Originally Posted by Hit Man X

Should be around 2677rpm or so at 70mph with a 2.88:1 axle (25.3" tire on mine). That's where I cruise on the freeways always around here. Gotta remember we don't have lock up torque converters so that can and does vary from what the stock instrumentation reads. Perhaps there's a few percent of error within them like others?

With the 2.47:1 shows appx 2296rpm at 70mph with the same variables as previous. There looks to be about 62rwhp at 2300rpm and around 75rwhp at 2700rpm.

I still have a dyno chart I found on here from a 300D where the torque is pretty flat from 2000-2600 then tapers probably 20rwtq from 2600-3000rpm.