I was playing around with a copy of the Quarter, Pro dragstrip simulation program and there is an interesting feature that I use quite a bit. Once you have dialed in all the variables like power, gear ratios, tire size, shift points, and all the other data points, the Quarter, Pro simulation will deliver the usual quarter-mile e.t., speed, 60-foot, and all the other information that you expect. But there are several tool bars across the top that allow you to dig a little deeper. One of these is the Engine RPM Histogram. While that sounds way too technical, it merely tells you the amount of time the engine spends in each engine speed. As an example, the Orange Peel Chevelle runs 7.60s at around 89 mph with a stall speed of roughly 2,800 and a shift point of 6,000. When I plugged all my data into the Quarter, Pro the numbers indicated that I have much work to do to get it to run as quickly as the simulation indicates. The Engine RPM Histogram reported that my engine spends more than 80 percent of its time in the 4,800 to 5,400 rpm range. If I were to concentrate my efforts on building power in this powerband, the car will probably run quicker rather than trying to improve the top end power. I think this is an incredibly useful feature that very few racers understand. If you want to know more, check out the Quarter, Pro and Quarter, Jr. simulation programs at quarterjr.com.