question on a np 241 swap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

cjracing15 · 11-10-2007, 07:58 PM

I need some help on a swap I would like to do on my 86 K-10. It has the np 208 (of course), but the trans in the truck is on it's last leg and I have a 90 suburban for parts with a good trans and a nearly new np 241 that i would like to swap in. My biggest problem is that the suburban has the electric speedo and my truck of course has the cable driven speedo. If you guys have any suggestions I would really appreciate it.

Thanks, Jamie

**kwmech** · 11-11-2007, 10:08 PM

There is only 1 year that had the mechanical speedo for the 241----1989. Both in the K-5 and the suburban. If you can find those parts they will interchange with the 241 you have unless you find a complete t-case

**special-K** · 11-12-2007, 12:06 PM

I think www.abbott-tach.com might have what you need.They make what is needed for speedos when installing electronic trannies.

11-10-2007, 07:58 PM	#1
cjracing15 Registered User Join Date: Jan 2007 Location: Lexington, TN Posts: 1,427	question on a np 241 swap I need some help on a swap I would like to do on my 86 K-10. It has the np 208 (of course), but the trans in the truck is on it's last leg and I have a 90 suburban for parts with a good trans and a nearly new np 241 that i would like to swap in. My biggest problem is that the suburban has the electric speedo and my truck of course has the cable driven speedo. If you guys have any suggestions I would really appreciate it. Thanks, Jamie

11-11-2007, 10:08 PM	#2
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,628	Re: question on a np 241 swap There is only 1 year that had the mechanical speedo for the 241----1989. Both in the K-5 and the suburban. If you can find those parts they will interchange with the 241 you have unless you find a complete t-case

11-12-2007, 12:06 PM	#3
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: question on a np 241 swap I think www.abbott-tach.com might have what you need.They make what is needed for speedos when installing electronic trannies. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~



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