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What would be the best injectors for my setup?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Jishory, May 30, 2005.

  1. Jishory

    Jishory 1/2 ton status

    Jan 8, 2002
    Likes Received:
    Palmdale, CA
    i just swapped in a 350 with some small things done to it in place of my 305 that is running tbi. i know the 305 injectors arent the best for my application but would regular 350 ones work the best? i have an adjustable fuel pressure regulator on my throttle body i can mess with too. Thanks!

  2. dyeager535

    dyeager535 1 ton status Premium Member

    Dec 13, 2000
    Likes Received:
    Roy WA
    There are formulas for calculating the injector size needed for X HP, I assume for TBI as well as the ones I'm aware of for TPI.

    Your knock sensor is going to be different, as well as the PROM. The 350 and 305 were/are pretty different engines (heads, displacement of course) which probably makes a big difference on the truck engines. You might want to look into those differences as well as the injectors.

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