6.0 LS Engine | Bravo

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The LY6 engine is a 6.0L Gen. 4 small block engine used in GM trucks and SUVs between 2007 and 2010. For marketing purposes, it was also known as the Vortec 6000. The engine specs and information listed here is for a stock LY6 engine.

Compression Ratio 9.6:1
Horsepower Rating 364 hp
Torque Rating 383 ft.-lbs.


Since LS and Vortec engines are so common, they’ve become the go-to performance and swap engines of the modern era. Upgrades to the motor can take it well beyond these numbers. Camshaft, intake, headers and exhaust can work serious magic once tuned. These motors are capable of making a lot of horsepower, and respond well to upgrades like turbos, superchargers, high-flow cylinder heads, intake systems, cams, and nitrous oxide.

This is a stock pull out, which may have some accessories, stock intake, stock manifolds, etc. 

Casting Number 12576181
Material Iron
Displacement 6.0L / 364 c.i.d.
Bore Dia. 4.000 in.
Stroke 3.622 in.
Deck Height 9.240 in.
Bore Spacing 4.400 in.
Thrust Bearing Location #3 Main
Main Cap Style 6-Bolt
Main Housing Bore Dia. 2.751 in.
Cam Housing Bore Dia. Bore 1/5 = 2.346 in. Bore 2/4 = 2.326 in. Bore 3 = 2.307 in.
Cam-to-Crank Centerline 4.914 in.

LY6 Rotating Assembly

LY6 Rotating Assembly Specs
Piston Material Hypereutectic Cast Aluminum Alloy
Piston Style Dished with valve reliefs
Piston Volume +6.7cc

Wrist Pin Dia. 0.9431 in. (Full Floating)
Connecting Rod Material Powdered Metal
Connecting Rod Style I-Beam
Connecting Rod Length 6.098 in.
Connecting Rod Housing Bore 2.225 in.
Connecting Rod Bolts M9 x 1 x 43
Rod Part Number
Connecting Rod Casting Number (Last 4 Digits) 3847
Crankshaft Material Cast Iron
Crankshaft Casting Number
(Last 3 Digits)
Crankshaft Main Journal Dia. 2.559 in.
Crankshaft Rod Journal Dia. 2.100 in.
Reluctor Wheel 58X

LY6 Cylinder Heads

LY6 Cylinder Head Specs
Casting Numbers 5364, 823
Material Aluminum
Combustion Chamber Volume 70cc
Intake Port Shape Rectangle
Intake Runner Volume 257cc
Exhaust Port Shape D-Port
Exhaust Runner Volume 87cc
Intake Valve Diameter 2.165 in.
Exhaust Valve Diameter 1.590 in.
Cylinder Head Bolt Style Torque to Yield (TTY)
Cylinder Head Bolt Size (10) M11 x 2 x 100, (5) M8 x 1.25 x 45

LY6 Camshaft Specs

LY6 Camshaft Specs
Duration @ .050 in. (int./exh.) 196°/208°
Valve Lift (int./exh.) 0.467 in./.479 in.
Lobe Separation Angle 116°
Cam Gear Attachment 1-Bolt
Cam Gear Poles 4x
Active Fuel Management (AFM) No
Variable Valve Timing (VVT) Yes

LY6 Valvetrain

LY6 Valvetrain Specs
Lifter Style Hydraulic Roller
Lifter Link Style Plastic Lifter Tray
Lifter Body Diameter 0.842 in.
Pushrod Length 7.385 in.
Rocker Arm Mounting Style Pedestal
Rocker Arm Style Die-Cast, Roller Fulcrum
Rocker Ratio 1.7
Rocker Offset Intake Rocker
Valve Spring Style Beehive
Valve Spring Color Natural
Valve Angle 15 Degrees
Intake Valve Material Steel, Solid Stem
Intake Valve Dia. 2.165 in.
Exhaust Valve Material Steel, Solid Stem
Exhaust Valve Dia. 1.590 in.

Other Key LY6 Specs

LY6 Throttle Body, Fuel Injector Specs & More
Intake Manifold Truck-Style
Throttle Body 87mm, 4-bolt
Throttle Control Electronic, Drive-by-Wire
Fuel Injector Part Number 12580681
Fuel Injector Flow 29.6 lb./hr. @ 58 psi
Flex Fuel Capable No
Fuel Injector Length Between O-Rings 1.900 in.
Fuel Injector Connector EV6 / USCAR
Crankshaft Reluctor Ring 58x
Camshaft Sensor Location Front mount, 4x on cam
Oil Pan Deep Rear Sump
Oil Pump Standard Flow
(0.96 c.i. per rev.)
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