340 camshaft

The gear ratio and tire size should be at least in the ball park for what you intend to use and that helps cam selection.

That xe284 should fit the rpm bill you listed. I myself would rather a bit more stout of a cam lobe. Like the Lunati Voo-Doo Line. There all on a 110 C line. That’s a typical muscle car exhaust rhythm. You could ask for it on a 108 and it will have a nastier rhythm. More racey.

Gear wise, 3.73 - 3.90’s on a 26 - 27 inch tire would be good.