According to the factory book for '46, standard issue for engines was as follows for each series...
3000 thru 4000 : 216.5 THRIFT-MASTER (90HP @ 3100 RPM - Torque= 174@1200-2000 rpm)
5000: 235.5 LOAD-MASTER (90 hp @ 3100 rpm - Torque= 189 @ 1000-1900 rpm)
6000: 235.5 LOAD-MASTER (93 hp @ 3100 rpm - Torque= 192 @ 1000-1900 rpm)
Obviously the bigger trucks had bigger engines but the 6000's must have been "tweaked" just a tiny bit. Note that all the above are "gross" ratings.
