LETS SEE THEM 3OTT trucks with OVERDRIVE - The 1947 - Present Chevrolet & GMC Truck Message Board Network

steveo3318 · 06-27-2015, 07:09 PM

This could be the only picture posted but I am just wondering if any more are left out there. I just converted my three speed saginaw to a saginaw with R10 overdrive. I finished it this week and all I can say is wow. I was running 3000rpms at 65, now I can run 70 or 74 by GPS at 2100 RPMS. Talking about smooth and a gas saver. It took almost a year to get all the parts together and now it was worth every second. After rounding it all up I found a complete 67 with the OD so I got it as a spare. Here it is with shiny paint it doesn't have any leaks yet. I rebuilt the whole thing including rewinding both the slamming and holding coil on the solenoid. These Overdrive units are easy to rebuild, so if anyone ever needs one rebuilt let me know! It still works off the governor and only engages after I exceed 28 MPH and I also have a push button to turn it on and off electrically along with the mechanical cable lockout.

If anyone else has one please post pictures. I know mine came out of a 67 c10 with a inline 6. Yes I know I will have to be easy on it with a little over 450 hp but That hasn't been an issue yet. Highway speeds are so nice now. I see some long trips in my future when I get my AC in.

ERASER5 · 06-27-2015, 09:04 PM

Nice addition to a already nice truck. What is the OD ratio?

9teen69 · 06-27-2015, 09:27 PM

Congrats, looks sweet!

steveo3318 · 06-27-2015, 11:04 PM

Borg Warner states it's a 30% overdrive. I can actually split shift every gear if I wanted and run it like a six speed but that's to much trouble. 2nd overdrive is like going into 3rd normal. Thank yall for the complements. It's extremely dirty. I live on a gravel drive and it's been raining

steveo3318 · 06-28-2015, 08:33 PM

Well I busted a loop with her today and filled up before takeoff and after I got back. With the hood off and running 70 to 80 I am averaging 17 mpg I am stoked. This was all highway driving

BluTrukker · 07-02-2015, 08:52 AM

I have on that does not currently work and has a few leaks. I would love to be able to get it working, if I can find the time. If you would be so kind as to go more in depth on how to re wrap the solenoids as well as post the part numbers for the gaskets/seals that you used. These parts are not too easy to find.

steveo3318 · 07-02-2015, 09:14 AM

The only odd seal used is in the solenoid housing for the rod and the exact same seal goes in the housing of the overdrive case where the rod goes through. Gaskets are not made for the overdrives any more but there is only one missing and I just used the right stuff gasket maker. They still make saginaw with overdrive rebuild kits that come with the correct bearings and o-rings for the od unit. When I get home I will get that part number. I am currently on a family trip. Now the wrapping of the solenoid took me 4 try's to get the amperage right. You have to use a coil winding wrapper counter and a ton of patience. But most could are not bad. It's the contacts inside. When I get home I will take more pictures of the tools needed and I can walk you through how to check it if you want

faribran · 07-02-2015, 09:18 AM

I have one of these in my 67 short stepper. Works great. Am thinking about pulling and replace with 5.3 and 4l60 e

faribran · 07-02-2015, 09:21 AM

Stevo, sharp truck!

steveo3318 · 07-02-2015, 09:21 AM

Let us know if it's for sell! Lol. If your tired of rowing gears I understand replacing it but I absolutely love mine and how nice it cruises in od down the highway. It blows people's minds when they ride with me and the old timers at the car shows are always trying to buy it. The cool factor is through the roof with them

steveo3318 · 07-02-2015, 09:23 AM

Faribran does it sit behind a six? And thanks on complement on my truck.

19673ontree · 07-02-2015, 10:10 AM

I loomed around for a saginaw 3spd overdrive for a while but ended up just putting 3.08 gears in my 67 but I would still like to have one of the od 3spds it would only work now for me in highway travel wonder if ai could even use 3rd gear with od and a 3.08 ?

steveo3318 · 07-02-2015, 10:17 AM

Negative. I am running 373 and in OD with a 450hp Stroker I am only running 2000 or so rpms at 70. Anything below 55 and it starts to lug. It converts my 373 to a 261 by my math. It would convert your 308 to a 214 final gear and you would need to be running a 120 to get any rpms out of it. I can run 105 at around 3000rpms. You would have to go back up in rear gears no doubt

19673ontree · 07-02-2015, 10:42 AM

Thats what I figured my 3.08 works good will leave it be , nice job on yours !

