cranks but no spark at coil

Thanks guys. Going in to work tonight so tomorrow i will test coil +ve with everything hooked up. Hopefully temps drop a bit so cooler and easier to work on. Ill try n test before work. I will clean both sides of dist leads and recheck.
I may have to bite the bullet and pull distributor.
No to analog ohm meter. Cant I put digital one on "continuity" beep. And connect each probe to distributor leads (dist side) and it should beep while with cranking?
Not sure if I have a spare distributor to swap in.
Ebay has a starter relay for $10. I may order for a spare.
Thanks again guys.
Steve I would not have unplugged the ECU for coil voltage test. Hook everything "as normal." Measure coil + to ground in "run" and in "crank."

However at this point ---you have spark by grounding the dist harness---this looks to me like a dist / pickup problem

Probably hearing the spark jumping inside the dizzy or cyl. since You are triggering a spark with the pick-up lead and the coil wire is back on. You've got enuff voltage that
it isn't the issue,& the starter relay is sending the system voltage cranking. They sell nice trailer harness cleaning kits now, can use them to clean the pick-up connections
nicely. As TB said, those molded dist. pick-up connectors let the socket terminals relax & open, close 'em up so they fit snug once their clean. A squirt of contact cleaner &
a little di-electric grease and You won't have to fool with 'em again unless the pick-up goes bad.

I meant to ask if You have an analog Ohmmeter, even tho the dizzy just ran the 'cuda, well they just quit one day so............. hooking up said meter to the 2 leads on
the pick-up should make the needle fluctuate steadily & rhythmically when cranking, if You are using a DVOM w/a bar-graph it may show the same well enough..............