nac46

Mine is a 48 Packard. Three questions: 1) Is it possible to cold adjust the 288 valves to .070 intake and .010 exhaust to get a start point for the engine to run? 2) How do I now if they are solid or hydraulic lifters and 3) my car has no voltage regulator. Is that correct and how will switching from the 6 volt to 12 volt impact the electrics in the car (radio, lights, generator, starter etc). Many thanks!