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

cablazer · 09-25-2007, 01:38 PM

New guy with question. My 4x4 Blazer originally had a manual tranny. The guy i bought it from had a 350 automatic installed but did not hook up the speedo cable. I removed the old cable it's about 6 feet long and not nearly long enough to reach the back of the trans case on the passenger side. Is this supposed to be a one piece cable? If so, does anyone know how long it is and where i can order one?
Thanks for any help!

Blazer1970 · 09-25-2007, 05:43 PM

The transfer case sits in the same position regardless of whether it is a TH350 or a SM465. The 465/205 uses a long adapter that puts the t-case back in the same spot as with the automatic. Even a 3 speed with a Dana 20 case has the rear output of the t-case in almost exactly the same position. All available combos used the same speedo cable. Otherwise I have no help for your problem.

69TowRig · 09-25-2007, 07:13 PM

Somehow I'm wondering if your transfer case is not the stock one.

1969k10stepside · 09-25-2007, 07:24 PM

All mine have the speedometer cable go on the drivers side with the stock transfer cases..

cdowns · 09-25-2007, 08:22 PM

measure how long you need and make sure that the ends of the cable you have now are proper to mount on speedo and transfer case then take the old cable with you to an auto parts store and tell them you need a speedo cable of XLENGTH and make sure the ends are the same as what you got

cablazer · 09-25-2007, 11:37 PM

I checked the ID plate on the T-case and it identifies NP-205 as the case. I'm wondering if the rear output retainer (the part that the speedo cable connects to) was placed in the wrong position the last time this T-case was rebuilt. Is this possible or does the T-case have them in both positions? I have attached a picture taken from the rear of my blazer on the passenger side for everyone to see. Thanks again for all the help!

**Yukon Jack** · 09-26-2007, 10:43 AM

Here's a pic of the SM465 and NP205 I put in my K5. I circled the speedo connection location. This combo was out of a different truck but this is the location I'm used to seeing on our years of trucks.

09-25-2007, 01:38 PM	#1
cablazer 70 4x4 k5 Blazer Join Date: Sep 2007 Location: Manteca, CA Posts: 40	Speedo cable length? New guy with question. My 4x4 Blazer originally had a manual tranny. The guy i bought it from had a 350 automatic installed but did not hook up the speedo cable. I removed the old cable it's about 6 feet long and not nearly long enough to reach the back of the trans case on the passenger side. Is this supposed to be a one piece cable? If so, does anyone know how long it is and where i can order one? Thanks for any help!

09-25-2007, 05:43 PM	#2
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,510	Re: Speedo cable length? The transfer case sits in the same position regardless of whether it is a TH350 or a SM465. The 465/205 uses a long adapter that puts the t-case back in the same spot as with the automatic. Even a 3 speed with a Dana 20 case has the rear output of the t-case in almost exactly the same position. All available combos used the same speedo cable. Otherwise I have no help for your problem. __________________ Tim Last edited by Blazer1970; 09-25-2007 at 05:43 PM.

09-25-2007, 07:13 PM	#3
69TowRig Senior Member Join Date: Jan 2005 Location: Raleigh, NC Posts: 894	Re: Speedo cable length? Somehow I'm wondering if your transfer case is not the stock one. __________________ -Chris Building a stripper, one part at a time: 1969 K5, 307, 3spd, 3 seats, hard top. Added Pwr Discs, Pwr Steering, Aux Battery, T-case Skid, Lighted Sidemarkers, HEI, Lock-Right Diff, ECE Class IV Hitch, 32" MT/Rs. Parts to Install: Hand Throttle, Console, Tow Hooks, Dual Horns, AM-FM, Dealer Swing-Away Tire Carrier, Gas Tank Skid. Also building a 1950 Willys CJ-3A and off-roading a 2001 Nissan Frontier on 1-Ton Portals...

09-25-2007, 07:24 PM	#4
1969k10stepside Registered User Join Date: Mar 2006 Location: USA Posts: 21,020	Re: Speedo cable length? All mine have the speedometer cable go on the drivers side with the stock transfer cases.. Last edited by 1969k10stepside; 09-25-2007 at 07:24 PM.

09-25-2007, 08:22 PM	#5
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Speedo cable length? measure how long you need and make sure that the ends of the cable you have now are proper to mount on speedo and transfer case then take the old cable with you to an auto parts store and tell them you need a speedo cable of XLENGTH and make sure the ends are the same as what you got __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

09-25-2007, 11:37 PM	#6
cablazer 70 4x4 k5 Blazer Join Date: Sep 2007 Location: Manteca, CA Posts: 40	Re: Speedo cable length? I checked the ID plate on the T-case and it identifies NP-205 as the case. I'm wondering if the rear output retainer (the part that the speedo cable connects to) was placed in the wrong position the last time this T-case was rebuilt. Is this possible or does the T-case have them in both positions? I have attached a picture taken from the rear of my blazer on the passenger side for everyone to see. Thanks again for all the help! Attached Images

09-26-2007, 10:43 AM	#7
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,683	Re: Speedo cable length? Here's a pic of the SM465 and NP205 I put in my K5. I circled the speedo connection location. This combo was out of a different truck but this is the location I'm used to seeing on our years of trucks. __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14



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