Replace a Chevy 350 distributor rotor?

There are a few different styles that were used over the years, but if you go to the auto parts and buy a new one for your application you will be able to see how it's held on. It's under the distributor cap. It's generally accepted policy to replace the rotor and distributor cap at the same time. Just make sure you connect the wires to the same place on the new distributor and don't "FORCE" anything. Distributor caps and rotors are made of a strong but brittle plastic and will break. Many of the rotors are just "pressed" onto the shaft with your fingers but some are screwed to the centrifugal advance mechanism. It depends on your distributor.