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Thread: 1983 C10 LWB 6.2 diesel to LQ4 6.0L and 4l80e swap

  1. #1
    Join Date
    Oct 2011
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    3

    1983 C10 LWB 6.2 diesel to LQ4 6.0L and 4l80e swap

    I've been lurking for a while, but after lots of fighting with the 6.2 diesel in my '83 C10, I decided that it's time for a 6.0 swap.

    Last weekend I picked up an '05 LQ4 and 4l80e with 75k miles on it and complete with computer and harness. It came from a local body shop that bought the truck to swap the sheet metal onto a rolled 4x4. The body shop pulled a few pieces to replace what was damaged on the other truck, including the accessory drive system, the throttle body, the coils and a couple spark plug wires, and 1 injector. I'm not too bothered about the tb, as I was considering switching to a cable throttle body, but I'll need to replace the rest.

    The truck has dual tanks, which I'd like to keep, a th350 tranny, and does not have A/C, which should make the swap a little easier.

    I've been wanting do do a LS swap for years now, and I guess it's time!
    Last edited by Box; 10-13-2011 at 11:44 AM. Reason: more info

  2. #2
    Join Date
    Sep 2007
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    Broken Bow, OK
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    I would keep the DBW TB, just get the pedal, TAC and harness from the donor truck. Stock DBW throttle bodies for a 04 are a dime a dozen, same with the injector.

    Good luck, post up some pics!

  3. #3
    Join Date
    Oct 2011
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    3
    Quote Originally Posted by PitchBlackC3 View Post
    I would keep the DBW TB, just get the pedal, TAC and harness from the donor truck. Stock DBW throttle bodies for a 04 are a dime a dozen, same with the injector.

    Good luck, post up some pics!

    Here's a couple of pics, as purchased. I need to get matching rims and tires for it, as well as some factory hubcaps.

    I got the diesel running again today, only to have it refuse to start an hour later! This truck is starting to sour me on diesels.

    I read up today on cable tb swaps. They look pretty work and wiring intensive. I guess I'll look around and see which I can find.

    Is it absolutely necessary to have a baffled tank for the fuel pump swap, or will a normal gasoline fuel tank work?

    Tim
    Attached Images

  4. #4
    Join Date
    Sep 2007
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    Broken Bow, OK
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    A running 6.2 will sour you on diesels!

    The factory 88-98 tanks didn't have baffles in them, so I think you would be good as long as you get good pick up. Look into the tank/sending unit for a 87 TBI truck. That should work well with an upgraded pump for the higher fuel pressure.

  5. #5
    Join Date
    Oct 2011
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    3
    Here's the LQ4 and 4L80e





    They're pretty dusty, but the picture makes them look even worse!

  6. #6
    Join Date
    Dec 2004
    Location
    San Antonio, TX Area
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    1,757
    This going to be a good little project.
    "ALisSa1 Silverado"
    1990 Chevrolet RCSB 2002 Chevrolet Camaro LS1/4L60E
    Scrimpin Ain't Easy
    ( . Y . )


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