Speedo cable - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dubie · 08-13-2013, 09:25 AM

I went to plug the speedo cable in the other day and found it's now to short. The truck went from the inline 6 and saginaw 3 speed to a small block with a TH 350. It only needs to be about 4" longer than what I have right now. Anyone else run into this issue? and was there a good donor truck to pull one from? I was thinking a 67-72 might have a longer cable on it.

_Ogre · 08-13-2013, 01:00 PM

I've done the same conversion without a problem
Try running the housing through a lower hole
You can get a extension housing, just make the cable longer

oldcouple · 08-13-2013, 06:30 PM

Measure the length you need, go to the parts store and measure 66 and up, pretty sure they are all the same. I think I bought the entire assembly for a 67. You may need to change out the gears inside the trans, pull the cover if you do. They come in different colors based on the gearing. Info here.

http://www.tciauto.com/tc/speedometer-gear-calculator/

OrrieG · 08-13-2013, 07:45 PM

Early 70's (and maybe later) 4wd have a 12" extender on the regular truck cable because the drive in on the back of the transfer case which replaces the rear housing tranny output housing. It screwed right on the stock 59 cable.

08-13-2013, 09:25 AM	#1
dubie Registered User Join Date: May 2000 Location: Flin Flon, Manitoba, Canada Posts: 8,855	Speedo cable I went to plug the speedo cable in the other day and found it's now to short. The truck went from the inline 6 and saginaw 3 speed to a small block with a TH 350. It only needs to be about 4" longer than what I have right now. Anyone else run into this issue? and was there a good donor truck to pull one from? I was thinking a 67-72 might have a longer cable on it. __________________ My name's Tim and I'm a truckaholic My 56 Chevy shop truck build http://67-72chevytrucks.com/vboard/s...d.php?t=562795

08-13-2013, 01:00 PM	#2
_Ogre Registered User Join Date: Jan 2012 Location: Motown Posts: 7,680	Re: Speedo cable I've done the same conversion without a problem Try running the housing through a lower hole You can get a extension housing, just make the cable longer __________________ cool, an ogre smiley Ogre's 58 Truk build how to put your truck year and build thread into your signature shop air compressor timer

08-13-2013, 06:30 PM	#3
oldcouple Registered User Join Date: Nov 2011 Location: Winlock Wa Posts: 584	Re: Speedo cable Measure the length you need, go to the parts store and measure 66 and up, pretty sure they are all the same. I think I bought the entire assembly for a 67. You may need to change out the gears inside the trans, pull the cover if you do. They come in different colors based on the gearing. Info here. http://www.tciauto.com/tc/speedometer-gear-calculator/ __________________ Retired and too busy to work.

08-13-2013, 07:45 PM	#4
OrrieG Registered User Join Date: Jun 2006 Location: Idaho Posts: 8,800	Re: Speedo cable Early 70's (and maybe later) 4wd have a 12" extender on the regular truck cable because the drive in on the back of the transfer case which replaces the rear housing tranny output housing. It screwed right on the stock 59 cable. __________________ 1959 Chevy Short Fleetside w/ 74 4WD drive train (current project) OrrieG Build Thread 1964 Chevelle Malibu w/ 355-350TH (daily driver) Helpful AD and TF Manual Site Old Car Manual Project



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