I sure wish I had Dave's answer when I was 16!! How far are you willing to go with your engines modifications? Intake, Exhaust, carby, ect all work together as a team as Dave pointed out. I made the mistake of putting in a Purple Stripe Cam that was way huge. The car ran awful, way slower than stock up to 90 MPH then it would run out of steam altogether! (73 Ply. RR with Low. Comp. 340 and 4000lbs.) I had to change everything from front to back, timing chain, intake, carb, exhaust, transmission, torque convertor, 4.10 rear Sure-Grip diff and ring gear,(new pig 8 3/4), bigger wheels and rubber(N-50-15's),,snowballed into a money pit. It was much faster after all that but barely drievable on the street for long periods. It would foul plugs all the time. Dave's right The stock OEM 440Magnum and possibly the 440SixPack cams might be right for you and are still available from various suppliers. If I were to get a new street cam today for my 440 SixPack it would be a hyd. roller.lynden hunt wrote:i have a stock 440 i want to give it a bit more go . i was looking for someone thats played with cams or is a guru on their selection. can you help