No spark. Thoughts?
 

Changed out radiator . No start after. This doesn't make sense. Checked for spark. None. Swapped out coil wire. Changed cap and rotor. What's to look at next?

Is the king lead / coil wire secure at both ends - do you know if there is there a spark from the inside of the distributor cap to the centre of the rotor?

Assuming it is cranking - if not, could it be as simple as a loose battery lead?

Yep, doubled down on the coil wire. Cranks well, no problems there. I am just thourghly confused as to what I could have possibly pulled off in just changing the radiator. Car ran fine before. All I pulled off is the airbox and the dist. cap.

Did you connect the firing order right

Check the rotor and set screw.
Did you unplug the AFM connection?
AFM air intake swinging "door" --is it stuck? Moves freely?

and finally, when you crank the engine, does the tach bounce 1/16th on an inch?

J_AZ