Boosted SBC ‘Speed Demon’ Streamliner Tops 462 MPH At Bonneville

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It’s being reported that during a private meet at the Bonneville Salt Flats in Utah today presided over by the FIA, the ‘Speed Demon’ streamliner of George Poteet and Ron Main screamed to a speed of 457 MPH, with an exit speed of a whopping 462 MPH. For reasons yet unreported, Poteet and Main were unable to perform the required return run down the salt to officially set a new world record; however, that speed marks the fastest ever recorded by a wheel-driven, piston-powered vehicle.

The Speed Demon has seen a natural progression of engine combinations, horsepower, and therefore, speed, during Poteet and Main’s march to their goal of exceeding 500 MPH. Among them have been a turbocharged 2.2L GM Ecotec and a turbocharged Dodge-four banger midget engine, along with Chevrolet V8’s and a Ford Flathead that cruised by the 300 MPH mark.

Today, the Speed Demon is propelled by a turbocharged, 347 cubic inch small block Chevrolet built by noted turbo guru and drag racing engine builder Kenny Duttweiler, who also constructed the GM and Mopar buzzin’-half-dozens that Poteet and Main originally utilized. The 347-inch mill, burning methanol, produces an impressive 1,500-plus horsepower, creating enough grunt to push the land-locked bullet to speeds quicker than many of us can fathom.

About the author

Andrew Wolf

Andrew has been involved in motorsports from a very young age. Over the years, he has photographed several major auto racing events, sports, news journalism, portraiture, and everything in between. After working with the Power Automedia staff for some time on a freelance basis, Andrew joined the team in 2010.
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