BBC Mark 4 Engine Build
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BBC Mark 4 Engine Build

  1. #1
    Senior Member h2oracer's Avatar
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    Thumbs up BBC Mark 4 Engine Build

    My Warlock is a nice cruiser with the 330hp carb 454 but the best top speed i can get is about 55 @ 4200 rpm in smooth water. Definatly needs more power.

    I went to see Joey Grose and dropped off a mark 4 block with 4 bolt mains I had picked up a week earlier. After some disscussion here is what we are doing.

    All parts will be new except for pan and block.
    Forged 4340 stroker crank and rods (496)
    JE pistons
    Hydraulic roller cam and lifters
    Dart Iron Eagle rectagular port heads with roller rockers
    Profesional prducts intake and holley carb

    Joey suggested that it will make over 600 hp. The projected finish time will be mid Dec and I will post updates as I get them as well as the dyno results.

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  3. #2
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    Maybe try some products from a company like B&M
    http://www.theblowershop.com/category/20
    Last edited by havasubyou; 11-17-2010 at 10:17 AM.

  4. #3
    LP-25.com Infomaniac's Avatar
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    Cool.
    If For Some Reason I Do Something Worthy Of Recognition. God Provided The Ability And Deserves The Credit.


    QE 439 Twin Turbo

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  6. #4
    Village Idiot fc-Pilot's Avatar
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    Sounds like it will be a good little build up. Those guys sure know what they are doing, so I bet you will be VERY happy with the results that will last a long time.

    Paul

  7. #5
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    Joey is padding the numbers...he'll get more out of it then that...
    Chris Straub
    Straub Technologies

    3HP is an A$$ Whooping!!! JW

  8. #6
    steelcomp was here
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    Why did you throw away .030 worth of bore for 7 cubic inches?
    If God is your co-pilot, change seats!
    Acts 2:38, the perfect answer to the perfect question.

  9. #7
    Senior Member h2oracer's Avatar
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    Quote Originally Posted by steelcomp View Post
    Why did you throw away .030 worth of bore for 7 cubic inches?
    I don't see it as a waste. If I could have gone bigger I would have. I wanted to buy a Dart block and build a 540 but I got this one for $200 and saved some money. The boat is used mostly for cruising and I won't be hard on it. I don't expect to have to rebuild it for a long time. I do have an extra block if I need one.

  10. #8
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    I have a complete mark 4 hyd roller valve train in the parts spam. Excellent condition. Check and see if it will work for you. It would save you a ton of money. Scott

  11. #9
    steelcomp was here
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    Sounds very similar to a 489 I'm doing, only with 990 heads and a dual plane.
    Good luck with the Pro Products intake.
    If God is your co-pilot, change seats!
    Acts 2:38, the perfect answer to the perfect question.

  12. #10
    Senior Member BrotherWolf's Avatar
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    KEWL I just got my 496 stroker back last week motor was built buy
    Dg Machine in Auburn Wa. I will be changing the intake soon but the torker 2 is enough to get some time on motor


    Last edited by BrotherWolf; 11-19-2010 at 07:24 PM.
    With Spray there is a way!!!

  13. #11
    Senior Member h2oracer's Avatar
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    Finaly have an update. The block has been machined and all the parts are in from the suppliers.The short block will be assembled tomorrow. I will take pictures of all the parts and post .

  14. #12
    Senior Member tkriley13's Avatar
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    Awesome

  15. #13
    Senior Member wagspe208's Avatar
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    Quote Originally Posted by steelcomp View Post
    Why did you throw away .030 worth of bore for 7 cubic inches?
    I am with Steelcomp on this one. This has always amazed me. A guy will buy a new block and bore it to max. Well, that is money well spent.
    I am not saying you are wrong. IMO a couple freshens and at least 1 rebuild is worth the trade off in the 7 ci to me. (notice I said me) If you were making 2hp per cubic inch this is 14 hp. (you aren't, so it is less than 14 hp)
    Yes, I practice what I preach. My dart is not maxed out. It should last me until I quit racing. (hopefully within a year or 2 )

    Wags

    BTW.. I'm not bustin' your balls. It will run its ass off. Be happy. Good luck.

  16. #14
    Senior Member lbhsbz's Avatar
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    taking it .060 over is a good decision I think. Remember, your dealing with a 30 year old block and probably new pistons.

    It's tough to find a virgin mk4 block any more.....and if you ever wipe out a cylinder, a .030 over core is easy to find. Pistons are all the same price regardless of the size.

    I did a .030 over setup for my boat a couple years ago....and after discovering a problem with the mains, had to buy another block and take it .060 'over since I couldn't find a good core that would clean up at .030, then had to buy new pistons too. Had I started out at .060......things would have been more plentiful.
    GN7: "If you were to have ever had two brain cells you could rub together and make heat, you be dangerous"

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