greg fleming

guys I need some suggestions on a cam swap to make more power in my 454 .70 over. ok its a 4 bolt block eagle steel crank and I beam rods and .70 over srp piston and rings, I have a crower hydraulic flat tappet(02142 model #) 218/226 duration 522/527 lift 1600 to 4800 rpm range. 9.5 to 1 compression weiand stealth intake, square port patriot aluminum heads and quickfuel 780 vacuum secondary. ok the problem is it makes ok torque but it seems to have no real horse power or top end power. I had it dyno'd a while back with a aed 850 double pumper it made 554 hp at 5400 rpm and 636 ft/lb at 3600. looking to do a cam swap to gain more horsepower and more rpm. about 75% street driven with about maybe 10 trips to the track a year. I have a th400 tranny and moser 31 spline 9 inch with a 3.50 gear. any suggestions would help me out