1967 with an overdrive 3 on the tree??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

shawno72 · 12-01-2011, 01:05 PM

Look what came into the shop today. The customer wants to explore the possibilities of being able to drive this truck 70mph down the freeway. Right now it has a 250 with a three on the tree but when I got in the truck I noticed and overdrive pull handle so I checked the spid and found that it said overdrive transmission. Can someone explain what this is.
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faribran · 12-01-2011, 01:19 PM

i have one of those....... mine works like a champ.... its an overdrive.. mine comes in while in 2nd and high gear... depending on the position of the cable and the speed of the vehicle...... the owner should be happy with cruise speed if the o/d unit is working...
if not.. there is an inline fuse that powers the Solonoid... this is the first place i would look..

GASoline71 · 12-01-2011, 01:26 PM

That '67 inline 6 with the 3 on the tree prolly has 4:11 gears in the rear. Even with the old school OD it will rev out pretty good at highway speeds.

Gary

Redleg · 12-01-2011, 01:53 PM

My question is how well do they work and are they still available?

shawno72 · 12-01-2011, 02:18 PM

Ok I guess we will have to drive it and try the cable. Can you pull the cable while driving or should you pull it out before you take off??

67swb72klb · 12-01-2011, 02:33 PM

when u get it into 2nd or 3rd gear u have to lift on the gas petal and u should feel it go into o/d might want to check under it to see if it still has the o/d in it still could have been taken out at some point

shawno72 · 12-01-2011, 02:40 PM

Quote:

Originally Posted by 67swb72klb

when u get it into 2nd or 3rd gear u have to lift on the gas petal and u should feel it go into o/d might want to check under it to see if it still has the o/d in it still could have been taken out at some point

Any pics of what the overdrive might look like??

67swb72klb · 12-01-2011, 02:45 PM

i dont hav any pics but there was one or two solonoids on the outside of the trans

faribran · 12-01-2011, 02:54 PM

i just leave the O/D engaged(cable)... take off like normal... and as mentioned above.

at speed, in 2nd gear.. reduce pressure on the go pedal, and you should feel it engage..feels like another gear change.

**RenoKeene** · 12-01-2011, 03:37 PM

If they don't want that extremelly complicated overdrive anymore I'll take it, would work real good on my 67 Slant Back.

faribran · 12-01-2011, 04:03 PM

me too Reno

SS Tim · 12-01-2011, 05:10 PM

They work pretty good, the drawback has always been the decell freewheeling. No compression braking at all when OD is engaged. Standard ratio was 4.10 in the trucks. They were only offered in the C10 and really are not heavy enough for a tow truck. There are much better choices out there.

SS Tim · 12-01-2011, 05:30 PM

For those that just have to know more... this is close

http://www.classictruckshop.com/club...5n/rebuild.htm

shawno72 · 12-01-2011, 04:40 PM

Well I looked underneath and no solenoids, nothing but an electrical connector dangling and the overdrive cable pushed through a hole in the frame. Well I guess that answers that.

PanelDeland · 12-01-2011, 04:53 PM

So swap in a 3:73 rear and a 700R4/200R4 and let them get after it.That should put 70 about right.

shawno72 · 12-01-2011, 05:15 PM

SS Tim thanks for the pics and explanation. I can clearly see from your pics that this trans is no longer an overdrive transmission.

*Achevytruck* · 02-13-2012, 07:46 PM

WoW i hear its hard to find and my ? is how come it did not come with an V8 engine

12-01-2011, 01:05 PM	#1
shawno72 C/10 junkie Join Date: Nov 2010 Location: Stockton Ca Posts: 9,093	1967 with an overdrive 3 on the tree??? Look what came into the shop today. The customer wants to explore the possibilities of being able to drive this truck 70mph down the freeway. Right now it has a 250 with a three on the tree but when I got in the truck I noticed and overdrive pull handle so I checked the spid and found that it said overdrive transmission. Can someone explain what this is. __________________ Shawn 70 LWB C10 current driver/project http://67-72chevytrucks.com/vboard/s...d.php?t=663051 68 SWB C10 Work in progress.....SOLD http://67-72chevytrucks.com/vboard/s...d.php?t=559520 72 LWB C10 Sold 71 LWB C10 Sold 68 LWB C10 CST Sold http://youtu.be/kbB0QrBIs9k My mom always had the best advice. It was just a tad late. After a fall that involved blood, she'd say....."Careful!"

