Engine Oiling System

1974 Chevrolet LuvSECTION Engine Oiling System

Trochoid type oil pump is designed to deliver 4.75 gallons of oil per minute through the engine at a pump speed of 1400 RPM. At normal operating temperature, using 30 SAE oil, temperature will be 122°F. Lubricating system is designed to deliver oil at a rate of 57 psi.

Fig 1: Oiling Circuit
G09349881Courtesy of GENERAL MOTORS COMPANY

Crankcase Capacity  - 4.2 quarts.

Oil Filter  - Full-flow disposable canister type.

Normal Oil Pressure  - 57 psi.

Relief Valve  - Located on side of cylinder block near oil filter. Opening pressure of relief valve is 61-67 psi.

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.