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Cummins V378, V504 and V555 Essential Diesel Engine Bolt Tightening Torques

 
Cummins V378, V504 and V555 Main Bearing Bolt torque  

Step 1 = min 55 lb.ft, 75 Nm - max = 65 lb.ft, 88 Nm
Step 2 = min 115 lb.ft, 156 Nm - max = 125 lb.ft, 170 Nm
Step 3 = min 165 lb.ft, 224 Nm - max = 175 lb.ft, 237 Nm
Step 4 = Loosen
Step 5 = min 55 lb.ft, 75 Nm - max = 65 lb.ft, 88 Nm
Step 6 = min 115 lb.ft, 156 Nm - max = 125 lb.ft, 170 Nm
Step 7 = min 165 lb.ft, 224 Nm - max = 175 lb.ft, 237 Nm

Cummins V378, V504 and V555 Connecting Rod Bolt torque  

V6-378 and V8-504
Step 1 = min 20 lb.ft, 27 Nm - max = 25 lb.ft, 34 Nm
Step 2 = min 50 lb.ft, 68 Nm - max = 55 lb.ft, 75 Nm
Step 3 = Loosen
Step 4 = min 20 lb.ft, 27 Nm - max = 25 lb.ft, 34 Nm
Step 5 = 60 degrees in 30 degree increments

Cummins V8-555
Step 1 = min 40 lb.ft, 54 Nm - max = 45 lb.ft, 61 Nm
Step 2 = min 85 lb.ft, 115 Nm - max = 90 lb.ft, 122 Nm
Step 3 = Loosen
Step 4 = min 40 lb.ft, 54 Nm - max = 45 lb.ft, 61 Nm
Step 5 = 60 degrees

Cummins V378, V504 Cylinder Head Bolt torque  

Step 1 = 80 - 90 lb.ft, 108 - 122 Nm
Step 2 = 110 - 115 lb.ft, 149 - 156 Nm

Cummins V555 Cylinder Head Bolt torque  

Step 1 = 25 - 30 lb.ft, 34 - 41 Nm
Step 2 = 80 - 90 lb.ft, 108 - 122 Nm
Step 3 = 135 - 140 lb.ft, 183 - 190 Nm



Cummins V378, V504 and V555 Diesel Engine Specs

 
Cummins V378, V504 and V555 Displacement and arrangement  

Cummins V378
Displacement
6.2 liter, 378 CID

Cummins V504
Displacement
8.3 liter, 504 CID

Cummins V555
Displacement
9.1 liter, 555 CID

Arrangement
V8 4 stroke cycle engines with naturally aspirated and turbocharged variants

Cummins V378, V504 and V555 Power and torque 

V378 Power
106 kW, 146 hp @ 3000 rpm

V504 Power
141 kW, 195 hp @ 3000 rpm

V555 Power
160 kW, 215 hp @ 3000 rpm

VT555 Power
239 kW, 320 hp @ 3000 rpm

Torque
V378 Engine Torque
306 lb.ft, 415 Nm @ 1900 rpm

V504 - CPL 5023 Engine Torque
408 lb.ft, 554 Nm @ 1900 rpm


Cummins V378, V504 and V555 Bore, stroke and compression ratio  

Bore all models
4.625", 117.5 mm

V378, V504 Stroke
3.750", 95.25 mm

V555 Stroke
4.125", 104.8 mm

Compression Ratio
Naturally Aspirated 17.0:1
turbocharged 16.0:1

Cummins V378, V504 and V555 Dimensions and weight  

Dimensions approx
V8-504
length 44 in, 1117 mm
width 33 in, 838 mm
height 33 in, 838 mm

V8-555
length 48 in, 1219 mm
width 35 in, 889 mm
height 33 in, 838 mm

Weight approx
V8-504
1535 lb, 698 kg

V8-555 Turbocharged
2040 lb, 927 kg




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