steveo3318 · 07-02-2015, 10:44 AM

Well I say you can't 1967. But I couldn't stand it and I plugged in some numbers and it says at 70 in OD you would be pulling 1700 rpms. Are you running a inline 6 or v8. If it's a six I am going to say it's not a good idea without a gear change. If v8 go for it. How many rpms are you pulling at 70 now my math shows around 2500 rpms

**Already Gone** · 07-02-2015, 12:09 PM

How about a factory overdrive. I bought this 69 CST with a 3OOT and factory overdrive a few years ago, Thought the 3OOT would be cool but after a few weeks of driving it daily and fighting with the column shift when it got jammed in second gear I sold it. Kinda regret it now, but oh well we all have "the one I should have kept stories". You can see the Overdrive push/pull lever just under the dash, its a small rectangular shape, just under the blank hole in the gauge cluster.

steveo3318 · 07-02-2015, 12:53 PM

Awesome truck. Looks optioned well also. Was it a six or v8? I have only ever see these OD behind the I6 from factory and the two I have both came from behind I6

steveo3318 · 07-02-2015, 12:56 PM

And that's prob a truck you should of kept for sure. gm states they stopped putting OD in anything after 68. That's clearly a 69 and looks rare.

**Already Gone** · 07-02-2015, 01:06 PM

It was a 307 and still had the breaker points in it. Only had 61,000 miles on it and the 307 ran so smooth you could put a glass of water on the Air Cleaner while the engine was running and the water wouldn't ripple. It was rust free too and just needed bed wood. I had the build sheet for it and think it was built in October 68 so probably one of the last trucks to be built with factory O/Drive.

steveo3318 · 07-02-2015, 01:49 PM

Wow. Wish it was still around

Malamute · 07-03-2015, 07:59 PM

What would it take to add OD to my current tranny? I could use a little more top end without getting the RPM's so high.

250/3OTT

Thanks.

In The Ten Ring · 07-03-2015, 08:58 PM

I sure wish my truck had overdrive.

3OTT, 250 I6, 4.11 gears. Could I put one on?

**jabborabbo** · 07-03-2015, 10:19 PM

Quote:

Originally Posted by In The Ten Ring

I sure wish my truck had overdrive.

3OTT, 250 I6, 4.11 gears. Could I put one on?

You and me both, bro....

67chevy1series · 07-04-2015, 02:01 AM

I believe c10kings 68 longbed c10 has the 3speedwithfactory overdrive.

steveo3318 · 07-04-2015, 05:31 PM

It would require a complete functional saginaw with Borg Warner r10 overdrive which is like finding hens teeth. I lucked upon an extra one I am keeping as a spare and for parts. The OD is sweet when cruising distance. Everything gets quiet and you just know the motors not going to explode lol

06-27-2015, 07:09 PM	#1
steveo3318 Registered User Join Date: Apr 2014 Location: Sumrall, MS Posts: 381	LETS SEE THEM 3OTT trucks with OVERDRIVE This could be the only picture posted but I am just wondering if any more are left out there. I just converted my three speed saginaw to a saginaw with R10 overdrive. I finished it this week and all I can say is wow. I was running 3000rpms at 65, now I can run 70 or 74 by GPS at 2100 RPMS. Talking about smooth and a gas saver. It took almost a year to get all the parts together and now it was worth every second. After rounding it all up I found a complete 67 with the OD so I got it as a spare. Here it is with shiny paint it doesn't have any leaks yet. I rebuilt the whole thing including rewinding both the slamming and holding coil on the solenoid. These Overdrive units are easy to rebuild, so if anyone ever needs one rebuilt let me know! It still works off the governor and only engages after I exceed 28 MPH and I also have a push button to turn it on and off electrically along with the mechanical cable lockout. If anyone else has one please post pictures. I know mine came out of a 67 c10 with a inline 6. Yes I know I will have to be easy on it with a little over 450 hp but That hasn't been an issue yet. Highway speeds are so nice now. I see some long trips in my future when I get my AC in. __________________ 1967 c10 3OTT with R10 overdrive. 385 Stroker, 373 posi FITECH EFI, Vintage air, York 210 OBA, 4/6 drop with riddler 20x8 and 20x10 1957 S5T Leslie Supertyfon train horns and EMD bell "No bolt left unturned"

06-27-2015, 09:04 PM	#2
ERASER5 Registered User Join Date: Jun 2006 Location: Indiana Posts: 4,859	Re: LETS SEE THEM 3OTT trucks with OVERDRIVE Nice addition to a already nice truck. What is the OD ratio? __________________ '70 GMC C1500 LWB Power disc brakes. WooHoo! Posi 6 Lug Dana 60

