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Thread: dart heads

  1. #1
    Junior Member JOURNEYMAN
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    Jul 2004
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    dart heads

    whitch dart cast heads would be better to run on a 582?

  2. #2
    Senior Member EXPERT BUILDER
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    i know your asking about darts, but my engine guy told me those new brodix head hunters are great

  3. #3
    Junior Member JOURNEYMAN
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    i need cast iron heads

  4. #4
    Senior Member SENIOR BUILDER
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    Re: dart heads

    Quote Originally Posted by jl4020
    whitch dart cast heads would be better to run on a 582?
    If you need Iron you'll need the largest head they make, 345cc.

    even at that the port cross sectional area and airspeed will limit the power
    you can make, airspeed will be high.

    what's the application?

    John858, ask your engine builder if he's tried the RFD 24*, he might be surprised.

    Curtis
    ----------------------------------------
    Race Flow Development
    Simultaneous 5-axis CNC Porting
    http://www.raceflowdevelopment.com

  5. #5
    Junior Member JOURNEYMAN
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    well iam wanting it to pull vac. 15 at 1200 and all so make god # i know it all not in the heads but if i can find the right cam to go with a hoged out set of head i might be happy. i would like to have about 75o-800 hp i might be wishing too big.

  6. #6
    Senior Member EXPERT BUILDER
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    i will i'll see him this week hopefully,just dropped off carb,vac,fuel pump,etc. to get my 565 dynoed & i can't wait. where can you get the RFD 24* at ?

  7. #7
    Senior Member SENIOR BUILDER
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    You should be able to pull the vacuum based on cam more then anything,
    port size in the head is a sepperate issue, . what are you using this for?
    street car, drag car, 1800 lbs or 3800 lbs??????
    The stroke on a 598 makes a big demand on the cylinder head, .

    why Iron ??? class rules ???

    john,

    the RFD 24* - http://raceflowdevelopment.com/RFD-h...ock-victor.htm

    Just made 1098 hp with a single cast intake on a 565 @ 7800 rpm, ..
    6.9's in a dragster, . .
    1050 hp on a mild 582 with an un-ported cast intake, ran 7.0's @ 188
    in a 4 link dragster, will go 6.9's with tuning

    "pro" version with copper seats & titanium valves flows 490 cfm
    and is looking to make 1200 hp on a 522" for NMCA, ..

    Curtis
    ----------------------------------------
    Race Flow Development
    Simultaneous 5-axis CNC Porting
    http://www.raceflowdevelopment.com

  8. #8
    Senior Member RACING JUNKIE
    Join Date
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    Coldwater, MI
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    2,998
    Quote Originally Posted by cboggs
    You should be able to pull the vacuum based on cam more then anything,
    port size in the head is a sepperate issue, . what are you using this for?
    street car, drag car, 1800 lbs or 3800 lbs??????
    The stroke on a 598 makes a big demand on the cylinder head, .

    why Iron ??? class rules ???

    john,

    the RFD 24* - http://raceflowdevelopment.com/RFD-h...ock-victor.htm

    Just made 1098 hp with a single cast intake on a 565 @ 7800 rpm, ..
    6.9's in a dragster, . .
    1050 hp on a mild 582 with an un-ported cast intake, ran 7.0's @ 188
    in a 4 link dragster, will go 6.9's with tuning

    "pro" version with copper seats & titanium valves flows 490 cfm
    and is looking to make 1200 hp on a 522" for NMCA, ..

    Curtis
    How light was that 4 link car 980hp here 1985 and no where near 7.0's lol :wink: due you take trade ins
    David Lanning
    IHRA NHRA 387B

    Fleenor Racing Transmission
    419-280-1406
    Lanning Electric
    Complete Drag Car Wiring
    APD Race Engines
    www.apdracing.com

  9. #9
    Junior Member JOURNEYMAN
    Join Date
    Jul 2004
    Posts
    29
    it going in a 4x4 mud truck 3700pound iron head its the rules . hope to a 14-1 super victer jr and havent decide on carb? any thaout will help on any of the build. so it sound like dart345 will be the better head?

  10. #10
    Senior Member SENIOR BUILDER
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    David,

    You know wayne Horton, his 4 link car, 1880 lbs went 7.0's @ 188
    with a cast single 4, 2.4" valve version of the RFD 24* head on a
    598" aluminum block, made 1020 on a land & sea dyno. Terminator injection on alky.
    We are porting the intake and taking some of the conservative out
    of the car set up so it should be able to run a 6, but maybe not in
    the heat. It IS a bracket car, ..

    The 1098 hp engine is in a 2000lb tank, um I mean dragster, ..
    should run this coming week end but don't expect much in the heat.
    The 1098 number comes from a depac dyno, fairly conservative.

    Trade ins, .. well not really, but you know I've offered to help you
    out before, .. I can make your 385's do that.

    OK back on subject here, .. Iron heads on a mudder, I assume you
    are allowed to port them?
    Typical mud builds are engines that see a bunch of rpm, have fully
    ported heads & intakes etc. I'd start with the Dart 345 head and have them
    ported, you'll need at least 430 cfm..
    you'll need a super victor with some porting or you could try a Merlin X intake.
    You'll need to contact Patrick at Pro-systems carbs and get one of
    his 1600 cfm monsters, .. good custom roller cam.

    You should be able to make 1000+ hp.

    hope this helps.

    Curtis


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