NTIDWELL, I've got a stroker 454. It's got penty on hp but it's torque to turn tires fast in higher gears. I am running 350 turbo, 203-205. in high range, 4 wheel drive first gear I can hit my chip anywhere. Ever on pavement. When your going up a hill in high range at 7 grand, even in first gear, that's plenty of wheel speed. You can ask some of the guys I ride with, second range, second gear, is about all the wheel speed you can handle in the trails. First gear high range is about the tire speed you can handle on a hill, even with 6.72 gears. Let me say, that's all the wheel speed I can handle! P.S. My chip is 7100, and I hit it a lot!