Racing Downloads and Software

Cylinder Head Port Efficiency ProgramPort Efficiency Calculator

(1) Program (.exe)
Calculates how efficient a cylinder head port is -- intake or exhaust. This is one of my favorite programs. When I here giant flow numbers I'm not impressed until I calculate how efficient the port is. If they got those numbers via a huge port, did they actually make an improvement? I'd argue not. This program prompts you to get the most out of any given port size and gives you an honest way to compare two ports. I wouldn't port or buy any cylinder heads without knowing this number.
  • Input: Port Height
  • Input: Port Width
  • Input: Corner Radius of Port
  • Output: Port Efficiency (cfm/in2)

Runs on all versions of Microsoft Windows

Part of the "Engine Pack" collection of programs.