Are you sure you didn't jump cam timing?
Check the timing manually and verify that when the #1 piston is at TDC, that both the valves are closed. And when the piston is falling in the sleeve, the exhaust valve is opening. This can be used for all cylinders, but since #1 is the timed mark, it'll help better. The intake valve should be shutting when the piston rises in the sleeve. Both valves are only closed for a very short duration.
I'm assuming you have a Hemi, which is pretty basic for timing lucky enough for you.