Cummins 4BT – Base Engine Components Specifica­tions – Camshaft

• Journal Diameter (Minimum)
53.962 mm [2.1245 in]
• Valve Lobes (Min. Dia. at Peak of Lobe)
Intake               47.040 mm [1.852 in]
Exhaust            46.770 mm [1.841 in]
• Lift Pump Lobe (Min. Dia. at Peak of Lobe)
35.5 mm [1.398 in]