KB 810 HP/ 745 ft/lbs Shelby GT500 kit

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  1. #1

    Default KB 810 HP/ 745 ft/lbs Shelby GT500 kit

    810 HP/745 FT/LB KENNE BELL BIG BORE 2.8H SHELBY GT 500 KIT


    On November 9th Kenne Bell made history. Our new 2.8H("H" for 2.0 high pressure ratio) Big Bore Twin Screw kit recorded an incredible 810 hp and 745 ft/lbs(SAE corrected). Our Earl's Automotive test car was 100% stock except for cooler plugs, a Kenne Bell boost-a-pump and optional throttle body and inlet system. That's with a stock fuel system (lines, rails, pumps and injectors) through stock cats and exhaust. No headers, cams, nitrous etc., only the 2.8H kit. All with an ultra efficient, compact and lightweight 2L series Twin Screw. The supercharger itself is so efficient that bolting on the big discplacement 2.8H with the same size stock 3" pulley increased power by 125hp(606 vs 481) over the Eaton 122 (2.0L). Same pulley size - same tune. Only a kit change with 100% stock car. The kits HP range is 568 - 810. Preliminary tests indicate it can make 725 hp on pump gas at 16 psi. The new supercharger is so efficient that 1 psi of boost is 25 hp. Remember the "H" series requires less engine HP to drive, By upgrading pulleys(12-20 psi) and optional inlet components(throttle body and cool air kit) there's plenty of room to grow.
    Preliminary testing indicates the Shelby makes 725HP on pump gas at only 16 psi and 810 hp at 19 psi. The unusually high HP output is possible because of the 2.8 H's radical 2.0 internal pressure ratio. Other 2.2, 2.3 and 2.4 Twin Screws use a 1.4 built in internal pressure ratio. The new design Kenne Bell 2.8H consumes up to 40 less engine HP to drive, that means 40 more rear wheel HP at the SAME boost. Discharge air temps is also 30 degrees cooler at high boost levels. These two 2.8H features(less parasitic HP loss and lower air temps) are responsible for it's unusually high HP levels.
    Equally important to the overall high effeciency of the kit is the cavernous high flow 1000 hp + inlet and a huge new Kenne Bell dual 75mm throttle body.Both were developed on our new 1000 hp flow bench.
    Our goal was to engineer a flexible kit with a compact lightweight, highly efficient - low parasitic loss billet twin screw that would make all the HP 99% of our customers would ever need. 810 hp and 670 ft/lbs at only 2500 rpm is more than enough to exceed the design limits of the stock engine and drive train.
    Literature and Tech Tips will be posted on our website on Dec. 15th. or sooner. Next we'll gut the cats and test headers, exhaust and cams on the dyno and drag strip. Earl will be doing all the driving. The "Shelby Tech Tips" will include everything we've learned about the car's fuel system, ignition, clutch, inlet system, calibration etc. along with 50 dyno tests from the stock 444hp / 428 ft/lbs to 810 hp / 745 ft/lbs.
    We have 2 months of development time and over 500 dyno runs on the Shelby. It is the most exciting, efficient and insanely powerful production engine we've ever done a kit for. By comparison, our GT Supercar made 710hp with a 2.3 Lysholm and Kenne Bell HCD Drive Conversion with 2 1/2 pulley. The KB 2.8 H Shelby made 810 with the same 2 1/2 pulley, throttle body, tune etc.The heads, cams and CR are also the same for both engines, the Supercar even having a perceived power edge with it's exhaust and dry sump. Yet the KB 2.8H equipped Shelby developed another 100 hp (810 vs. 710). The 2.8H is definitely capable of pumping 800 + HP into these engine. Kits should be available Jan. 15, 2007 or hopefully sooner. Again, our kits are designed so yu can customize the desired HP by selecting the pulley, cool air kit and dual 75mm throttle body. Tuner kits are also available and no problems with the pulley to hood clearance at the lower boost/HP levels. 25 HP increments from 568 - 810 with a direct bolt on on upgrade kit and all stock engine components.

    The first dyno graph is the KB 2.8H Shelby kit vs. Ford GT Lysholm 2.3 kit with same 2 1/2 pulleys, same timing, and same A/F ratio.

