Originally posted by lt1s10
if you can afford it chevy5 the store bought harness is nice, but i used the factory harness on mine just so i could say i did it and the lt1 harness was about 600.00, but it turned out ok. if you get me all of the info. about what car, motor size and trans. youve got, ill get you a wiring diagram, its only about 3 hot wires that goes to the computer.


you could me my new best freind. the harness is out of a 90 chevy pickup with a 350 and a 700R4 trans and it will be going to a 348 with a 700R4 trans. the computer serv. no. is 1227747 and the trans has a speed sensor, not the spedo cable.what sensors i need to keep and what ones to get rid of would also be very helpful. i know i need the O2 , knock , oil pressure, temp and map sensors but there is others i dont know about . thank you very much for any info.