Slant won't start!!?!!?!?

Thanks guys! I really appreciate your help. It's hard to work on it right now because it's on the street (I'm currently fixing my salvage pickup in my garage).

Coolant- It all came out when the radiator neck blew and evaporated thereafter. I didn't see any smoke from the exhaust at any time, neither before or during pulling over and shutting down. I did fill it up after with water and cranked it quite a bit, still no water in oil.

Plugs- I pulled them and they're white but no moisture or oil on inside (electrode) or outside. Gap is also correct.

Distributor- I pulled it to check the air gap and gear, both ok.

Timing-I pulled the plugs so I can turn it by hand and use a piston stop to find tdc and compare against original mark.

Compression-I have an old style gauge (push-in) What exactly am I looking for?