We routinely turned small block V8's into the high 7K range on the dirt tracks. Yours will get you into speeding ticket territory for thousands of miles, regardless of the gear ratio you choose, unless you're running some kind of rock crawler offroad machine.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!