Same as you'd get 8,000 out of a sbf. Balanced, lightweight rods & pistons, big cam, big head work. Maybe laughing gas or a turbo. Or both. Speed is just a matter of money.

Check out Mighty 6 on youtube. It's a 292 Chevy...but I think he's pumping 800hp at the rear wheels.

With the stock cam you'll have to shift before you can do any damage. Unless you're determined. I've never matted mine for long in high gear but it's not pulling much past 4,500 anyway.