318 Magnum first fire...timing?

This recent thread of mine has some good information-
Distributor Install for first start. Double check my work!

The way you have it installed looks correct. I set my harmonic balancer to 10 BTDC on the #1 compression stroke, then installed intergear and distributor just like you have yours shown and it worked for me, instant start for break in. It sounds like youre probably at TDC of compression stroke on cylinder #6 (180 out). I would pull the intergear/distributor, prime it again (make sure you rotate the crank so that both heads get oiled), and reinstall the intergear/distributor as you have them, but make sure youre at TDC of compression stroke on #1 and your plug wires are oriented correctly. Easiest way for me to find TDC is to hold my thumb over the spark plug hole while turn the crank with a racthet. You will be able to hear/feel the pressure build in that cylinder. My intergear was clocked towards the drivers side front intake bolt like yours.