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Thread: Will 91-93 4L80e work without issue with 7427 from 95 van?

  1. #1
    Fuel Injected!
    Join Date
    Dec 2012
    Age
    46
    Posts
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    Will 91-93 4L80e work without issue with 7427 from 95 van?

    I thought I had a 96 4L80e, but now am finding out its a 91-93 early version. Is there any reason it wont work with my PCM, or anything I would need to change to make it work?

    Thanks,

    Jim
    1978 Cherokee chief
    Current status = BACK under construction
    modified body w/TJ flares
    AMC 360, junkyard 7427 TBI w/ 4L80e
    NWF doubler w/
    upside down 203
    SOA D60/14B-FF
    custom shackle flip w/F150 springs
    H1 wheels + (for now) tires


  2. #2
    Fuel Injected! gregs78cam's Avatar
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    May 2011
    Location
    N. Idaho
    Posts
    767
    I am using an early one (I believe) and it is working fine with the '7427. I think the main thing is to make sure you use the right .bin so your TCC control scheme is correct for the trans.
    1978 Camaro Type LT, 383, Dual TBI, '7427, 4L80E
    1981 Camaro Z-28 Clone, T-Tops, 350/TH350
    1981 Camaro Berlinetta, V-6, 3spd
    1974 Chevy/GMC Truck, '90 TBI 350, '7427, TH350, NP203, 6" lift, 35s

  3. #3
    Fuel Injected!
    Join Date
    Dec 2012
    Age
    46
    Posts
    30
    Ug, more to figure out. I should have dug up all my parts from one vehicle. But so far I'm only out $50, because most of it was free.

    Harness and tbi from a 91 C1500
    Pcm from a 95 p30 van
    4L80 from ?? early model 91-93

    Talk about a bunch of mismatched junk.

    Jim
    1978 Cherokee chief
    Current status = BACK under construction
    modified body w/TJ flares
    AMC 360, junkyard 7427 TBI w/ 4L80e
    NWF doubler w/
    upside down 203
    SOA D60/14B-FF
    custom shackle flip w/F150 springs
    H1 wheels + (for now) tires


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