12-01-2011, 01:19 PM	#2
faribran Registered User Join Date: Jul 2005 Location: AL Posts: 1,828	Re: 1967 with an overdrive 3 on the tree??? i have one of those....... mine works like a champ.... its an overdrive.. mine comes in while in 2nd and high gear... depending on the position of the cable and the speed of the vehicle...... the owner should be happy with cruise speed if the o/d unit is working... if not.. there is an inline fuse that powers the Solonoid... this is the first place i would look.. __________________ "

12-01-2011, 02:18 PM	#5
shawno72 C/10 junkie Join Date: Nov 2010 Location: Stockton Ca Posts: 9,093	Re: 1967 with an overdrive 3 on the tree??? Ok I guess we will have to drive it and try the cable. Can you pull the cable while driving or should you pull it out before you take off?? __________________ Shawn 70 LWB C10 current driver/project http://67-72chevytrucks.com/vboard/s...d.php?t=663051 68 SWB C10 Work in progress.....SOLD http://67-72chevytrucks.com/vboard/s...d.php?t=559520 72 LWB C10 Sold 71 LWB C10 Sold 68 LWB C10 CST Sold http://youtu.be/kbB0QrBIs9k My mom always had the best advice. It was just a tad late. After a fall that involved blood, she'd say....."Careful!"

12-01-2011, 02:33 PM	#6
67swb72klb Registered User Join Date: Dec 2010 Location: livingston co.mi Posts: 2,464	Re: 1967 with an overdrive 3 on the tree??? when u get it into 2nd or 3rd gear u have to lift on the gas petal and u should feel it go into o/d might want to check under it to see if it still has the o/d in it still could have been taken out at some point __________________ California 65 GTO---Texas 64 burb 283 ---Oklahoma 67 CST SWB BBW wood bed 327 2004r---New Mexico 72 k10 350 350 auto---Georga 72 short step project

12-01-2011, 02:45 PM	#8
67swb72klb Registered User Join Date: Dec 2010 Location: livingston co.mi Posts: 2,464	Re: 1967 with an overdrive 3 on the tree??? i dont hav any pics but there was one or two solonoids on the outside of the trans __________________ California 65 GTO---Texas 64 burb 283 ---Oklahoma 67 CST SWB BBW wood bed 327 2004r---New Mexico 72 k10 350 350 auto---Georga 72 short step project

12-01-2011, 02:54 PM	#9
faribran Registered User Join Date: Jul 2005 Location: AL Posts: 1,828	Re: 1967 with an overdrive 3 on the tree??? i just leave the O/D engaged(cable)... take off like normal... and as mentioned above. at speed, in 2nd gear.. reduce pressure on the go pedal, and you should feel it engage..feels like another gear change. __________________ "

12-01-2011, 03:37 PM	#10
RenoKeene Florida Edition Join Date: Oct 2010 Location: Fruitland Park, FL Posts: 4,028	Re: 1967 with an overdrive 3 on the tree??? If they don't want that extremelly complicated overdrive anymore I'll take it, would work real good on my 67 Slant Back. __________________ 70 GMC Short Stepside "Rose"-An American Beauty: Factory 402/TH400, AM/FM, AC, Tilt, Tach, Buckets, Posi, PS, PB, 3-5 Drop, Complete Resto-Rod 67 C-20 Slant Back Wrecker "Mad Max" 67 C-10 Ratrod "Step-N-Wolf" 71 Serro Scotty Sportsman camper "Scotty" 97 LT1 Z28 "The Hornet" Link to more pics of "Rose" http://67-72chevytrucks.com/vboard/a...p?albumid=1684 Check out my "Cheap Tricks" thread and add to it if you can, lots of good info there. http://67-72chevytrucks.com/vboard/s...d.php?t=489394

