New to V8's. 340 or 383?

Well, there's a terrific set of books that can help you greatly in rebuilding the engine by yourself. The "How to rebuild your small block MoPar" and "How to hot rod your small
Block MoPar" books show a lot. I rebuilt my first engine from the rebuild book. It worked out great. I also had the MoPar "Engines book" which you can still get.

Do you have a planned gear ratio in mind? Tire size? Ideal cruise RPM range?

Thanks I'll have to check those out and get to reading!

I was thinking 3.23 gears to give me a little push off the line without over revving on the highway. I'm going to stick with stock 14" wheels but I'm converting from SBP to BBP so it'll depend on what width I end up with. Either way the tires are going to be fairly stock. I have no idea about the ideal cruise RPM range. That's something I'll need help with since I have no experience.