Yes you can. but use a small engine spark plug tester. Do not use an HEI ignition tester because the gap is too big. I prefer the KD 2757 if you can still get it. The 2756 is HEI and may blow your ignition module $$$Has key power, swapped module, distributor appears to be be pristine. Can I use a spark tester between coil & distributor to determine if coming out of coil?