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04-21-2019, 09:18 AM
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#1 |
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Registered User
Join Date: Mar 2013
Location: Waukesha, WI
Posts: 15
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Overdrive install
69 C10 1/2 ton sb stepside 250cc/373r; R10 BW overdrive; all wired up but can't connect the speedo cable; unverified but they told me the OD came out of a chevy pick; anybody got a clue?
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04-21-2019, 09:24 AM
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#2 |
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Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,515
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Re: Overdrive install
What you got for a connector?
Pics help. |
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04-21-2019, 11:28 AM
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#3 |
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Registered User
Join Date: Mar 2013
Location: Waukesha, WI
Posts: 15
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Re: Overdrive install
Original connector.
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04-21-2019, 11:34 AM
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#4 |
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Senior Member
 
Join Date: Oct 2009
Location: Godley, TX
Posts: 17,934
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Re: Overdrive install
I'm not trackin, why can't you connect it? Is it just too short? Or is the square drive in the speedo drive bullet rounded out?
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04-21-2019, 12:38 PM
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#5 |
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Registered User
Join Date: Mar 2013
Location: Waukesha, WI
Posts: 15
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Re: Overdrive install
I'm thinking the BW OD uses a different connector? or speedo cable? The OD works off a signal from the governor on the OD at 28 mph. If the speedo cable doesn't connect then the OD won't kick in. I can get the connector to thread on but it's not tight...wobble wobble turkey neck.
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04-21-2019, 01:03 PM
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#6 |
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Senior Member
Join Date: Mar 2003
Location: Colfax-California
Posts: 8,391
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Re: Overdrive install
Looks like it will connect up. Sure it's turning from the inside?
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04-21-2019, 01:29 PM
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#7 |
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Registered User
Join Date: Mar 2013
Location: Waukesha, WI
Posts: 15
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Re: Overdrive install
maybe just need a new speedo cable. sounds like it should connect but the speedo drive bullet is rounded out. going to the spring swap meet. never been. maybe find one there.
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04-21-2019, 04:48 PM
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#8 |
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Senior Member
Join Date: Oct 2009
Location: Godley, TX
Posts: 17,934
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Re: Overdrive install
If it's rounded out, then a new one is required. If you just can't get it to seat, then it's helpful to have someone spin the speedo end of the square drive while you apply very light pressure at the trans connection until you feel it drop into the drive and then it's easier to screw on the cable retainer. If working solo, just get the retainer cap started, then go spin the speedo end of the square drive yourself - will be obvious if when it seats in the trans end.
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04-21-2019, 09:56 PM
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#9 |
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Post Whore
Join Date: Feb 2016
Location: Portland Oregon
Posts: 10,805
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Re: Overdrive install
It is likely that you will need a cable drive adapter to make it work. There are a half dozen different styles of speedometer drives. See below for an example.
https://transmissioncenter.net/shop/...mall-part-kit/
__________________
Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help.  RIP Bob Parks. 1967 Burban the WMB,1991 S(stink)-10 Blazer,1969 GTO, 1970 Javelin, 1952 F2 Ford 4X4, 29 Model A, 72 Firebird. 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377 |
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04-21-2019, 10:06 PM
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#10 |
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Registered User
Join Date: Dec 2013
Location: Dunwoody,Ga
Posts: 443
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Re: Overdrive install
I installed a GM OD tranny from a 69 into my 70 C10. The cable worked fine.
The governor doesn't care if speedo is hooked up or not. |
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