desktop dyno help

I use it all the time. You can read straight off a cam spec card and input it. I personally use @.050" timing. Another thing is to get the correct head flow numbers. They make a big difference. One note is when you get into good flowing heads (like Indy's or Big Port Commando's) and big cams, it tends to get inaccurate. I replicated a 660 hp 426 LA that Horsepower TV built and it only made 590hp at 6000 and 580 lb/ft tq at 4500.