In July i went up the Green River Gorge on I-26 in North Carolina it's a 7% Grade. Coming from South Carolina. I was doing 3000 RPM at 40 MPH in the right side truck lane. My truck is a 2002 Dodge Ram...
Back to the topic. 3000 RPM at 40 MPH would sound about right for 2nd gear, but. I don't think the OP's torque converter locks in second, so his engine RPM would vary some with how much throttle he is using and not be directly related to vehicle speed.