| Clearance | Cylinder bore diameter | 5.4 | IN | |
| Clearance | Piston stroke | 6.7 | IN | |
| Other | Air compressor air flow | 374 | L/min (13.2 cfm) @ 1250 rpm | C7 ACERT, C9 ACERT |
| Other | Air compressor air flow | 445 | L/min (15.7 cfm) @ 1250 rpm | C11 ACERT, C13 ACERT, C15 ACERT, C18 ACERT |
| Other | Air compressor air flow | 467 | L/min (16.5 cfm) @ 1250 rpm | C7 ACERT, C9 ACERT |
| Other | Air compressor air flow | 889 | L/min (31.4 cfm) @ 1250 rpm | C11 ACERT, C13 ACERT, C15 ACERT, C18 ACERT |
| Other | Combustion air inlet flow rate | 38.2 | m3/min | |
| Other | Gross Input Torque (TH55-E70) | 12 667 | N•m (9350 lb-ft) | |
| Other | Gross Input Torque (TH55-E90) | 12 677 | N•m (9350 lb-ft) | |
| Other | Maximum fuel flow from transfer pump to engine | 69.2 | G/HR | |
| Other | Maximum transfer pump priming lift without priming pump | 12.1 | FT | |
| Other | Maximum uninterrupted fill rate | 5.0 | G/MIN | |
| Other | Radiator air flow | 720 | m3/min | |
| Other | Radiator cooling package maximum elevation | 1524 | m (5000 ft) | with 50/50 water/Extended Life Coolant mixture |
| Other | Rating condition (diesel 7 L and higher) | 99 kPa (29.31 in Hg) dry barometer, 25°C (77°F) | | SAE J1995 inlet air standard |
| Other | Rating condition (diesel up to 6.6 L) | 100 kPa (29.5 in Hg) total barometric pressure, 1 kPa (.295 in Hg) vapor pressure, 25°C (77°F) | | ISO/TR14396 inlet air standard |
| Other | Rating condition (gas) | 100 kPa (29.61 in Hg) and 25°C (77°F) | | SAE J1349 standard |
| Other | Stall Torque Ratio (TH55-E70) | 2.23 | | |
| Other | Stall Torque Ratio (TH55-E90) | 2.23 | | |
| Other | Total cylinder displacement | 928 | CU IN | |
| Pressure | Exhaust system backpressure (maximum allowable) | 10.0 | kPa | |
| Pressure | Maximum allowable fuel return line restriction | 14.8 | in-HG | |
| Pressure | Maximum allowable fuel supply line restriction | 8.0 | in-HG | |
| Pressure | Maximum allowable intake restriction with clean element | 15 | in-H2O | |
| Pressure | Maximum allowable intake restriction with dirty element | 25 | in-H2O | |
| Pressure | Maximum allowable system back pressure | 40 | in-H2O | |
| Pressure | Maximum pressure drop from compressor outlet to manifold inlet (or mixer inlet for EGR) | 4.4 | in-HG | |
| Pressure | Normal fuel pressure in a clean system | 90.1 | PSI | |
| Pressure | Radiator air flow restriction (system) | 0.12 | kPa | |
| Pressure | WS255 pump plunger load | 238,000 | lb (107,960 kg) | |
| Pressure | WS273XD pump plunger load | 275,000 | lb (124 738 kg) | |
| Pressure | WS305XD pump plunger load | 250,000 | lb (113 398 kg) | |
| Speed | Maximum Input Speed (TH55-E70/TH55-E90 transmissions) | 1970 | rpm | |
| Speed | Minimum cranking speed required for start | 115 | RPM | |
| Speed | Rated Input Speed (TH55-E70/TH55-E90 transmissions) | 1900 | rpm | |
| Temperature | Exhaust stack gas temperature | 531.1 | deg C | |
| Temperature | Lowest ambient start temperature without aids | 32 | deg F | |
| Temperature | Max. allowable combustion air inlet temperature | 49 | deg C | |
| Temperature | Maximum allowable fuel temperature at engine outlet | 225 | deg F | |
| Temperature | Maximum allowable fuel temperature at transfer pump inlet | 140 | deg F | |
| Temperature | Maximum allowable jacket water outlet temperature | 219 | deg F | |
| Temperature | Radiator cooling package design ambient temperature | 48.9 | °C (120°F) | coolant mixture 50/50 (water/Caterpillar Extended Life Coolant), maximum elevation 1524 m (5000 ft) |
| Torque | Air compressor SAE "A" hydraulic pump drive maximum torque (374 L/min and 467 L/min compressors) | 60 | N•m (44 lb-ft) | C7, C9 ACERT |
| Torque | Air compressor maximum torque (374 L/min / 13.2 cfm @ 1250 rpm, C7/C9) | 60 | N·m (44 lb-ft) | 374 L/min (13.2 cfm) @ 1250 rpm |
| Torque | Air compressor maximum torque (467 L/min / 16.5 cfm @ 1250 rpm, C7/C9) | 60 | N·m (44 lb-ft) | 467 L/min (16.5 cfm) @ 1250 rpm |
| Torque | Bearing Nut Torque (129-3253 Spanner Socket, 121-9871 Bearing Nut) | 2375 | N·m | |
| Torque | Bearing Nut Torque (129-3254 Spanner Socket, 119-3711 Bearing Nut) | 2375 | N·m | |
| Torque | Locknut torque (260-0626 Spanner Socket Assembly, 1T-0229 High Torque Locknut) | 985 | N·m | |
| Torque | Solenoid nut torque (FT3198 Solenoid Tool, 352-2733 solenoid) | 3.75 | Nm | +/- .75 |
| Torque | Tightening torque for 369-5916 Lifting Eyebolt (M12 Hex Bit) | 115 | N·m | |
| Torque | Working torque capacity of locknut spanner wrenches (126-6608 / 126-6609) | 950 | N·m | |
| Voltage | Voltage level adjustment | +/-5.0 | % | |
| Voltage | Voltage regulation, steady state | +/-1.0 | % | |