not exactly - the deal is this: on a stock car, its claimed a set of CAM GEARS can ad up to 9HP (stock CAMS). If you Add CAM GEARS to a set of aftermarket CAMS - the gains are Higher.

The issue is to have the CAMS and CAM GEARS tuned in Properly on a dyno. this involves good few hours on the rollers, adjusting the intake and exhaust gears together with ignition timing and air/fuel mixtures to gain the optimum performance.

CAM GEARS DO GET HP... they just have to be done properly. Don't get Cam gears, slap them on the car and expect to turn 1 degree this way or that way tho... because that could be lethal to your engine.