My brother has a 1974 Nova 406, turbo 350 transmission. He's been having issues when trying to start the engine, it just clicks like the solenoid is kicking in but the starter won't spin. After a couple of clicks it starts up. He has changed the starter 3 times, all new finally went to the small mini starter, no luck. Changed the ignition switch and it worked good for a couple of days then back to the clicking issue. He has also has a new battery, changed the ends. Cleaned and moved the ground wire from the block to the alternator bracket like stock.
Anyone have any suggestions?