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  1. #1
    Join Date
    Jan 2008
    Posts
    995

    Default Vortec motor HP?

    I just finished building my circle track motor and am very curious where I stand in terms of HP and torque at the flywheel.

    360 ci
    Eagle cast crank
    forged rods (can't remember what brand)
    JE forged flat top pistons
    Vortec 062 heads angle milled 2* w/ 5 angle valve job 2.02 valves (no port work)
    Super Victor Intake untouched.
    750 Alky Carb by Holley
    MSD ignition
    Running on Methanol
    .480 lift custom Comp Cams grind mechanical flat tappet cam
    Full Roller Aluminum Rockers
    solid lifters Comp

    I know the crank is the weakness of this motor but it's what I had at the time of the build. This will turn into my backup motor when I can afford something nicer after Xmas.

    Thanks for any answers.
    Last edited by soonersublime; 10-28-2010 at 11:55 AM.

  2. #2
    Join Date
    Jun 2010
    Location
    Santa Land
    Posts
    554

    Default

    How much did you have taken off the heads? Did you cc the chambers when you were done? If yes what are they? Do you know your compression ratio?
    My sarcasm is a pre-emptive strike to your stupidity!!

  3. #3
    Join Date
    Jan 2008
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    995

    Default

    I'm guessing w/ 2 degree angle mill I would have 50cc heads but I could be wrong. JE flat tops are somewhere around 10.6:1 w/ a 64cc head w/ a not so thick head gaskets (not sure of thickness but not the thinnest and not the thickest).
    Last edited by soonersublime; 10-28-2010 at 12:46 PM.

  4. #4
    Join Date
    Jan 2008
    Posts
    995

    Default

    I'm guessing
    490 HP @ 6400, 470 ft lbs @ 5200

  5. #5
    Join Date
    Dec 2007
    Posts
    1,039

    Default

    I once had a similar engine, Eagle rotating assembly, 40 something CC angle cut Vortecs w/1.94 valves, flat tops, hydraulic cam, with aluminum intake(602 crate intake), made 430hp.

  6. #6
    Join Date
    Jun 2010
    Location
    Santa Land
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    554

    Default

    I would put you in the mid 400 range.
    My sarcasm is a pre-emptive strike to your stupidity!!

  7. #7
    Join Date
    Nov 2007
    Posts
    509

    Default

    That engine would fit the rules at a track in oklahoma I've raced at.On gas it should be in the 470 to 500 range.Alky only added 20hp.

  8. #8
    Join Date
    May 2008
    Posts
    574

    Default

    360 C.I. unported vortecs and a low lift hyd. cam depending on the cam and how the engine is tuned, 450 - 470 HP /430 - 450 TQ on meth. No mention of LC/ Dur. @.020 or .050. Maybe a lot of cylinder pressure, maybe a resticted cam.
    383's with nice mech. cams and 13.5-1 comp. make 520ish with these heads depending..........
    But , you should be smoother in the slick with your combination than a 383.
    Vortec heads like to come in hard in midrange. Dont know what class youre running, but with this combo, the midrange will get your attention for sure.
    Good luck

  9. #9
    Join Date
    Jan 2008
    Posts
    995

    Default

    Quote Originally Posted by RCJ View Post
    That engine would fit the rules at a track in oklahoma I've raced at.On gas it should be in the 470 to 500 range.Alky only added 20hp.
    Outlaw, Tri-State, Salina, and West Siloam allow these motors. The BMS boys are a hair over 500 w/ Meth.

    I

  10. #10
    Join Date
    Nov 2007
    Posts
    509

    Default

    Yeah thats where I raced at.I don't race in that class anymore.The place that helps me charges $400 for dynoing your motor.Once your motor is on the dyno they will try anything you want.I had my motor on for aweek pulled it off the dyno put a street motor, put mine back on and pulled some more.

  11. #11
    Join Date
    Jun 2007
    Location
    LAS VEGAS, NV.
    Posts
    791

    Default

    how bout this setup with a 520 256 @50 cam 11.5:1 with a performer rpm airgap intake on gas?
    Last edited by DANNY; 11-28-2010 at 02:58 PM.

  12. #12
    Join Date
    May 2007
    Location
    PA
    Posts
    844

    Default

    Those numbers might work for the lift, but I think we may have a problem trying to get any cylinder pressure when it comes to those duration numbers just kiddin with ya... what is the duration at .050?
    Josh K.

  13. #13
    Join Date
    Jun 2007
    Location
    LAS VEGAS, NV.
    Posts
    791

    Default

    think its 252/256 @ 50

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