12-01-2011, 04:03 PM	#11
faribran Registered User Join Date: Jul 2005 Location: AL Posts: 1,828	Re: 1967 with an overdrive 3 on the tree??? me too Reno __________________ "

12-01-2011, 05:10 PM	#12
SS Tim Registered User Join Date: Aug 2010 Location: Edwards, CA Posts: 7,503	Re: 1967 with an overdrive 3 on the tree??? They work pretty good, the drawback has always been the decell freewheeling. No compression braking at all when OD is engaged. Standard ratio was 4.10 in the trucks. They were only offered in the C10 and really are not heavy enough for a tow truck. There are much better choices out there. Attached Images __________________ Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID Blazer SPID Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders Do you have a 1972 Plaid Pickup? Plaid Blazer ** Plaid Suburban

12-01-2011, 05:30 PM	#13
SS Tim Registered User Join Date: Aug 2010 Location: Edwards, CA Posts: 7,503	Re: 1967 with an overdrive 3 on the tree??? For those that just have to know more... this is close http://www.classictruckshop.com/club...5n/rebuild.htm __________________ Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID Blazer SPID Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders Do you have a 1972 Plaid Pickup? Plaid Blazer ** Plaid Suburban Last edited by SS Tim; 12-01-2011 at 05:44 PM.

12-01-2011, 04:40 PM	#14
shawno72 C/10 junkie Join Date: Nov 2010 Location: Stockton Ca Posts: 9,093	Re: 1967 with an overdrive 3 on the tree??? Well I looked underneath and no solenoids, nothing but an electrical connector dangling and the overdrive cable pushed through a hole in the frame. Well I guess that answers that. __________________ Shawn 70 LWB C10 current driver/project http://67-72chevytrucks.com/vboard/s...d.php?t=663051 68 SWB C10 Work in progress.....SOLD http://67-72chevytrucks.com/vboard/s...d.php?t=559520 72 LWB C10 Sold 71 LWB C10 Sold 68 LWB C10 CST Sold http://youtu.be/kbB0QrBIs9k My mom always had the best advice. It was just a tad late. After a fall that involved blood, she'd say....."Careful!"

12-01-2011, 04:53 PM	#15
PanelDeland I am a Referee of life. Join Date: Jun 2000 Location: Greensboro N.C. Posts: 13,993	Re: 1967 with an overdrive 3 on the tree??? So swap in a 3:73 rear and a 700R4/200R4 and let them get after it.That should put 70 about right. __________________ 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"

12-01-2011, 05:15 PM	#16
shawno72 C/10 junkie Join Date: Nov 2010 Location: Stockton Ca Posts: 9,093	Re: 1967 with an overdrive 3 on the tree??? SS Tim thanks for the pics and explanation. I can clearly see from your pics that this trans is no longer an overdrive transmission. __________________ Shawn 70 LWB C10 current driver/project http://67-72chevytrucks.com/vboard/s...d.php?t=663051 68 SWB C10 Work in progress.....SOLD http://67-72chevytrucks.com/vboard/s...d.php?t=559520 72 LWB C10 Sold 71 LWB C10 Sold 68 LWB C10 CST Sold http://youtu.be/kbB0QrBIs9k My mom always had the best advice. It was just a tad late. After a fall that involved blood, she'd say....."Careful!"

02-13-2012, 07:46 PM	#17
Achevytruck Account Suspended Join Date: Feb 2012 Location: Alva FL Posts: 197	Re: 1967 with an overdrive 3 on the tree??? WoW i hear its hard to find and my ? is how come it did not come with an V8 engine



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