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Thread: Larger injectors for a black top engine

  1. #1
    Forum Member 1st year Apprentice
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    Default Larger injectors for a black top engine

    I am aware that 440cc and 550cc injectors are available for the black top engine. However, for the race engine I'm planning to build with longer duration cams 550cc may not be enough since I don't want to have a duty cycle higher than 80%. With that in mind are side feed injectors available that are larger than 550cc that fit a black top intake manifold. If so, where can I obtain these? Any info positive or negative will be appreciated.

  2. #2
    Toymods Events Secretary Too Much Toyota trdee's Avatar
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    Default Re: Larger injectors for a black top engine

    sard sell side feed injectors, but unless you are running E85 and/or making north of 200kw, you should be fine with 440s/550s
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  3. #3
    Forum Member 1st year Apprentice
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    Default Re: Larger injectors for a black top engine

    TRDEE: Thx. for the feedback. Now, I need to find some 550cc injectors from a TT Supra.

  4. #4
    nuts Grease Monkey
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    Default Re: Larger injectors for a black top engine

    gen2 3sgte has side feed 440's. gen3 3sgte has side feed 540's.
    -Mark
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