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350 to 454 TBI swap

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Frogg89, Mar 6, 2004.

  1. Frogg89

    Frogg89 Registered Member

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    I have a post in the wanted for a TBI because I broke my housing. Does anyone know if I could use a 454 TBI? Would it mess up my computer or anything like that?

    Thanks, Ken /forums/images/graemlins/k5.gif
     
  2. k20

    k20 3/4 ton status

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    well the bores are bigger, and if u use the 454 injectors it would probably flood your engine out.
     
  3. skratch

    skratch 1/2 ton status

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    Swap out your injectors and regulator and use the 454 body, it should flow around 670cfm, just like the Holley unit but at a lot less cost.

    There have been several threads about getting the adjustments right after the swap but it is well worth it from everything I've read. I keep my eyes peeled for them everytime I'm at a slavage yard, but most of the time they have already been pulled.
     

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