PP,
F-16 Fighter Weapons School standard answer: It depends...
Good link from Gil above. My "RVX" numbers are included in his thread in my post.
When you ask about RPM/Speed numbers in an RV, altitude is a big factor in what you actually see.
I pitch my props to allow 2800 at Sea Level so I can attain "Rated Power" (2700) at 8500 and above. Your mileage may vary...
What numbers RU seeing at Sea Level, 5K and 8.5K and what prop do you have?
V/R
Smokey
*RVX is a one of a kind RV: RV6 fuselage mated to RV4 wings and tail.