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A 500+ hp Blown Flathead-Is It Even Remotely Possible? VIDEO!

Discussion in 'The Hokey Ass Message Board' started by 38FLATTIE, Apr 12, 2012.

  1. Yeah sorry, I was referring to the one in the original post I wasn't thinking raidmagic was maybe asking about top header on the blown flathead dragster.

  2. tfeverfred
    Joined: Nov 11, 2006
    Posts: 15,792

    Member Emeritus

  3. badshifter
    Joined: Apr 28, 2006
    Posts: 3,344


    Awesome job! When you gonna run it?
    I'd rather see a HAMBER make 500 hp than a multi-million dollar consortium make 700 hp. And I like the Ron Main/George Poteet Flatfire deal, it's just that it's a little out of reach for me. Good job 38Flattie.
  4. And NO Arduns are NOT a flathead....................
    and yes Buddy's flat Cad is awsooooommmmeeee!!!!!!!!!!!!!!!!
  5. 570 horse is impressive out of anything!
  6. vickswhips
    Joined: Feb 22, 2006
    Posts: 43


    You just made my flatty look like total crap, thanks :)
  7. NMCarNut
    Joined: Nov 28, 2009
    Posts: 632


    Way cool! Just curious, you have any results at lower RPMs and any boost numbers?
  8. OoltewahSpeedShop
    Joined: Oct 18, 2007
    Posts: 3,103


    Congrats. That things gonna haul ass.
  9. greg32
    Joined: Jun 21, 2007
    Posts: 2,095

    from Indiana

    Looking at the dyno screen, air/fuels at 10, so Id say thats alcohol. No BSFC numbers also. This is impressive.
  10. :confused:
    I thought he was running a gas class?
  11. We're running on gas - 570 hp and she'd do quite a bit more if we threw more boost at her.

    Some numbers:

    RPM, Torque, HP
    4000, 552, 420
    4500, 561, 480
    5000, 560, 533
    5500, 544, 570

    Blower, 1 to 1, 14.2 lbs

    It would be scary to see what more boost would deliver - then how about boost, methanol and some nitro in it

    Great stuff to see all the work deliver some solid results. Makes us all proud of what an old Cadillac can do!

  12. I heard he was pushing 600 to 700, and had to detune it for BVille. I'm sure he was not running on Gas - His boost levels had to be 25lbs+
  13. I've heard he has pushed up above 900 - on pop though
  14. 48 Chubby
    Joined: Apr 29, 2008
    Posts: 1,014

    48 Chubby
    Member Emeritus

    Most impressive. Not only is this old Caddy built to make big power, it's built to last a while as well. Bonneville engines are way more highly stressed than drag race engines, so the ultimate power numbers are not really comparable. No matter how much power you make with smarts and hard work, some one else can make more with gobs more money. It's the way of the world.
    Bored&Stroked and Flat Cad Racing used good sense and sound engine building techniques to build a honest 500 plus hp engine from an antiquated engine design.
    Kudos gentlemen, you deserve it because you worked for it.

  15. That's damn impressive, especially on gas.
    How much boost would you expect this engine to ultimately handle?
  16. TV
    Joined: Aug 28, 2002
    Posts: 1,451


    I think you guys have worked very hard, and now have what you want. Good on ya.--TV
  17. Tman
    Joined: Mar 2, 2001
    Posts: 34,625


    That thing would make a certain lakester fly ;)
  18. Give him the bolt pattern Dale so he can set up the lakester for both...........
    what was really great was to see the fruits of the labor and time come together without any real glitches..... an accomplishment that few can attain....... Great job Buddy, Dale, Don and everyone who had a hand in this deal..............
    The smile on Buddy's face was..........well Priceless!
  19. 38FLATTIE
    Joined: Oct 26, 2008
    Posts: 4,350

    from Colorado

    Trent, I don't know if it will fit! We have an offer to go in a 30 inch lakester, and I don't know if it will fit there either!
  20. Tman
    Joined: Mar 2, 2001
    Posts: 34,625


    In our lakester it would look like Fast Freddies with heads and exhaust hangin out the sides with most of the blower sticking out of the body!:eek: Engine room is 20"w x 30" tall
  21. 38FLATTIE
    Joined: Oct 26, 2008
    Posts: 4,350

    from Colorado

    Heads are 26" wide, block is about 35" long with snout girdle. 32" tall to top of exhaust manifolds-takes a Ford FE bellousing!
    Last edited: Apr 18, 2012
  22. little skeet
    Joined: Jan 27, 2008
    Posts: 309

    little skeet
    from huston

    Watched the video....How is that video proof of 500 Horsepower?
  23. Tman
    Joined: Mar 2, 2001
    Posts: 34,625


    Look at Buddys screeen shot of the dyno monitor.:rolleyes:

    Plus the other thread has a longer vid.
  24. fenderless
    Joined: Mar 31, 2006
    Posts: 1,286

    from Norway

    It's sooo impressive what The Flatcad crew has accomplished!
    I would love to see it on Alcohol:D! I will suspect it would be the most powerful flathead ever!
    We sure hope to be near the 500 hp limit ourselfs, but that will be on alcohol:)! We should be able to set some sort of european record:D!?


  25. beast......that is all
  26. BuiltFerComfort
    Joined: Jan 24, 2007
    Posts: 1,620


    Faked, I tell you, faked.

    To answer the question posed in the thread title, no it's not possible. Sorry. Won't happen. Not ever. Don't let those photoshopping, video-editing cowboys tell you any different. My neighbor's cat told me so and I believe her.

    (ok guys good job. Keep the boost down & keep it together through the measured mile)
  27. Little Skeet..........
    Open your eyes 570 HP 564.5 Torque..............

    And Go Kjell hope ya get it!!!!!

  28. A Boner
    Joined: Dec 25, 2004
    Posts: 6,148

    A Boner

    There have been lots of "blown" high horsepower flatheads!
    Last edited: Apr 13, 2012
  29. 38FLATTIE
    Joined: Oct 26, 2008
    Posts: 4,350

    from Colorado

    Lots is a relative term-and they were not Cadillac flatheads!
  30. A Boner
    Joined: Dec 25, 2004
    Posts: 6,148

    A Boner

    "blown" as in blown up!

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