Speed Demon: 439 MPH Small Block Land Speed Record

Monday, September 17, 2012, Wendover, Utah

Speed Demon

Poteet & Main Speed Demon crew, from left to right: Nate Jones, Dave Main, Ian Mann, Aron Crawford, Kristoph Raschke, Chris Raschke, Joe Galatti, Dave Diviak, Steve Watt, Kenny Duttweiler, George Poteet, Paul Green, Ron Main, Danny Burrow, Steve Burke, Troy Trepanier, Greg Piles. Courtesy Zane McNary: LandSpeedPhotos.com

The Poteet and Main streamliner with George Poteet at the wheel and the world's most powerful small block Chevy driving the wheels set new FIA International speed records in Category A, Group 1, Class 10. Poteet established new records for the kilo and the mile. For the flying kilo the car recorded a 707.408 KPH with a corresponding MPH of 439.562. For the mile record it ran 439.024 MPH with a corresponding 706.540 KPH. Poteet eclipsed previous records held by the Summers Brothers Goldenrod and Charles Nearburg's Spirit of Rett, making Speed Demon the fastest wheel-driven piston powered car in history. The records were set at Mike Cook's Bonneville Shootout, a yearly event specifically arranged for fast cars to attempt FIA certified land speed records, www.landspeedevents.com.

Speed Demon 2000 HP Small Block

click to enlarge

At last year's event the car established the fastest ever one-way run of 457 MPH  with an exit speed of 462 MPH, but mechanical difficulties prevented them from backing it up for the record. Their efforts prevailed at this years event thanks to the efforts of the owners, driver and crew and the extraordinary 2200+ HP, 368 cubic inch "Hellfire" small block Chevy built by engine master Ken Duttweiler. The Speed Demon has now claimed the Hot Rod Magazine Top Speed Trophy four years in a row. Congratulations guys!

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Note: Stay Tuned for upcoming interview with engine builder Ken Duttweiler. Inside a 439 MPH Chevy Small Block!

George Poteet

George Poteet

Ron Main

Ron Main

SCTA Records:
D/BFS    404.562 MPH   (D/ Blown Fuel Streamliner, 299-cid engine)
C/BFS    390.709 MPH   (C/ Blown Fuel Streamliner, 347-cid engine)

Best Performance:
457 MPH flying mile one way
462 MPH trap speed
(fastest piston engine pass ever)

George Poteet

Car Owners:
George Poteet and Ron Main

C/Class Engine,  5.98  HP per cubic inch
Ken Duttweiler built small block Chevy V8
368 cubic inches
Dart Little M standard deck block (9-inch)
Bore: 4.125-inch
Stroke: 3.400-inch
Dart 11 degree Little Chief aluminum heads
Engine management by MoTeC
2200 HP @ 8800 RPM
1313 lb-ft torque @8800 RPM

C/Class Engine,  5.978  HP per cubic inch
Ken Duttweiler built small block Chevy V8
347 cubic inches
Dart Little M 9-inch deck block (8.5-inch)
Bore: 4.125-inch
Stroke: 3.25-inch
Dart 11 degree Little Chief aluminum heads
Engine management by MoTeC
2076.6 HP @ 8800 RPM
1239.3 lb-ft torque @8800 RPM

D/Class Engine, 6.6  HP per cubic inch
Ken Duttweiler built small block Chevy V8
299 cubic inches
Dart Little M short deck block (8.5-inch)
Bore: 4.125-inch
Stroke: 2.80-inch
Dart 11 degree Little Chief aluminum heads
Engine management by MoTeC
1980 HP @9300 RPM

Twin 83mm Precision Turbo turbochargers
38-40 psi boost above 8500 RPM, Traction and driveline boost limited
below 8500 RPM
Custom Hogan sheet metal manifold with Wilson Manifolds
105mm throttle body and 16 225/hr Seimens fuel injectors (two per cylinder)
VP M1 methanol fuel

Custom tubular frame with Aerosmith Engineering designed, Nemesis Air Racing built composite body

Center Section:
Weisman quick change rearend with 1.8:1 final drive

LIberty performance Products, Extreme clutchless 5-speed



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