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#1 |
Registered User
Join Date: Feb 2007
Location: Memphis MI
Posts: 1,851
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Square body with 4l60E - Speed and Range Switch
It's been a while but I'm still here with more annoying questions!
Project - 198x K2500, Straight 6 250, NP241 from 89 K5. Trans - 1993/94 4L60E. Essentially pulling entire wiring harness out of a 1994 K10 4.3 V6 to convert my old straight six to TBI, and get an ECM that will run the 4L60E. Question I have is with the shifting. ECM needs speed signal and range switch to manage the gears correctly. The 94 has those, but I think the 89 NP241 does not have the exact same set up for range switch, and it's a cable speedo. And I can't swap the cases directly (wrong side drop). Anyone got a great idea? I like my cable drive speedo but it's not a deal breaker if I can figure out everything else. Thanks!
__________________
1987 2 ton ![]() 1982 ![]() Dad's 1981 ![]() Plus a mess o' tractors |
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#2 |
Senior Member
![]() Join Date: Mar 2003
Location: Colfax-California
Posts: 8,554
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Re: Square body with 4l60E - Speed and Range Switch
Speed sensor that plugs into the cable to give the signal to the ecm.
https://www.summitracing.com/parts/a...xoC4a4QAvD_BwE |
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#3 | ||
K5Camper
![]() Join Date: Mar 2004
Location: Pueblo, CO
Posts: 1,513
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Re: Square body with 4l60E - Speed and Range Switch
Quote:
Quote:
https://www.summitracing.com/parts/dak-sen-01-4160 You need this converter box to change the signal to the correct pulse per mile the factory GM computer needs to function right. https://www.summitracing.com/parts/dak-sgi-100bt
__________________
Rob Z. 1975 K5 350/465/205/D44/12b 4" lift on 35's- RIP 1991 K5 8.1L/NV4500/241/D44/14b FWC Camper |
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