    The second dyno graph is the same KB 2.8 Shelby kit vs. stock Shelby Eaton 122 with same 2 1/2 pulley, same timing, same A/F ratio.
    Attached Images Attached Images   

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  3. #2
    Senior Member Array er306's Avatar
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    Default Re: KB 810 HP/ 745 ft/lbs Shelby GT500 kit

    The heads, cams and CR are also the same for both engines,
    I believe the cams are different from the Ford GT to the GT500. Ford GT has it's own cams and the GT500 has 03 cobra cams in it. If you pick up the latest Ford racing catalog, it shows that in the beginning of the 07 year they will offering a cam upgrade for the GT500's which consists of the Ford GT camshafts. Unless the cams have been changed on Earl's car? If they have not been changed then it really shows how good the 2.8H is working on his car and it should see a big gain by upgrading to the Ford GT cams.

  4. #3
    Senior Member Array ~Aj~'s Avatar
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    Default Re: KB 810 HP/ 745 ft/lbs Shelby GT500 kit

    Wow! No need for a turbo now!

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    Senior Member Array VNMSNK97's Avatar
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    Default Re: KB 810 HP/ 745 ft/lbs Shelby GT500 kit

    I wonder how fast my car would be with that motor..... C'mon James let me have it and we'll both find out! Awesome numbers!

  7. #5
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    Default Re: KB 810 HP/ 745 ft/lbs Shelby GT500 kit

    Very impressive.

  8. #6
    Dr. Boost Array svt boost's Avatar
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    Default Re: KB 810 HP/ 745 ft/lbs Shelby GT500 kit

    holy crap.

  9. #7
    Yeah... I got some.... Array chuckles's Avatar
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    Default Re: KB 810 HP/ 745 ft/lbs Shelby GT500 kit

    my god... I'm speechless... One could only imagine what a set of LT's and CAI, could do with this setup...





    I oddly now feel weak and ineffectual...

  10. #8
    Senior Member Array Snorman's Avatar
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    Icon14 Re: KB 810 HP/ 745 ft/lbs Shelby GT500 kit

    Very impressive.
    How reliable will the 5.4 be at that level?

    S.

  11. #9

    Default Re: KB 810 HP/ 745 ft/lbs Shelby GT500 kit

    Quote Originally Posted by Snorman View Post
    Very impressive.
    How reliable will the 5.4 be at that level?

    S.
    It sure would be fun finding out..............When it breaks, build it better.

  12. #10
    Member Array BlueVenom281's Avatar
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    Default Re: KB 810 HP/ 745 ft/lbs Shelby GT500 kit

    Sweet Jesus

  13. #11
    Senior Member Array Orlando Whipple's Avatar
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    Default Re: KB 810 HP/ 745 ft/lbs Shelby GT500 kit

    Good GOD, Holly Cr*p, Screw me runnin! THis is absolutely insane! Stock engine with cats and exhaust---this is the ultimate----this is all I need to hear now. Uggh have to find the $! Quiet, massive power on pump gas???? Unfrigginbeleivable. I have just been shaking my head in disbelief..

    Stock fuel system/ quiet exhaust / thisis truly the answer for me. ****--add another 300 lbs! what do I care--with that power it wont matter. Unbelievable.

    Folks does everyone realize this milestone!??? Seriously--we are talking about high nines capable street car all day long with 4:10's and tires! I am beside myself......

  14. #12
    Senior Member Array Boosted98GT's Avatar
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    Default Re: KB 810 HP/ 745 ft/lbs Shelby GT500 kit



    Wow. 810 @ only 19psi? Imagine what an uncorked exhaust would do to that beast.

  15. #13
    Mod fords slowest cobra. Array shawnssvtcobra's Avatar
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    Default Re: KB 810 HP/ 745 ft/lbs Shelby GT500 kit

    Wow im impressed for sure.




  16. #14

    Default Re: KB 810 HP/ 745 ft/lbs Shelby GT500 kit

    Hi James, how are the intake temps with this new blower. Is heat soak an issue running 2olb's and the stock cooler.

  17. #15

    Default Re: KB 810 HP/ 745 ft/lbs Shelby GT500 kit

    I've got some seriously hard thinking to do!

    Congrats to the Kenne Bell team for this amazing accomplishment!

    800rwhp twin screwed Mustang street car!

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