My dad, 78 this year, says he remembers a lame roller-coaster being at "Flint Park." I do not remember a Flint Park.
Keeping the prospective, I went to Central for two of my four yrs. in HS. Later, worked at Whittier and Central.. That said, I remember the rickety old roller coaster at Flint Park. On a still summer night, you could hear the screams and clattering rails ten miles away. I loved it and the roller skating too. Flint's own carny experience, midway and all. Pretty cheesy for the adults, but the kids really enjoyed it.
It was an amusement park on the north side, by Devil's Lake (more formally known as Flint Park Lake). Here are some folks' memories of it. I don't remember much about it, because it shut down when I was six years old, but my grandmother lived a couple blocks from it, on Baldwin near Dupont.
One of probably many mentions here:http://www.flintexpats.com/2009/06/flint-postcards-flint-park-dodgem.html
Thanks for commenting. You might enjoy my book about Flint called "Teardown: Memoir of a Vanishing City," a Michigan Notable Book for 2014 and a finalist for the 33rd Annual Northern California Book Award for Creative NonFiction. Filmmaker Michael Moore described Teardown as "a brilliant chronicle of the Mad Maxization of a once-great American city." More information about Teardown is available at www.teardownbook.com.