This track was part of the Thunderbird Raceway complex near Muskegon which later included the drag strip next to it. According to a 1977 article (see below), the race track opened 16 years before which would put the opening in 1961 or so. I am not sure if the drag strip opened then or later. My sense would be later. The track is still open but the drag strip shut down after a fatal accident occurred in 2008. I actually attended a drag race there during one of my trips to Muskegon to go to the Getty Drive-In. It seemed pretty cool (see video link on this page). There were hopes the drag strip would be sold and re-open under new management but it has not happened as of 2022.
3/8 Mile Dirt Oval - AKA Birchwood Speedway