Class C with Chev engine--Good or ?

Chevy ford, both are good motors, ford has a 460 and Chevy has a 454. The only short coming is, the exhaust manifolds can be overheated easily and crack. This can happen to either engine. Diesels are more costly to operate, but they do get better fuel mileage. I would stick to gas, as you plan on using it occasionally, and not drive 50,000 miles a year( if you were, then that's when you talk diesel). Hope this helps