06-27-2015, 09:27 PM	#3
9teen69 Registered User Join Date: Sep 2002 Location: Austin, Texas Posts: 1,048	Re: LETS SEE THEM 3OTT trucks with OVERDRIVE Congrats, looks sweet! __________________ 72 Cheyenne SWB C10 (daily driver) (Super fake cause I just love the glovebox emblem) 70 Camaro RS (frame-off in pieces) 70 Camaro RS (daily driver backup) 69 Custom LWB C10 (son now drives)

06-27-2015, 11:04 PM	#4
steveo3318 Registered User Join Date: Apr 2014 Location: Sumrall, MS Posts: 381	Re: LETS SEE THEM 3OTT trucks with OVERDRIVE Borg Warner states it's a 30% overdrive. I can actually split shift every gear if I wanted and run it like a six speed but that's to much trouble. 2nd overdrive is like going into 3rd normal. Thank yall for the complements. It's extremely dirty. I live on a gravel drive and it's been raining __________________ 1967 c10 3OTT with R10 overdrive. 385 Stroker, 373 posi FITECH EFI, Vintage air, York 210 OBA, 4/6 drop with riddler 20x8 and 20x10 1957 S5T Leslie Supertyfon train horns and EMD bell "No bolt left unturned"

06-28-2015, 08:33 PM	#5
steveo3318 Registered User Join Date: Apr 2014 Location: Sumrall, MS Posts: 381	Re: LETS SEE THEM 3OTT trucks with OVERDRIVE Well I busted a loop with her today and filled up before takeoff and after I got back. With the hood off and running 70 to 80 I am averaging 17 mpg I am stoked. This was all highway driving __________________ 1967 c10 3OTT with R10 overdrive. 385 Stroker, 373 posi FITECH EFI, Vintage air, York 210 OBA, 4/6 drop with riddler 20x8 and 20x10 1957 S5T Leslie Supertyfon train horns and EMD bell "No bolt left unturned"

07-02-2015, 08:52 AM	#6
BluTrukker BOHICA Join Date: Mar 2008 Location: Stewartville, MN Posts: 440	Re: LETS SEE THEM 3OTT trucks with OVERDRIVE I have on that does not currently work and has a few leaks. I would love to be able to get it working, if I can find the time. If you would be so kind as to go more in depth on how to re wrap the solenoids as well as post the part numbers for the gaskets/seals that you used. These parts are not too easy to find. __________________ 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!

07-02-2015, 09:14 AM	#7
steveo3318 Registered User Join Date: Apr 2014 Location: Sumrall, MS Posts: 381	Re: LETS SEE THEM 3OTT trucks with OVERDRIVE The only odd seal used is in the solenoid housing for the rod and the exact same seal goes in the housing of the overdrive case where the rod goes through. Gaskets are not made for the overdrives any more but there is only one missing and I just used the right stuff gasket maker. They still make saginaw with overdrive rebuild kits that come with the correct bearings and o-rings for the od unit. When I get home I will get that part number. I am currently on a family trip. Now the wrapping of the solenoid took me 4 try's to get the amperage right. You have to use a coil winding wrapper counter and a ton of patience. But most could are not bad. It's the contacts inside. When I get home I will take more pictures of the tools needed and I can walk you through how to check it if you want __________________ 1967 c10 3OTT with R10 overdrive. 385 Stroker, 373 posi FITECH EFI, Vintage air, York 210 OBA, 4/6 drop with riddler 20x8 and 20x10 1957 S5T Leslie Supertyfon train horns and EMD bell "No bolt left unturned"

07-02-2015, 09:18 AM	#8
faribran Registered User Join Date: Jul 2005 Location: AL Posts: 1,828	Re: LETS SEE THEM 3OTT trucks with OVERDRIVE I have one of these in my 67 short stepper. Works great. Am thinking about pulling and replace with 5.3 and 4l60 e __________________ "

07-02-2015, 09:21 AM	#9
faribran Registered User Join Date: Jul 2005 Location: AL Posts: 1,828	Re: LETS SEE THEM 3OTT trucks with OVERDRIVE Stevo, sharp truck! __________________ "

07-02-2015, 09:23 AM	#11
steveo3318 Registered User Join Date: Apr 2014 Location: Sumrall, MS Posts: 381	Re: LETS SEE THEM 3OTT trucks with OVERDRIVE Faribran does it sit behind a six? And thanks on complement on my truck. __________________ 1967 c10 3OTT with R10 overdrive. 385 Stroker, 373 posi FITECH EFI, Vintage air, York 210 OBA, 4/6 drop with riddler 20x8 and 20x10 1957 S5T Leslie Supertyfon train horns and EMD bell "No bolt left unturned" Last edited by steveo3318; 07-02-2015 at 09:35 AM.

