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Thread: Newb here, building TBI-vortec head, 383

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    Fuel Injected!
    Join Date
    Apr 2017
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    163

    Newb here, building TBI-vortec head, 383

    Newbie from Vancouver, WA here. First time posting but have been lurking for a while, though and also been working with Dave W as I'm lucky to live in the same town. He's burned me a "start up" chip for the build described above. More specifics:

    - Vehicle: 1991 3/4 ton 4x4 suburban. Last of the "square bodies" and only one with a 4L80e tranny. Dave W had tuned it for the PO as well.

    Engine that's about ready to get dropped in:

    - block from a '90 3/4 ton burb, 4-bolt main.
    - Eagle stroker cast crank
    - bored .030 over, true 383 cubic inches
    - KB pistons
    - stock 5.7 rods, resized and new bolts
    - vortec 062 heads, locally rebuilt
    - 1.6:1 roller tip rockers
    - L31 cam and full roller valve train taken from a core vortec 350
    - GMPP vortec spread-bore intake

    Induction:

    - reman and bored 46mm TB
    - 454 injectors, 70 lbs/hr (per Dave W recommendation)
    - spread-bore to TBI adapter from early 454 truck
    - EGR delete

    Engine just about fully dressed and ready to go in, bracketry for top end accessories on GMPP intake has required some creativity. IMG_5188.jpgIMG_5183.jpgIMG_5176.jpgIMG_5186.jpg
    Last edited by Daveo91; 04-09-2018 at 10:07 AM.

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