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  • black widow
    started a topic black widow

    black widow

    In need of a quick question answered anyone. On a H.O 383 what's the best size throttle body to run on this motor also the accurate size injectors to run to get the best performance out of this motor I hear you can run 350 injectors but they'd be at there maximum and I'd have to cut the fuel pressure back to like 14.

  • derbydad276
    replied
    come to the 21 century !!! you will thank me

    http://www.jegs.com/i/Chevrolet+Perf...1358K/10002/-1

    1970's technology
    http://www.jegs.com/i/Blueprint-Engi...56#moreDetails


    or go this way this is from www.car-part.com

    pick up a stand alone wire harness from (Howell )

    http://howellefi.com/gm-ls-series-pr...-en-2-3-4.html

    ~~2004 Engine
    Chevy Truck Silverado 2500
    6.0,EFI,AOD,RWD RUN GOOD J. C.
    92,014 miles A D512
    $1900 .00 + $1000.00 for trans
    Car Shoppe USA-TN(Fayetteville) E-mail 931-433-9297 / 800-438-8086
    Last edited by derbydad276; May 3rd, 2014, 11:45 AM.

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  • Bob Holmes
    replied
    Injector sizing is based on the amount of horsepower you intend to make.

    I use the calculator on the RC engineering website to determine proper injector sizing.

    http://www.rceng.com/technical.aspx

    Be aware, however, that if you use a larger injector with a stock computer, you will undoubtedly have drive-ability problems. The computer still thinks there are stock injectors, not the new larger sized injectors. You need to have the ability to tune for the change in injector size.

    Leave a comment:


  • black widow
    replied
    Is this for your 1997 truck? GMPP offers a 383 crate motor that drops in with no changes required to the computer or fuel management system, or so they advertise it that way. http://www.jegs.com/i/Chevrolet+Perf...00393/10002/-1 This is just one place that sells it, Scoggin-Dickey is another if you'd feel better about buying it from an actual GM dealer.
    I'd been looking at jegs but they only offer the motor without the injectors nor the intake or throttle body they said id just switch my pullys which I'm running a serpentine setup use my intake off the vortex as well as the 350 injectors. Now I don't know about you but I will not put used parts on a new motor much less used injectors that i think are to small for the 383.

    Leave a comment:


  • black widow
    replied
    Is this for your 1997 truck? GMPP offers a 383 crate motor that drops in with no changes required to the computer or fuel management system, or so they advertise it that way. http://www.jegs.com/i/Chevrolet+Perf...00393/10002/-1 This is just one place that sells it, Scoggin-Dickey is another if you'd feel better about buying it from an actual GM dealer.
    Yeah its for my trk had it so long i hate to get rid of it so id just like to give ole blue some what of a makeover it's the custom coach series with the velvet seats , the wood grain and the works the spoilers package so it looks like it's lowered but it come from the fact that way. 68scott385

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  • black widow
    replied
    So your saying GM pref. Has the complete motor. Allready fully assembled whatever correct size injectors and throttle body I can just drop in.

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  • 68scott385
    replied
    Is this for your 1997 truck? GMPP offers a 383 crate motor that drops in with no changes required to the computer or fuel management system, or so they advertise it that way.


    http://www.jegs.com/i/Chevrolet+Perf...00393/10002/-1

    This is just one place that sells it, Scoggin-Dickey is another if you'd feel better about buying it from an actual GM dealer.
    Last edited by 68scott385; April 16th, 2014, 07:59 AM.

    Leave a comment:

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