Well what do you mean by what rpm range do i run it at? its just a weekend car so i drive it as normal as possible in town but u know how it is i gotta put my foot in it no and then. It has a th400 with a 3000 stall and 3.73 gears so cruz n in town its at 2000 rpm go n bout 40ish and of course up higher when im on it. I do plan on take n to track every now and then