360 Engine cranks but won't start

TDC does not tell you whether the no1 is ready to fire, or whether no6 is ready, IE they fire every other crank turn, alternately.

You probably have the distributor in "180 out" meaning it's 1/2 turn off. You can do this by pulling the dist. and rotating the shaft 1/2 turn, or you can just relocate the plug wires

I always pull no1, stick my finger in the plug hole, and bump the engine. You know how to "jumper" the starter relay? Use a screwdriver across the two largest exposed terminals.

You may have to "go round" a couple of times until you realize what to feel. You are looking for a huge puff against your finger.

When you START to feel that, stop and use a wrench if possible to more accurately move the crank. Bring the timing marks up towards TDC but SET the marks "where you want" timing, that is, about 12-15 degrees BTC for a stock / mild camshaft

At that point, with the cap off, either adjust the distributor "from" retard towards advance, that is, first move the distributor BODY CW, then come back (advancing) CCW so that the points just open, or if electronic, set the reluctor wheel tip in the center of the pickup coil core.

Now you should have the rotor "approaching" a corner of a plug wire tower coming CW. This is your no1 plug tower. Put the wires in CW from there in firing order.