I think the "Car Guy" term for manual trans that BV couldn't recall is CRASH BOX.
A Crash Box is a modified manual trans that makes high rpm up shifts more reliable....but at the cost of making your downshifts less smooth.
Every other tooth of the synchro gears is removed.
The term eventually became slang with some people for any manual trans.
Amazing the things that Hot Rodders have come up with over the years just to get an edge over the competition.