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TBI motor setup. Am I leaving any thing out?

Discussion in 'The Garage' started by y5mgisi, Jul 23, 2004.

  1. y5mgisi

    y5mgisi 1 ton status

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    I plan on doing a motor build for the 90 sub in the not to distant futer and this is what i have come up with so far.

    383
    forged pistons (probly dished for about 9:1 compresion)
    LT1 conecting rods
    vortech heads(possibly ported and behive springed)
    edelbrock or GMPP tbi manifold(for vortech to TBI)
    454 throttle body
    adjustable FPR
    tri Y headers
    dual 2.25 inch exaust
    and a chip if needed
    and a comp cams 12-304-4 cam(700 to 4700rpm powerband and is said to be stock chip friendly)


    What do you think am i forgeting anything important? Will i need a chip? Any feed back would be cool for planing. /forums/images/graemlins/ears.gif
     
  2. Derf00

    Derf00 1/2 ton status

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    Fuel pump and a modified chip.
     
  3. y5mgisi

    y5mgisi 1 ton status

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    I have heard that when you use the 454 throttle body that you actually would want to turn the fuel presure down because the 454 injectors flow more /forums/images/graemlins/thinking.gif
     
  4. js4x4

    js4x4 1/2 ton status

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    Yeah, if you have a fuel tank from a GM that had TBI, the fuel pump is in the tank. If not, you can pick up an external.
     
  5. y5mgisi

    y5mgisi 1 ton status

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    yep the tank is an origanl that allready has the pump and baffle from the TBI /forums/images/graemlins/cool.gif
     
  6. sled_dog

    sled_dog 1 ton status

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    yes 454 injectors are 85 lbs/hr vs the 55 of a standard 350 injector.
     

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