NP241 speedo output conversion - The 1947 - Present Chevrolet & GMC Truck Message Board Network

68 TT · 11-30-2010, 05:17 PM

Has anyone changed an NP241C with the VSS output to a cable driven speedo output?

I have a cable driven NP208 and will be picking up a 90 Suburban with the NP241 as a drive train donor that has the VSS output. I need the cable drive to run the speedo as I don't want to install an electric speedo or the ECM in my truck.

Anybody done this?

I know the two share some parts and both have the same output spline count. Could it be as simple as a tail shaft housing swap?

I would just use the NP208 but it is a 27-spline and I need the 32-spline to mate up with the T-400 I am installing.

11-30-2010, 05:17 PM	#1
68 TT Still plays with trucks Join Date: Jul 2009 Location: Spokane, WA Posts: 3,556	NP241 speedo output conversion Has anyone changed an NP241C with the VSS output to a cable driven speedo output? I have a cable driven NP208 and will be picking up a 90 Suburban with the NP241 as a drive train donor that has the VSS output. I need the cable drive to run the speedo as I don't want to install an electric speedo or the ECM in my truck. Anybody done this? I know the two share some parts and both have the same output spline count. Could it be as simple as a tail shaft housing swap? I would just use the NP208 but it is a 27-spline and I need the 32-spline to mate up with the T-400 I am installing. __________________ miSSed opportunity - ground up creation of an AWD 1994 454 SS that never was http://67-72chevytrucks.com/vboard/s...d.php?t=795577 69 C10 shortbed stepside 400 small block - built like what a super sport truck could have been 69 K20 lwb TBI 350 4L60E NP208 14-bolt Dana-44 w/disc 68 Camaro SS / RS 500hp 439 inch roller cam big block 4L80E 79 Malibu TPI 350 4L60 w/ Z28 steering & sway bars



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