Power band...This is a car that I enjoy on the street; I rarely go over 6500 RPM and usually stay under 6000. I want this motor to feel like a big block and put my head in the seat on occasion. I'm not sure what you mean by "what's the cam ground on". It was purchased new a few years back when I built this motor the first time. When I first built this motor the guy who I've known for years did the machine work and originally talked me out of going with the L2242F30 pistons. He suggested that I stay around 9-9.5:1 compression. What I ended up with is about 8.5:1 because I chose to go with open chamber heads.