I have a Continental C-85. trouble is the camshaft is broken and can not be used. I can change the camshaft from 0-200 or C90 and hydraulic valve lifter instead?
Maybe. The other two cams require some machining of the crankcase as the valve lifter bodies that contact the camshaft are a different size. There's a Continental Service Bulletin M47-16 Supplement 1 1960 that allows some component exchanges to convert a C-85 to a C-90. But that's not what you're after...you likely just need another serviceable C-85 camshaft.