Rebuilt 318 Refuses to Start

nm9s, to test spark I did the typical pull the plug out and touch it to a piece of metal and check for spark. I'll try what you said tonight when my dad gets back from work. The fuel is 93 octane and is roughly 4-5 months old. However, I did put a fresh 2 gallons in the tank (not sure how much is actually in the tank, no gas gauge) and we've tried more starting fluid than I care to admit just to try to hear the engine cough. The MSD ignition stuff all worked before and is all brand new. I just build the entire car not too long ago and it spun a bearing at 570 miles because of a stupid mistake I made while installing the engine. The only thing different from then is the new bearings. I don't have compression readings because I don't have the tool, but I know it's got good compression on #1 at least because when I spun the motor to find TDC on the compression stroke, it lets out a strong shot of air, loud enough to where you can hear the air in the cabin.