Competition Cams Features: Advanced Predictive Software Simulates Engine Dyno-Testing Of Any 1-12 Cylinder/4 cycle Engine Allows Testing Of Cams/Heads/Valves/Fuel etc. Displays Power And Torque Curves Will Run On Microsoft 95/98/Me/2000/XP/Vista Height: 0.25 Width: 5.25 Length: 7.50 Weight: 0.21 lbs