Welcome to Dan Vance Racing !


I have been working on Harley Davidson motorcycles since 1976 as a full time job, every day, all day. We specialize in performance mods to your Twin Cam, Evolution,Shovelhead & S&S Cycle motors.

What is performance ?? In my opinion performance is anything that you can do to your Harley to make it run better, smoother and/or faster than stock. I do have a strong desire to make Harleys run better than what we get from the factory.

We are a Harley machine shop that works on Harley Davidson & S&S Cycle motors, with a specialty of cylinder head & throttle body porting & flowing as well as motor work including increasing cubic inches & building reliable big inch motors. I personally like my bikes to accelerate when needed. I do not like how the Harley Davidson factory bikes accelerate. You go to wide open throttle to pass a truck and the bike goes Waaaaa.   Makes big noise but the bike doesn't accelerate forward, just makes more noise.

In the following pages I will give examples of the work I do and the expectations that I have from this work.  I like to make every performance kit for that particular customer, as we all have different requirements from our rides.


Please feel free to ask as many questions as you like to insure you are getting what you want.


I am a certified S&S technician and have been building & racing S&S & Harley strokers since the 1980s. So you can be assured that your motor will dependable & fun both for the street or the track !!