Engine shakes BADLY!!
Any ideas on why this engine runs so rough or is this just because of the cam.
First find out if the darn thing is actually running on all 16
You hear guys talk about "pulling plug wires."
Don't do that for a couple of reasons.
1....if you have electronic ignition, it can damage the ECU and even the coil
2....Pulling plug wires creates a sort of miniature lightning strike, looking for someplace to go. It can crossfire to other cylinders and give you FALSE conclusions
So instead..........short out each cylinder. Either pull the dist boots up and poke a small grounded probe down beside the wire, or else pull each wire with insulated pliers and simultaneously insert a grounded probe in it's place.
You should easily be able to tell if you have a dead cylinder(s)
Other factors are carb and idle adjustment, initial timing and intake manifold design.