318 Cam Maybe Not

The op didn't mention which heads he has on his engine now. The 302's if they aren't cracked (some do) are a nice improvement. They have a very efficient closed combustion chamber and flow pretty good for a stock build. They also have hardened seats for todays gas. It sounds like he has a lot of the good stuff already installed or ready to go. The dual exhaust looks good and the LD4B and the 1406 are a excellent choice. You can get into trouble with too much cam in a 318 without a converter and bigger rear gears. Keeping the @.050 duration below 220° is the key for a stock converter. Rusty likes the Comp 265DEH. It is a split cam and should work well with cast manifolds. There are quite a few cams at the 220° or below range. The closer to 200° you get, the smoother the idle and the fewer issues you have with lack of low end power and vacuum for power brakes if you have them. I have run dozens of those cams on the dyno program and all are in about the same torque and horsepower range. There's a good thread to read if you haven't already. RustyRatRod's Guide To Hot Rod Bliss