360 Won't Start!!

Ok guys here's an update. So after messing with the timing about a million different ways :angry7:, I decided to take the drivers side head off just to make sure nothing was going on internally. Everything looked fine to me, no evidence of the pistons hitting the valves or anything like that. Also, my plugs were damp with fuel but not fouled so I know it's getting gas. So here are some other questions. My dad mentioned checking my spark plug gaps, I know that could make the car run bad but if it was just the gaps wouldn't it still atleast fire?? Also, is there any way to put the cylinder heads on the wrong side? I know they bolt up the same but if I put them on the wrong side does that mess up my quench and everything? I'm running closed chamber 318 heads, (i know, not great heads for this application, but that's all I can work with for now). Well I'm gonna try and spend some time with it this weekend so if you have any other suggestions please let me know! Thanks