I have my 302 hanging in a tree in the yard and we are trying to start it. this motor has an accel 52201E distributor. the motor will crank and we have spark. When we crank the engine fire will come out of the manifold but nothing will happen. This engine has been setting for awhile. We took the valve covers off and the valves apear to be moving. Do we need an ignition box?? I have a duraspark in my car, but it is for a six cylinder. Thanks for any help William 1971 250 Ford Maverick