55 second series 3 speed overdrive questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**WIDESIDE72** · 03-21-2015, 09:22 AM

I am usually on the 67-72 side and have redone a 71 GMC custom swb step and 72 cheyenne swb step. I have a 55 big window that ive owned for 30 yrs (!) that i need to get going again. Back in the eighties my brother installed an overdrive that if i remember correctly came out of a 58/59. Unfortunately the donor truck didnt have any of the wiring or controls. My truck is all original but needs a full restoration. I found a wiring harness from Jim Carter but does anyone have any more info about getting the overdrive working correctly?

beanyard · 03-21-2015, 10:39 AM

There are 4 components. Kick down switch, governor, solenoid, and relay. There are wiring diagrams on the web. Use search terms like 55 chevy Borg Warner overdrive. A place called 5th avenue parts garage carries parts an has some know how as well. My 59 has this setup in operating condition.

whitedog76 · 03-21-2015, 10:54 AM

Here's a factory service manual for the overdrive unit. Should be the same.

http://studebakerclubs.com/NorthGeorgia/Overdrive.pdf

These guys are your parts source.

http://fifthaveinternetgarage.com/overdrive_parts.php

03-21-2015, 09:22 AM	#1
WIDESIDE72 Senior Member Join Date: Aug 2008 Location: Cedar Park, Texas Posts: 7,494	55 second series 3 speed overdrive questions I am usually on the 67-72 side and have redone a 71 GMC custom swb step and 72 cheyenne swb step. I have a 55 big window that ive owned for 30 yrs (!) that i need to get going again. Back in the eighties my brother installed an overdrive that if i remember correctly came out of a 58/59. Unfortunately the donor truck didnt have any of the wiring or controls. My truck is all original but needs a full restoration. I found a wiring harness from Jim Carter but does anyone have any more info about getting the overdrive working correctly?

03-21-2015, 10:39 AM	#2
beanyard Registered User Join Date: Mar 2011 Location: Idaho Falls, Idaho Posts: 247	Re: 55 second series 3 speed overdrive questions There are 4 components. Kick down switch, governor, solenoid, and relay. There are wiring diagrams on the web. Use search terms like 55 chevy Borg Warner overdrive. A place called 5th avenue parts garage carries parts an has some know how as well. My 59 has this setup in operating condition. __________________ 1959 Fleetside Big Window Long Box Standard Trim soon to be Deluxe 1953 GMC Carryall Suburban Last edited by beanyard; 03-21-2015 at 10:56 AM.

03-21-2015, 10:54 AM	#3
whitedog76 Registered User Join Date: Jan 2014 Location: Peoria, IL Posts: 1,450	Re: 55 second series 3 speed overdrive questions Here's a factory service manual for the overdrive unit. Should be the same. http://studebakerclubs.com/NorthGeorgia/Overdrive.pdf These guys are your parts source. http://fifthaveinternetgarage.com/overdrive_parts.php



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