Who has the highest revving small block?

The last engine I built was a 340 and I matched the cam ,heads and intake to make top HP at 6500 as it is a street engine and it made 495hp and 462 ft. lbs of torque

I have revved it to 7000 a few times which it did easily , but it's just a street engine.

Back in the late 70's I drove a 70 coronet R/T with a 440 six pack and just headers and it hit 6000+ everytime I drove it.