Okay, I can’t get my 360La engine to start

I deal with goofy electrical problems all the time on the job. Old school basic mechanical logic is often the answer with basic tools. Start eliminating variables. Load test the battery, not just a voltage test. If you are 100% sure the battery is good move on to the next option. I would pull the starter away from the mounting location and use a set of jumper cables to offer it another ground. Crank the system and see if it functions without it having to drive the flywheel. If it functions fine, consider the possibility of a binding problem at the starter drive flywheel contact point. If it does not function, disconnect the power source going to the starter and use a jumper cable again to energize the starter. By doing this you are eliminating the cars factory high amp power source. If the problem goes away look for a partially grounded power cable or pinch or cut in the cable. If you are lost call me @ 847-323-8186 and I can talk you through the steps and help you trouble shoot it over the phone.
-Dan