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Thread: LS1 Swap into 1992 Chevy Pickup

  1. #1
    Super Moderator dave w's Avatar
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    LS1 Swap into 1992 Chevy Pickup

    I'm currently helping with the wiring for a LS1 Swap into a 1992 Chevy Pickup. There are multiple ways to wire the LS1 into a 1992 Chevy Pickup. I decided to de-loom the bulk head connector and re-purpose the service wiring (Bat + / Bat - / MIL / Fuel Pump / Ignition On-Start / ALDL) from the old TBI computer to use on the LS1 computer. The TBI system wiring was un-pinned from the TBI computer. The original bulk head mounting plate will be re-installed and resealed. The end goal of the wiring is look factory.

    dave w

    IMG_1386.jpg


    IMG_1387.jpg

  2. #2
    Fuel Injected! brian617's Avatar
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    Building a LS2 headed, BTR cammed 6.0 to do the same swap for a friend myself.
    89 K1500 Scottsdale 5.7L 5spd 3:42

    Build specs: 97 4 bolt main block 350ci, Eagle rotating assembly with flat tops and 4 valve reliefs, Dart 165cc/67cc Iron Eagle heads, Manely SS valves and springs 110lbs seat @1.7, GM Ram Jet cam 196/206 @.50 .431/.451, stock intake and throttle body, heads and intake gasket matched, Delco EP377 fuel pump @ 22 psi, 427 PCM.

  3. #3
    Super Moderator dave w's Avatar
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    Progress update pics.

    dave w

    Re-purposing a factory PCM Bracket.
    DSCN5697.jpg

    Re-purposing the factory bulkhead wire harness pass-through.
    DSCN5693.jpg

    DSCN5700.jpg

    Re-purposing the factory wiring for:
    MIL, VSS, Injector Fuse, PCM Battery & Ignition Fuses, Ignition Coil wiring, Fuel Pump wiring and ALDL wiring
    DSCN5696.jpg

    DSCN5698.jpg

  4. #4
    Fuel Injected!
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    Any updates?

  5. #5
    Super Moderator dave w's Avatar
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    Quote Originally Posted by dfarr67 View Post
    Any updates?
    Working on the Fuel Delivery System plumbing, will post pics when that's finished.

    dave w

  6. #6
    Fuel Injected! brian617's Avatar
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    What pump are you going to use Dave?
    89 K1500 Scottsdale 5.7L 5spd 3:42

    Build specs: 97 4 bolt main block 350ci, Eagle rotating assembly with flat tops and 4 valve reliefs, Dart 165cc/67cc Iron Eagle heads, Manely SS valves and springs 110lbs seat @1.7, GM Ram Jet cam 196/206 @.50 .431/.451, stock intake and throttle body, heads and intake gasket matched, Delco EP377 fuel pump @ 22 psi, 427 PCM.

  7. #7
    Super Moderator dave w's Avatar
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    Quote Originally Posted by brian617 View Post
    What pump are you going to use Dave?
    Basically, using a TPI pump to replace the TBI pump. The TPI pump is nearly identical, size wise, to the TBI pump.

    dave w

  8. #8
    Fuel Injected! brian617's Avatar
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    I was thinking that or the 96 5.7 Vortec pump. Both fit the hanger with minimal effort.
    89 K1500 Scottsdale 5.7L 5spd 3:42

    Build specs: 97 4 bolt main block 350ci, Eagle rotating assembly with flat tops and 4 valve reliefs, Dart 165cc/67cc Iron Eagle heads, Manely SS valves and springs 110lbs seat @1.7, GM Ram Jet cam 196/206 @.50 .431/.451, stock intake and throttle body, heads and intake gasket matched, Delco EP377 fuel pump @ 22 psi, 427 PCM.

  9. #9
    Super Moderator dave w's Avatar
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    Quote Originally Posted by brian617 View Post
    I was thinking that or the 96 5.7 Vortec pump. Both fit the hanger with minimal effort.
    See pic below for the pump we ordered. It hasn't been installed. About $120, with shipping fees.

    dave w
    Attached Images Attached Images

  10. #10
    Fuel Injected! PlayingWithTBI's Avatar
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    Quote Originally Posted by dave w View Post
    See pic below for the pump we ordered. It hasn't been installed. About $120, with shipping fees.

    dave w
    Here's what I used

    https://www.summitracing.com/parts/ado-ep381

  11. #11
    Fuel Injected!
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    I used the Walbro 255- pleased its quieter than the Carter. Curious where you taking air from, I used a 6.5 diesel filter assembly which takes air from the original location pass fender.
    Last edited by dfarr67; 05-07-2019 at 06:09 AM.

  12. #12
    Fuel Injected!
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    Last week I grabbed a 98 vortec truck's ecu mount, washer res, battery tray to fit on the drivers fender area.

  13. #13
    Fuel Injected! PlayingWithTBI's Avatar
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    Quote Originally Posted by dfarr67 View Post
    I used the Walbro 255- pleased its quieter than the Carter. Curious where you taking air from, I used a 6.5 diesel filter assembly which takes air from the original location pass fender.
    Right now I'm just using the full flow filter - I was thinking about cowl induction but I don't know if I want to spend that much$$$
    Attached Images Attached Images

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