07-02-2015, 10:10 AM	#12
19673ontree CAN'T FIX NOTHIN Join Date: Sep 2006 Location: SOUTHRUST VIRGINIA !!! Posts: 2,112	Re: LETS SEE THEM 3OTT trucks with OVERDRIVE I loomed around for a saginaw 3spd overdrive for a while but ended up just putting 3.08 gears in my 67 but I would still like to have one of the od 3spds it would only work now for me in highway travel wonder if ai could even use 3rd gear with od and a 3.08 ? __________________ 1967 C10 Shortbed Fleetside Small back glass 6 cyl 3spd on the tree 3.08 gears underdash AC

07-02-2015, 10:17 AM	#13
steveo3318 Registered User Join Date: Apr 2014 Location: Sumrall, MS Posts: 381	Re: LETS SEE THEM 3OTT trucks with OVERDRIVE Negative. I am running 373 and in OD with a 450hp Stroker I am only running 2000 or so rpms at 70. Anything below 55 and it starts to lug. It converts my 373 to a 261 by my math. It would convert your 308 to a 214 final gear and you would need to be running a 120 to get any rpms out of it. I can run 105 at around 3000rpms. You would have to go back up in rear gears no doubt __________________ 1967 c10 3OTT with R10 overdrive. 385 Stroker, 373 posi FITECH EFI, Vintage air, York 210 OBA, 4/6 drop with riddler 20x8 and 20x10 1957 S5T Leslie Supertyfon train horns and EMD bell "No bolt left unturned"

07-02-2015, 10:42 AM	#14
19673ontree CAN'T FIX NOTHIN Join Date: Sep 2006 Location: SOUTHRUST VIRGINIA !!! Posts: 2,112	Re: LETS SEE THEM 3OTT trucks with OVERDRIVE Thats what I figured my 3.08 works good will leave it be , nice job on yours ! __________________ 1967 C10 Shortbed Fleetside Small back glass 6 cyl 3spd on the tree 3.08 gears underdash AC

07-02-2015, 10:44 AM	#15
steveo3318 Registered User Join Date: Apr 2014 Location: Sumrall, MS Posts: 381	Re: LETS SEE THEM 3OTT trucks with OVERDRIVE Well I say you can't 1967. But I couldn't stand it and I plugged in some numbers and it says at 70 in OD you would be pulling 1700 rpms. Are you running a inline 6 or v8. If it's a six I am going to say it's not a good idea without a gear change. If v8 go for it. How many rpms are you pulling at 70 now my math shows around 2500 rpms __________________ 1967 c10 3OTT with R10 overdrive. 385 Stroker, 373 posi FITECH EFI, Vintage air, York 210 OBA, 4/6 drop with riddler 20x8 and 20x10 1957 S5T Leslie Supertyfon train horns and EMD bell "No bolt left unturned"

07-02-2015, 12:09 PM	#16
Already Gone 70+ ( Old Skool Club ) Join Date: Nov 2003 Location: Saskatoon, Saskatchewan ,Canada Posts: 9,080	Re: LETS SEE THEM 3OTT trucks with OVERDRIVE How about a factory overdrive. I bought this 69 CST with a 3OOT and factory overdrive a few years ago, Thought the 3OOT would be cool but after a few weeks of driving it daily and fighting with the column shift when it got jammed in second gear I sold it. Kinda regret it now, but oh well we all have "the one I should have kept stories". You can see the Overdrive push/pull lever just under the dash, its a small rectangular shape, just under the blank hole in the gauge cluster. Attached Images __________________ 1972 C10 Custom/Deluxe 613 Highlander 406/700R4 1999 White Tahoe LS 4x2 with Z56 Police Package 1992 K1500 GMC Suburban Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601 " Circumsatances Do Not Change Responsibility " " The Sky is not the Limit, Your Mind is." Marilyn Monroe .. RIP Charlie Watts 1941 - 2021



