Some of the others could probably tell this better:
What was the average car count in the late model class?.... I think that Lakewood was always a big event track even in it's early days. They ran champ cars and stock cars (read as Bootleggers cars) early and NASCAR Strickly Stock, and Sportsman cars through the years.
Were there any lights or was it all daylight racing?.... The only lights I remember were on the front straight. They would use the front straight in front of the grandstands for the "Joey Chitwood and the Hurricane Hell Drivers" shows at the South Eastern Fair each year.
How many laps in the LM class?.. Again this was mostly a special event track and ran 100 mile or so shows.
What is that big white building in turn 4?.... That is one of many exibition halls on the grounds, this is a state fair grounds complex and was where the South Eastern Fair was held each year.
If you will look closely you will find that this is the track used in the movie "Smokey and the Bandit". They blew up the old wooden roller coaster for one movie.
I don't know what kind of speeds they were turning when Buck won or even the older cars, but I bet is was pretty fast. Cody / Brandon are there any records that the GARHOF has that you might add?
Here are few other shots:
here.