I've been reading this list of 427 engine info. Very interesting. I'm a Marine Surveyor here in Cape May County New Jersey.. I have a pretty good prop computer. It's 1/2 meg self loading program. It automatically adds 1" of pitch for cupped props. If you are running a 23" pitch wheel you just put in 22" if the prop is not cupped. It's really easy to fool with and figure your prop slip if you know your gear ratio and GPS speed..
If anyone is interested in the prop computer I'd be more than happy to send it to anyone who emails me... It might help you guys out...