I was able to play with the Big 6 today for a while. I pulled the plugs. Some showed signs of moisture. The plug holes are over the valves and not the bore so I couldn't measure the stroke. I put oil in the cylinders and it turned easily until I put the plugs back. I had been using a pipe wrench on an old crank. With the plugs in I could not turn it over until I put a 2' pipe on the wrench handle. I can not tell if the valves are opening but they are evidently sealing fine. Do any of you think SCTA would have any interest in a class for X engines larger than 375 ci? If I put this in a Lakster it would be in a B gas class where the record is 280+ mph. I don't care about a record but the extra cost of building a car in class that fast would be prohibitive. This engine would be fun to play with and just see what it would do.
