Reply to "NEED HELP 351C won't run after new cam"

...Priming the Fuel Bowls, That's why I run Electric fuel Pumps!

Here's what comes to mind.
Check for:
1. Distributor Installed 360 Degrees Off, in Reference to the Crank!
Stick finger in #1 Cylinder Spark Plug Hole and VERIFY You are on the Compression Stroke.
2. Blown Power Valve in carb caused from backfire.
3. Did You align the timing marks to crank gear properly when you installed the Cam, timing SET?
4. Carefully recheck the Firing Order of the Spark Plug wires. The Cleveland is: 13726548 2 Wires can be switched and the Engine will still start and run, only Crappy as you described.
5. Check the Float Levels.
6. Is the Engine GROUND WIRE Properly Hooked Up?
7. Is the Ignition, Itself, Grounded Properly? And the Coil? Check for Continuity with a Multimeter.

...This will keep you busy!