Here's a vid of a guy pushing his nova to 12,000 rpm. 289 cubes, probably bore stroke combo of chevy.
Grumpy went thru the lights with his 331 at around 9300
Same as mentioned here....8 to 9K for R5P7's but for 500 miles!! Like Will Smith said in Independance Day the movie, "I gotta get me one of these"!
https://www.youtube.com/watch?v=xv251lDtGu0