I was able to do a LOT more to influence real-world performance on the track (and the dyno) by using an offset Woodruff key or an offset dowel pin bushing on the timing sprocket than I could by tinkering with the lash adjustment. The Vara-Cam timing sprocket was the best of all, as it was able to accomplish the best of both worlds- - - -good holeshot off the turns, and better HP at the end of the straightaway. The biggest problem then was wheelspin off the turns, a good way to spin out on an asphalt track. On dirt, there's a little bit of wheelspin all the way around the turn. One of our drivers claimed he was turning 200 RPM faster in the turns than he was down the straight!
Jerry
