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Thread: Power estimated for 388 sbc

  1. #1
    Junior Member APPRENTICE
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    Aug 2007
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    10

    Power estimated for 388 sbc

    Power estimated for 388 sbc
    I am close to finished rebuilding my engine and I need your predictable for the engine HP.
    Here my engine specification
    -Internal balance rotating kit form eagle with around 10.5:1 compression ratio.
    -AFR Cylinder head 210 intake runner
    -Luntati solid roller camshaft 243/249 advertise duration and 0.579"int. 0.585"exh. Lift with 110 lobe separation.
    -Victor Jr intake manifold.
    -750 double pump Holley Carburetor.

  2. #2
    My eingine is close, 11.0 to 1 and my cam is .600-.600 260-260 @ .050 and made 594hp and 540 ft lbs. I have the same heads and intake. I dod use a 830 Nascar Crab, but the engine only used 535 cfm, so the size carb should not matter

  3. #3
    Senior Member RACING JUNKIE THERATTLER's Avatar
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    Sep 2003
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    LICKSKILLET , MISSISSIPPI
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    boy , i bet that nascar "crab" really helped , just joking around,,you know , I have had a variety of drag cars over th last 40 years and I never once knew what the horsepower was in any of them ...I took them and raced them and if they didn't do what I want , I would work on them till they did..just take it out and have fun Paul
    ***IN GOD WE TRUST***GOD BLESS AMERICA******

  4. #4
    Senior Member SENIOR BUILDER chevynovaman's Avatar
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    Sep 2008
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    CENTRAL WISCONSIN
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    500 HORSEPOWER
    1968 CAMARO 302 4 SPD IN THE ROUGH
    1957 CHEVY FUEL INJECTED LS1 4L60E BEAUTY
    1962 CHEVY II NOVA 496 LETS RACE

  5. #5
    Senior Member MASTER BUILDER
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    Dec 2005
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    alberta,canada
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    I have a dart block 383
    13.54 cr
    ported afr 210 heads
    ported super victor
    970 cfm 4150 carb
    cam is 640 lift with 272 and 264 duration solid roller
    through 1 3/4 cramic coated headers
    peak torque was 525 @ 5300 rpm
    and peak hp was 593 @ 6700 rpm

    Guess what on another dyno i would might have made 640 hp, so what i used it for was a tuning tool

  6. #6
    Senior Member RACING JUNKIE
    Join Date
    May 2006
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    2,044
    Quote Originally Posted by maniac
    boy , i bet that nascar "crab" really helped , just joking around,,you know , I have had a variety of drag cars over th last 40 years and I never once knew what the horsepower was in any of them ...I took them and raced them and if they didn't do what I want , I would work on them till they did..just take it out and have fun Paul
    I agree, we've been getting alot of these HP requests latley, just look what bowhay' HP guess got us into.

    If in doubt go dyno the engine or put it on a chassis dyno after its in the car.

    I know your curious about your combo and so are we but really all we can do is guesstimate.

    Build it, stick it in there and drive it like you stole it.
    And like Paul said if it don't do it for ya, then pull it out and try something else.

    But if you just have to have a guess, I'd say somewhere around 500HP give or take 50.

    JMO>Cp
    ***IN GOD WE TRUST***


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