318 intake swap, now no spark

You can just run a wire from the battery over to the coil to test your wiring if that's the case(if have points) - just don't try running it like that for a long time, will burn out your coil(I've done that too). I had a wire break on the firewall connectors a couple of times which kept the car from starting. It broke when I moved the throttle cable. Didn't see if you had electronic ignition or not. I picked up a dual point a year or so ago - great for troubleshooting dist. issues like this. Just pop in the points dist, run the wire to the coil,
hit the started sol. with a screwdriver --- I like the old school way of doing things, keeps it simple...