Up where i go hunt a couple of hours away from my house, there is an old k6600 chevy school bus, the license plate sais it was registerd in 73 so i know it either a 73 or older, any idea what that could be? 427? 366? the starter is on the drivers side and instaed of an alternator there is a generator.. What could it be? It is a big block but the carb on it is tiny, i dunno if this helps. Thanks.