I have a later model with EFI.
The 1990-1994 Supplementary Service Manual
states, on page 4A-23:
"Fuel cut
...
... when the engine speed exceeds 6,8000 r/min,
the fuel supply is cut to protect the engine by
making the injector operating time as ineffective
injection time. The normal injection is restored
when the engine speed is 6,500 r/min or lower. "
Carburated and EFI engines are very similar (almost identical).