Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1994C 2500 SUBURBAN 2WD V8-454 7.4LREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINEOIL PUMP, ENGINE
1994 Chevrolet C 2500 Suburban 2WD V8-454 7.4L
Oil Pump, Engine
1994 Chevrolet C 2500 Suburban 2WD V8-454 7.4LSECTION Oil Pump, Engine
Engine Liter/CID 7.4L/V8-454
All specifications given in inches.
Rotor Backlash [04]
Rotor To Body Clearance [04]
Rotor End Clearance [01] [04]
Gear Pocket
Depth [04]
Diameter [04]
Rotor Thickness [04]
Rotor Diameter [04]
Relief Valve To Body Clearance [04]
[01] Measured between pump cover mating surface & end of rotors using straight edge & suitable feeler gauges.
[04] Pump rotor & body are not serviced separately. If inspection reveals damaged or worn components, the pump must be replaced as a complete assembly.
All specifications given in inches.
Rotor Backlash [04]
Rotor To Body Clearance [04]
Rotor End Clearance [01] [04]
Gear Pocket
Depth [04]
Diameter [04]
Rotor Thickness [04]
Rotor Diameter [04]
Relief Valve To Body Clearance [04]
[01] Measured between pump cover mating surface & end of rotors using straight edge & suitable feeler gauges.
[04] Pump rotor & body are not serviced separately. If inspection reveals damaged or worn components, the pump must be replaced as a complete assembly.
RENDER: 1.0x
NO RELATED
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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.