Engine GM LR4

The 4.8-liter V8 GM LR4 engine was produced by the American concern from 1998 to 2007 and was installed on the Chevrolet Tahoe SUV in the back of the GMT 800 and the Yukon similar to it. This engine was also installed on Silverado and Sierra pickups, as well as Express and Savana minibuses.

Vortec line: LR4, LM7, LY2, LY5, LFA, L92, L86.


Production years 1998-2007
Displacement, cc 4806
Fuel system distributed injection
Power output, hp 255 – 285
Torque output, Nm 385 – 400
Cylinder block cast iron V8
Block head aluminum 16v
Cylinder bore, mm 96
Piston stroke, mm 83
Compression ratio 9.4
Features OHV
Hydraulic lifters yes
Timing drive chain
Phase regulator no
Turbocharging no
Recommended engine oil 5W-30
Engine oil capacity, liter 5.7
Fuel type petrol
Euro standards EURO 2
Fuel consumption, L/100 km (for Chevrolet Tahoe 2003)
— city
— highway
— combined
Engine lifespan, km ~450 000

The engine was installed on:

  • Chevrolet Express 2 (GMT610) in 2003 – 2006;
  • Chevrolet Silverado 1 (GMT800) in 1998 – 2007;
  • Chevrolet Tahoe 2 (GMT820) in 1999 – 2006;
  • GMC Savana 2 (GMT610) in 2003 – 2006;
  • GMC Sierra 2 (GMT800) in 1998 – 2007;
  • GMC Yukon 2 (GMT820) in 1999 – 2006.

Disadvantages of the GM LR4 engine

  • The key to trouble-free engine operation is the cleanliness of the radiators and the condition of the water pump;
  • Plastic tees burst from overheating, leaks of lubricant and antifreeze appear;
  • And the use of low-quality oils leads to rapid wear of the camshaft liners;
  • The weak points of the unit also include ignition coils, a gasoline pump and an adsorber.

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