Yeah, it does look like an old Detroit and possibly a series 60 but I'm not positive about that. I only drove the dam things. LOL It wasn't from running it backwards. Maybe the engine over revved from a broken governor shaft.
Had that happen to me. The tack went around twice and started on the third time around before we could shut it down. It ran fine after the governor was replaced. I drove it from Manada Hill, PA back to Champlain, NY. Had more power than before the shaft broke. LOL Then our shop mechanics got ahold of it and turned back the power.
__________________
Gary
Get in, Shu
T Up, Hang
On
!
Member of the Baltimore Built Brotherhood
MY GTO built 4th Week of March 1966
"Crusin' Is Not A Crime"
Keep yer stick on the ice.