Hi,
I have a 1948 Chevy 1/2 ton with a 55 235 and 12V generator. All the Chevy's were negative ground, you need the ballast resistor to keep from burning up the points. Ensure it has a 12V coil. If it turns by hand then it should be alright, I just fired up a 60's 250 after sitting for over 2 years after changing the oil and pouring some gas down the carb. SHe fired right up. I have seen guys fire up 235's after sitting for unknown years by pull-starting without knowing what You know.... Not recommended... Keep a close eye on oil pressure when you do start it, and you might want to pour some oil accross the valve train prior to starting it. I als like to put a little marvel mystery oil in the cylinders when the plugs are put to help seal and clean out the rings. Plan on replacing the fuel pump soon as they tend to dry out when sitting for a long time. I have an old Allis Chalmers tractor that had not run in over 25 years and after tinkering for a week, and a new condenser and a clean out of the carb and fuel lines, she fired up, albeit with quite a bit of smoke, but the rings started to seat after about an hour of running. The oil pressure is a little low, but most likely due to it is realitively wore out.
Hope this helps out,
Garry
