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Thread: 383 high compression sbc tuning

  1. #1

    383 high compression sbc tuning

    hi guys hope you can help me with a problem i am having with my motor. its a 12-1 383 sbc 555 lift solid roller erson cam and 1.5 roller rockers, 210 cc intake runner rhs 72cc heads victor jr intake 750 mighty demon carb. problem i am having is getting it tune right this thing should be frying the tires off but it doesnt seem to have the power it should the carb is jetted 75 primary and 83 secondary. plugs look fine not to rich or lean not sure what the problem is any advice would be great thanks

  2. #2
    Senior Member RACING JUNKIE TheYellaBrick's Avatar
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    How old is the engine ?
    Year- Make - Model of car.
    Stick of auto ?
    What elevation are you at ?
    What is your timing set at ?
    What octane fuel you using ?
    What rear gear ratio ?
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  3. #3
    Senior Member SENIOR BUILDER
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    Quote Originally Posted by DrivingMissDD
    How old is the engine ?
    Year- Make - Model of car.
    Stick of auto ?
    What elevation are you at ?
    What is your timing set at ?
    What octane fuel you using ?
    What rear gear ratio ?
    Everything he said + what transmission and what does your converter stall

  4. #4
    Senior Member RACING JUNKIE
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    and how much you want for it. loljust kidding. but do need more info.

  5. #5
    fresh build, auto trans, 77 camaro, 410 gears, I am in pa, messing around with the timing haven't found the sweet spot yet, 110 racing fuel also have 75 primary and 83 secondary jets in carb 350 turbo trans 3000 stall

  6. #6
    fresh build, auto trans, 77 camaro, 410 gears, I am in pa, messing around with the timing haven't found the sweet spot yet, 110 racing fuel also have 75 primary and 83 secondary jets in carb 350 turbo trans 3000 stall

  7. #7
    Junior Member JOURNEYMAN
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    Sep 2005
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    what does the converter stall at from a dead stop. also my timing in my 388 stroker is 42 degrees total leed with a 650 holley flowed to 680 cfm by nickerson i'm at 11.5 to 1 static compression with dart iron eagle heads at a 200 runner the cam is a 625 in 610 ex lobe sep at 110, intake center line at 106 solid roller custom ground by lunati ,motor sits in 1970 camaro in full trim running 11.60 in good air at atco. i would try a smaller carb cfm to increse air speed fast air fast car goog luck joe g

  8. #8
    Junior Member APPRENTICE
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    wrightway is right convertor change is needed i know from experience
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  9. #9
    Senior Member RACING JUNKIE Swiley383's Avatar
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    Converter and check to make sure your timing pointer is right. Is the timing advance locked out?


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