You said previously that you have a spark from the large coil wire to the distributor. I am assuming that you held the wire close to the block and cranked the engine, and saw a good blue secondary ignition spark. If the spark is not going out to the plugs, then the rotor is faulty. Here's how to check it. Remove the distributor cap. Remove the coil wire from the cap. Use a dry rag or insulated pliers and hold the wire above the rotor, about 1/4 inch away. Have someone crank the engine. If the wire sparks to the top of the rotor, then that indicates that the rotor is going to ground, which it shouldn't. Replace it. If it doesn't spark, the rotor is either good, or you have no spark to the block as well.