I also just have a little 470" Eagle crank,Manley rods,Diamond pistons @ 10.2:1, Eddy heads. Comp street solid roller, RPM intake, Holley 800dp. Idles at 900 made 430hp @ the tire @ 5500rpm(lots more there) and 500+ ft lbs all the way up. It's in a 69 B'cuda FB with a 4 spd and 3:73 gears. Very driveable and not hard on fuel if ya keep your foot out of it(hard to do). RPMs like a chain saw and pulls like a freight train...lol.....tons o' fun!!