Double check the plug wires...make sure you didn't flip flop a couple of them (its easy to do). Recheck the intake and carb bolts too and make sure they are tight. Also make sure all your vacuum ports are either plugged or connected to something. Have you rechecked your initial timing? Just looking at the rotor may get you in the ballpark, but you really need to set it with a timing light.
"This is not a cheerocracy...I make the cheercisions around here"