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Thread: Vacuum diagram

  1. #1

    Default Vacuum diagram

    Does any one know where I can get a vacuum diagram for a 1990 suburban 350 TBI. I would like to run new lines. I bought the truck over six months and the vacuum situation is sad. Lines going in every direction, and golf tees in half of them (previous owner). Any help would be awesome.
    -Tim M.-

  2. #2


    any smog shop will have them, now tring to get a copy of them might be an issue for some....mike
    Michael Collins
    1993 4X4 Suburban
    many other toys as well

  3. #3


    Do you have a vacuum diagram under your hood?
    6" BDS Suspension Lift / 3" Body Lift / 38x15.50x20 Dick Cepek FCII on 20x12 Dick Cepek DC-1 (summer set) / 325/80/16 Dick Cepek FCII on 16x8 American Racing Diamond Back (winter set) / Hypertech Power Programmer III / Air Max Spiral Flow Air Intake / / 80mm Granetelli MAF / 80mm BBK Throttle Body / Helix Power Tower Plus Throttle Body Spacer / 2 Turbonators / Edelbrock Shorty Headers / 30 Series Flowmaster / 4.56 gears /

  4. #4

    Default Under the hood

    There isn't anything that resembles a vacuum diagram, I have yet to try a smog shop. I haven't had much time to get to that project. Thanks for the replies.

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