This is the worksheet for the #208 cams. The exhaust and intake systems are as good as I can get. Power is optimized for 7,500 to 8,500 rpm.

The first ten runs under the circled "1" use the hybrid-sim method to select cam timing and duration. It give ten combinations. All lobe center angle combinations are modeled using the hybrid-sim method with #208 cam ten point descriptions. Intake centerlines run from 90.5 to 94 degrees. Exhaust centerlines are from 112.0 to 115.5 degrees. Overlap at 0.006 varies from 105 to 110.5 degrees. Good results come from some of these lobe timing combinations.

The three runs under the circled "2" use the filling-emptying method to select cam timing and duration. It gave ten combinations. Like with the first ten runs, the combinations are modeled using the hybrid-sim method with #208 cam descriptions. Results were lousy so I modeled the first, sixth, and tenth combinations. Intake centerlines vary from 102 to 104 degrees, exhaust centerlines are from 113.5 to 114.5 degrees, and overlap is 94.5 to 108 degrees.

The single run under the circle ed "3" is from the cam card timing. It is modeled using the hybrid-sim procedure. Power is lame.

The ten runs under the circled "4" used the wave-action method to figure out ten lobe center angle and duration combinations. All were analyzed using the hybrid-sim method and ten point descriptions for the #208 cams. Intake centerlines vary from 93.0 to 94.0 degrees. Exhaust centerlines are from 103 to 109 degrees. Overlap at 0.006 is 110 to 115.5 degrees. Some combinations give good power.

Use as little overlap as possible, Dema advises in his paper. The fifth combination under the circled "1" gives good HP with less overlap than many other combinations. Intake centerline is 90.5, exhaust centerline is 112.5, and overlap is 110.0 degrees. Idle quality and power below 3,000 rpm are awful according to the computer simulation. That is a sacrifice made to the god of speed.