Example: MPH=94 WEIGHT=3550 gives us: 227hp
Example: WEIGHT=3550 HP=227 gives us: 14.55sec 1/4 mile
Example: CID=305 RPM=4500 VE=.75 gives us: 297cfm
VE = volumetric efficiency VE is appoximately equal to 0.8 for hi-perf street engine and approx. equal to 0.9+ for full race engines. This gives rather low values for CFM but is probably all you really need.
Example: HP=227 RPM=4500 gives us: 264lb/ft
Example: WEIGHT=3550 MPH=94 gives us: 230hp
Example: WEIGHT=3550 ET=14.55 gives us: 228hp
Example: (255/60R15) gives us: 27.04" (larger than factory size)
Example: (245/60R15) gives us: 26.57" (larger than factory size)
Example: (235/60R15) gives us: 26.10" (same as factory size)
Example: (225/60R15) gives us: 25.62" (smaller than factory size)
Example: (215/65R15) gives us: 26.00" (factory size)
Example: (275/50R15) gives us: 25.82" (very close to factory size)
Example: 60' time = (.12 * 14.90) + .17 = 1.958 seconds
Redline = 5400 Top Gear (trans) = 0.67:1 Rear end gear = 3.73:1 Tire height = 27" PI = 3.14 5400/0.67 = 8059.70 driveshaft RPM 8059.70/3.73 = 2160.77 wheel RPM 2160.77*27*3.14 = 183190.08 inches/minute 183190.08*60 = 10991404.80 inches/hour 10991404.80/12 = 915950.40 feet/hour 915950.40/5280 = 173.47 MPH * This number assumes no resistance of any kind. This top speed is theoretical. You will certainly never actually see this top speed in your car, but it is useful to determine a ballpark limit. Using this number you can factor in rolling friction and wind drag to get a closer number.