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  1. C

    Vacuum Hose ID Dimensions - 1980 Trans Am 4.9L

    Did you figure it out? I have the same issue.
  2. C

    Vaccum Hose Diameter?

    It's a 1980 4.9L Turbo. :-)
  3. C

    Vaccum Hose Diameter?

    1980 Indy Pace car that I am raising from the dead. Does anyone know the correct size for the vacuum harness on the motor? I'd check mine, but the hoses are too rotten and fall apart in your hand. Thanks! Capt Chaos