no idea where the timing is.

You should be able to static time it close enough to run until you can get a light on it.

So why CAN'T you put a light on it?

Bring the engine around and put the marks WHERE YOU WANT the initial timing, IE 10 BTC, etc If in doubt, go more advanced as opposed to retard. That is, 12 for 10, etc.

Remove the dist cap and RETARD the timing (CW for a SB, CCW for a B/ RB) If you have points, advance the dist until the points just open, or if you have electronic, advance until the reluctor tip is just at the corner/ center of the pickup coil.

If you already have water showing, you need to find that out. Gaskets don't "seal up." They either leak or they don't.