There are slight variations depending on chassis.

All models:1978-84

Bore/stroke: 90.9/92.4
Total eff. piston displacement in cc:2998
compression ratio: 21.5:1
Max. engine rpm (no load): 4900-5200


W116
Engine output:
KW/rpm: 85/4200(other models:89/4350)

SAE net bhp/rpm: 110/4200 (1980:120/4350)
other models: 170/2400


W116
Max. torque
Nm/rpm:235/2400(other models:250/2400)

SAE net lbf-ft./rpm:168/2400(1980:170/2400)
other models:170/2400