My 64 Chevelle 283/t350 has been sitting all winter and started from time to time. I went to start it the other day and it cranked a few turns and then nothing. The battery is fully charged, I have a new positive battery cable to the starter already installed. The old one looked bad so I replaced it. The car has headers that were installed about 6 months ago, and the car hasn't been run very much. Could the starter have gone bad that quick due to header heat? Is there a good way to test the starter, and to verify that I have good voltage to it? Any ideas? Thanks.