The Art of Speed

Welcome to the Home of the Horsepower Specialists - Knowlton's Thunderheads & Racing Engines.
We offer head porting, engines, builds and machining, transmissions, tuning, carb rebuilds and more.






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Engine Packages

KTRE engine packages offer you the chance to go beyond a crate motor and get proven, tested parts combinations to create the motor of your dreams.



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KTRE are the Gen III Hemi kings. Get the the most out of your Gen III Hemi or get a complete motor build from KTRE.



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Customer Rides

See some chrome as we show off the finished products our customers have put together with genuine KTRE horsepower.



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Knowltons Thunderheads and Racing Engines

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