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Who's running a 454 TBI UNIT on a 350 TBI motor?

Discussion in 'The Garage' started by DPI, Sep 10, 2003.

  1. DPI

    DPI 1/2 ton status

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    Who\'s running a 454 TBI UNIT on a 350 TBI motor?

    What did you have to do to get this to work? /forums/images/graemlins/ears.gif
    I heard you can enlarge the 350 TBI intake to accommodate the large bore of the 454 TBI unit. Is this all you have to do to run the 454 TBI? Did you have to make any chip changes?

    Any information or links would be GREATLY appreciated! /forums/images/graemlins/thumb.gif
     
  2. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

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    Re: Who\'s running a 454 TBI UNIT on a 350 TBI motor?

    I have a 1989 454 TBI sitting on my work bench right now. As long as the heat adaptor is on the TBI it looks like it lines up perfectly. I held a 350 Intak to carb gasket up to it and it looks right.
     
  3. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

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    Re: Who\'s running a 454 TBI UNIT on a 350 TBI motor?

    Nevermind....I'm not paying attention to what you asked. The 454 is the same pattern as a 350 intake with a Quad.
     
  4. bowtiepower00

    bowtiepower00 1/2 ton status

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    Re: Who\'s running a 454 TBI UNIT on a 350 TBI motor?

    It will bolt onto the manifold, but due to the larger injectors some chip changes will have to be made.
    Third gen BBS has lots of tech in the TBI and PROM sections...
     
  5. DPI

    DPI 1/2 ton status

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    Re: Who\'s running a 454 TBI UNIT on a 350 TBI motor?

    Great site! Thanks - There is a ton of information under the TBI forum. I never new a single plane intake would perform better with the TBI in all rpm ranges than a dual plane... /forums/images/graemlins/eek.gif
    Anyway, great info - Thanks! /forums/images/graemlins/thumb.gif
     

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