Porting Throttle Bodies

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Welcome to Dan Vance Racing !

This is our new website & still under construction.

Please feel free to ask Dan what he can do for you.


Twin Cam/ Evolution/Shovelhead S&S Cycle & more......

Cylinder Head Porting

Harley & S&S Motors

Big Motors, Big Power

124", 121", 113 ", 107", 103", 98", 95"

Ported Throttle Body

Harley Davidson/ S&S Cycle/ HPI 44mm to 54mm & more.....

Machine Shop Services

CNC machining/Cylinder & Cases boring & much more!

Dan Vance Racing has been providing performance options for Harley Davidson motorcycles for over 30 years.  His extensive experience in drag racing, street mods, dyno tuning, cylinder head porting & building big inch motors has provided him with the know-how to customize your Harley Davidson engine mods in all RPM ranges according to the way you like to ride.