slant six cranks but won't start

Where does TDC show on your damper pulley? Is the #1 piston visibly at its highest point through the spark plug hole when the mark is at TDC? That's when the rotor should be pointing at #1. They can spin on the center section as they are only held by 50year old elastomeric rubber. Fuel. compression and spark is all you need. Sounds like you got fuel and compression, working on the spark. 'course they all have to be times right too.