Cams for 318's

Air pump is emissions stuff. Sometimes aspirator tubes to the exhaust manifold. Casting number should help you find valve sizes and head cc. Probably small port 318 head. It's not good to have a 340 window on the intake and a small 318 port on the head. It's ok the other way around. Small intake port window to big(340) heads. Compression numbers can help with cam selection. 3800# is a lot for a 318. You'll need gears to move something that heavy. Torque cam (less duration)will help. And lift is free hp. A solid cam starts pulling at lower rpms and pulls to higher rpms but will require adjustable rockers which aren't cheap. Don't get Chinese rockers!!!