6.0L LC8

6.0L LC8 CNG/LPG Small-Block Engine front side view
Horsepower:  360 hp @ 5400 rpm*
Torque:  380 lb-ft @ 4200 rpm*
Cylinders:  8
Fuel Type:  Unleaded Gasoline, CNG, LPG

6.0L LC8 Features
& Specifications

The 6.0L V-8 LC8 is a dedicated CNG (compressed natural gas) version of the L96 engine found in Chevrolet and GMC heavy duty full-size pickups and vans. It is virtually identical to the L96, but includes hardened exhaust valves and valve seats for improved wear resistance and durability with gaseous fuel systems.

Type: 6.0L Gen IV V-8 Small Block
Displacement: 5967 cc
Engine Orientation: Longitudinal
Compression Ratio: 9.7:1
Valve Configuration: Overhead valves
Valves per Cylinder: 2
Assembly Sites: Silao, Mexico
Valve Lifters: Hydraulic roller
Firing Order: 1 - 8 - 7 - 2 - 6 - 5 - 4 - 3
Bore x Stroke: 101.6 x 92 mm
Fuel System: Sequential Fuel Injection
Fuel Type: Regular Unleaded, CNG, LPG
Horsepower: 360 hp (268 kW) @ 5400 rpm*
301 hp (225 kW) @ 5000 rpm**
332 hp (248 kW) @ 4800 rpm***
Torque: 380 lb-ft ( 515 Nm ) @ 4200 rpm*
333 lb-ft ( 452 Nm ) @ 4200 rpm**
370 lb-ft ( 501 Nm ) @ 4400 rpm ***
Maximum Engine Speed: 6000 rpm (Silverado)
Emissions Controls: Catalytic converter, Three-way catalyst, Positive crankcase ventilation
Block: Cast iron
Cylinder Head: Cast aluminum
Intake Manifold: Composite
Exhaust Manifold: Cast nodular iron
Main Bearing Caps: Powder metal
Crankshaft: Cast nodular iron with undercut and rolled fillets
Camshaft: Hollow steel
Connecting Rods: Powder metal
*As tested in Chevrolet Silverado HD Gasoline.
**As tested in Chevrolet Silverado HD CNG.
***As tested in Chevrolet Express LPG.

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