In April-May of 1943, the SU-85B tank destroyer designed by the Gorky Automobile Plant underwent trials. The vehicle was a modernization of the SU-85A and featured the artillery LB-2 gun, 160-hp engine, and SU-76M chassis. The cabin, drive wheels, and spare parts kits were redesigned. Only one prototype was built.
The technical characteristics shown are for the Siege mode
Characteristics are specified for a vehicle with crew members trained to 100%.