2009, 11:20 AM	#3
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 13,514	Re: who has a 3spd manual (SAGINAW) with overdrive ? Exactly. That's the one I was thinking of. These are fairly uncommon apparently. Works good with the 6 cyl. __________________ Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross

06-07-2009, 04:25 PM	#9
19673ontree CAN'T FIX NOTHIN Join Date: Sep 2006 Location: SOUTHRUST VIRGINIA !!! Posts: 2,112	Re: who has a 3spd manual (SAGINAW) with overdrive ? it look's like I MAY GET A GOOD DEAL on it , but the fact remain's that I don't have it yet __________________ 1967 C10 Shortbed Fleetside Small back glass 6 cyl 3spd on the tree 3.08 gears underdash AC

06-07-2009, 05:12 PM	#10
Uwe Blab Registered User Join Date: Feb 2009 Location: Overland Park, Kansas Posts: 134	Re: who has a 3spd manual (SAGINAW) with overdrive ? 19673ontree, As for operating the o/d, my understanding it's an automatic function based on a cut-in speed, usually around 28-30 mph. The cable you mention (that looks like a choke cable) is actually the lockout mechanism and prevents the overdrive from engaging when pulled out from the dash. Here's a pic from ebay of a stock setup... Attached Images

06-07-2009, 05:17 PM	#11
Botietruck '71 chevy s.bed/s.side Join Date: Mar 2005 Location: Chesapeake, VA Posts: 1,571	Re: who has a 3spd manual (SAGINAW) with overdrive ? I've never seen one that is vacuum controlled. Not saying there not out there, but evertthing I've read and seen have an electric solenoid and a governor switch. If you can post a few pics of the one you are looking to get, that would be great. I would love to see it and the vacuum controls. The Saginaws with the o/d are a direct bolt in, no need to modify/change the driveshaft. The trans linkage is the same. BTW, it will stay engaged in all 3 gears. If you drive with the lever pushed in (engaged) it will be similar to a 4 speed. One fellow told me he never disengages his o/d. One thing you must remember, If you leave it engaged all the time, when you shut the engine off and the trans. is in a forward gear, the trans. is in the freewheel mode and the truck will roll. You will either put in in reverse or set the parking brake. I found that out when I pulled up to the gas pump, shut the engine off, o/d engaged,and got out of the truck. I turned to get the gas nozzle and it started rolling away. I was able to get inside and set the parking brake. Now I just put it in reverse, no matter where I am or whether or not the o/d is engaged. It is fun to drive and the rpms drop quite a bit when it shifts into o/d. Shoot me a pm if you have other questions, if I don't have the answer, I have alot of good reading on these things. We should be able to come up with something. Bob __________________ STILL PLAYS WITH CARS...AND TRUCKS!! Parents! Be good to your kids...they get to choose your nursing home! 250 I-6 with a 3 speed Saginaw and Borg Warner Overdrive...She's got overdrive! Last edited by Botietruck; 06-07-2009 at 05:17 PM.

06-08-2009, 11:48 AM	#12
19673ontree CAN'T FIX NOTHIN Join Date: Sep 2006 Location: SOUTHRUST VIRGINIA !!! Posts: 2,112	Re: who has a 3spd manual (SAGINAW) with overdrive ? I will post pic's if and when I get the trans , I really can't comment much on what it doe's or doe's not have , I have never had one so I am just a bit new on them myself __________________ 1967 C10 Shortbed Fleetside Small back glass 6 cyl 3spd on the tree 3.08 gears underdash AC



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.