2006 Vortec 8100 8.1L V-8 (L18)

Type:

8.1L V-8

Displacement:

8128cc (496 ci)

Compression ratio:

9.1:1

Valve configuration:

overhead valve (2 valves per cylinder)

Assembly site:

Tonawanda, NY

Valve lifters:

hydraulic roller

Firing order:

1 - 8 - 7 - 2 - 6 - 5 - 4 - 3

Bore x stroke:

107.95 x 111mm

Fuel system:

sequential fuel injection
330 hp (246 kw) @ 4200 rpm (L18 Silverado, Sierra, WCC)
325 hp (242 kw) @ 4000 rpm (MD L18 LRW option)
325 hp (242 kw) @ 4200 rpm (L18 Suburban, Yukon XL, Avalanche)
295 hp (220 kw) @ 3600 rpm (MD L18 LRZ option)
450 lb-ft (610 Nm) @ 3200 rpm (L18 Silverado, Sierra, WCC)
450 lb-ft (610 Nm) @ 2800 rpm (MD L18 LRW option)
447 lb-ft (606 Nm) @ 3200 rpm (L18 Suburban, Yukon XL, Avalanche)
440 lb-ft (597 Nm) @ 3200 rpm (MD L18 LRZ option)
5000 rpm (Avalanche/Silverado/Suburban, Sierra/Yukon XL, WCC, C 4/5 Commercial)
4200 rpm (C 6/7/8 MD without air brake compressor)
4000 rpm (C 6/7/8 MD with air brake compressor)
evaporative system
catalytic converter
Returnless fuel system (Silverado, Sierra, WCC, Marine,C 4/5/6/7 Commercial)
Chevrolet Avalanche/2500 HD and 3500 Silverado/Suburban (option)
GMC 2500 HD and 3500 Sierra/Yukon XL (option)
Chevrolet Kodiak, GMC TopKick (Commercial C 4/5/6/7 base)
Chevrolet Kodiak, GMC TopKick (Commercial C8 042 option)
Workhorse Custom Chassis (option)

Block: cast

iron

Cylinder head:

cast iron

Intake manifold:

cast aluminum

Exhaust manifold:

cast stainless steel

Main bearing caps:

cast nodular iron

Crankshaft:

cast nodular iron

Camshaft:

steel

Connecting rods:

forged steel
extended life spark plugs
extended life coolant
Coil-Near-Plug Ignition
Hex Chrome free coatings
Oil Life System (Silverado and Sierra)
electronic throttle control
floating pin pistons
GF4 oil
rate based diagnostics
metal carrier intake manifold gaskets
gaseous fuel compatable

Horsepower:

Torque:

Fuel shut off:

Additional features:

Emissions controls:

Applications:

MATERIALS