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07-02-2015, 12:53 PM	#17
steveo3318 Registered User Join Date: Apr 2014 Location: Sumrall, MS Posts: 381	Re: LETS SEE THEM 3OTT trucks with OVERDRIVE Awesome truck. Looks optioned well also. Was it a six or v8? I have only ever see these OD behind the I6 from factory and the two I have both came from behind I6 __________________ 1967 c10 3OTT with R10 overdrive. 385 Stroker, 373 posi FITECH EFI, Vintage air, York 210 OBA, 4/6 drop with riddler 20x8 and 20x10 1957 S5T Leslie Supertyfon train horns and EMD bell "No bolt left unturned"

07-02-2015, 12:56 PM	#18
steveo3318 Registered User Join Date: Apr 2014 Location: Sumrall, MS Posts: 381	Re: LETS SEE THEM 3OTT trucks with OVERDRIVE And that's prob a truck you should of kept for sure. gm states they stopped putting OD in anything after 68. That's clearly a 69 and looks rare. __________________ 1967 c10 3OTT with R10 overdrive. 385 Stroker, 373 posi FITECH EFI, Vintage air, York 210 OBA, 4/6 drop with riddler 20x8 and 20x10 1957 S5T Leslie Supertyfon train horns and EMD bell "No bolt left unturned"

07-02-2015, 01:06 PM	#19
Already Gone 70+ ( Old Skool Club ) Join Date: Nov 2003 Location: Saskatoon, Saskatchewan ,Canada Posts: 9,080	Re: LETS SEE THEM 3OTT trucks with OVERDRIVE It was a 307 and still had the breaker points in it. Only had 61,000 miles on it and the 307 ran so smooth you could put a glass of water on the Air Cleaner while the engine was running and the water wouldn't ripple. It was rust free too and just needed bed wood. I had the build sheet for it and think it was built in October 68 so probably one of the last trucks to be built with factory O/Drive. __________________ 1972 C10 Custom/Deluxe 613 Highlander 406/700R4 1999 White Tahoe LS 4x2 with Z56 Police Package 1992 K1500 GMC Suburban Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601 " Circumsatances Do Not Change Responsibility " " The Sky is not the Limit, Your Mind is." Marilyn Monroe .. RIP Charlie Watts 1941 - 2021 Last edited by Already Gone; 07-02-2015 at 01:21 PM.

07-02-2015, 01:49 PM	#20
steveo3318 Registered User Join Date: Apr 2014 Location: Sumrall, MS Posts: 381	Re: LETS SEE THEM 3OTT trucks with OVERDRIVE Wow. Wish it was still around __________________ 1967 c10 3OTT with R10 overdrive. 385 Stroker, 373 posi FITECH EFI, Vintage air, York 210 OBA, 4/6 drop with riddler 20x8 and 20x10 1957 S5T Leslie Supertyfon train horns and EMD bell "No bolt left unturned"

07-03-2015, 07:59 PM	#21
Malamute Registered User Join Date: Sep 2011 Location: Louisville, KY Posts: 756	Re: LETS SEE THEM 3OTT trucks with OVERDRIVE What would it take to add OD to my current tranny? I could use a little more top end without getting the RPM's so high. 250/3OTT Thanks.

07-03-2015, 08:58 PM	#22
In The Ten Ring Registered User Join Date: Jun 2013 Location: West Virginia Posts: 6,421	Re: LETS SEE THEM 3OTT trucks with OVERDRIVE I sure wish my truck had overdrive. 3OTT, 250 I6, 4.11 gears. Could I put one on?

07-04-2015, 02:01 AM	#24
67chevy1series Registered User Join Date: Mar 2010 Location: a t w a t e r cali 95301 Posts: 10,713	Re: LETS SEE THEM 3OTT trucks with OVERDRIVE I believe c10kings 68 longbed c10 has the 3speedwithfactory overdrive.

07-04-2015, 05:31 PM	#25
steveo3318 Registered User Join Date: Apr 2014 Location: Sumrall, MS Posts: 381	Re: LETS SEE THEM 3OTT trucks with OVERDRIVE It would require a complete functional saginaw with Borg Warner r10 overdrive which is like finding hens teeth. I lucked upon an extra one I am keeping as a spare and for parts. The OD is sweet when cruising distance. Everything gets quiet and you just know the motors not going to explode lol __________________ 1967 c10 3OTT with R10 overdrive. 385 Stroker, 373 posi FITECH EFI, Vintage air, York 210 OBA, 4/6 drop with riddler 20x8 and 20x10 1957 S5T Leslie Supertyfon train horns and EMD bell "No bolt left unturned"

Register or Log In To remove these advertisements.