6000 
ive had mine over 7500, very short time though
Really? Wow. I've had mine pretty high, but I don't have a tach at the moment, so I can't verify. I'd imagine with a 3.62" stroke you wouldn't want to run 7500 RPMs too long.
Hey, 79Coyotefrg, do you have a thread somewhere about your motor or your build up of it or something. Sounds like you have one helluva powerplant there. I'm interested in doing something like you did to yours, to my motor. I can see alot of potential in the 22RE, so what have you got in yours?
