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TBI upgrade?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by grtwhite, Sep 2, 2000.

  1. grtwhite

    grtwhite 1/2 ton status

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    Location:
    Macungie, PA
    Got an 88 Blazer with a stock TBI. Lookig into upgrading to a high flow TBI unit. Was interested if anyone has done this, and what are your thoughts? Have seen units from Holley, Turbo City, and Arizona Speed & Marine. Someday when the motor goes, would like to upgrade to a performance crate motor, like the ZZ4. Heard guys having difficulty with TBI's and crate motors, so that makes me concerned to upgrade and run into trouble down the road.
    Thanks! - Jay
     
  2. realsquash

    realsquash 1/2 ton status

    Joined:
    Jul 12, 2000
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    Location:
    SE WI
    On a stock motor you will get very little from more air or fuel flow. When you build it up or replace it with a ZZ3 or whatever, you will need to do more than change the TBI unit to make it work correctly. I would wait until you get the new crate motor ready to install.

    Squash
    http://www.trailrunners4x4.org/users/realsquash
     

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