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Old 10-29-2014, 08:18 PM   #247
sdwolff98
Turning Wrenches Daily
 
Join Date: Sep 2003
Location: Gladewater Texas
Posts: 1,127
Re: 1964 GMC 3/4 ton build :D

Interestingly enough the medium truck harness in some very rare instances were installed on the 3/4 and 1 ton trucks as I found out when I got my harness in and stripped down. The truck I got mine from was definitely and 3/4 ton per the vin they sent me but interestingly enough the harness only had 2 o2 sensors wired in to it??? turns out the medium duty trucks hehe only were required federally to have 2 oxygen sensors in them lol not that I am complaining less holes in the computer connectors to have to seal up. Also the 8.1 engines do not use standard knock sensors they use some kinda funky connector style ones and I am working on tracking the particular pigtails down as we speak. BE WARNED ON THE MEDIUM DUTY HARNESS THEY DO NOT USE STANDARD COPPER JACKET WIRE FOR THE KNOCK SENSORS!!!!!. I AM NOT SURE WHAT THE DIFFERENCES ARE BETWEEN THE WIRE THEY USED AND THE STANDARD COPPER WIRE?? They used tefzel wiring 16 gauge on both the knock sensors for some reasons? what the differences between it and standard txl I am not sure?? Maybe someone can tell me as I am curious as to the reasons?

Sean
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Work! Play! Work work work! Money to play with. 64 GMC, 66 burb 4x4, and now 64 1ton money pits......ahhh life is good. Upcoming move back to Texas Dallas bound we are this september!!!

1964 GMC I1500 2wd (my baby) 8.1 allison 6 spd conversion Aka Smurf http://67-72chevytrucks.com/vboard/s...d.php?t=438342
2016 Ram Big Horn 4WD parts hauler
2010 Chevy HHR wife new car after the circled problem blew up!!!
1981 Ram D150 /6 auto Wife's sunday driver

Living outside Gladewater Texas now working in Longview at the hospital there

future project toys:
1966 Chevy K14 carryall aka Smurfette future project 283/auto overdrive http://67-72chevytrucks.com/vboard/s...d.php?t=551867
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