Chevrolet LS3 Engine Specs, Configurations, & More

Chevrolet LS3 Engine Specs

Here In this article, you will learn about the Chevrolet LS3 Engine Specs, Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More, Let’s discuss the Chevrolet LS3 Engine specifications, Valvetrain, performance, and Reviews.

LS3 Engine Specs

Chevrolet LS3 Engine overview

The LS3 is A Gen. 4, 6.2L small block engine utilised in 2009-2017 GM performance cars. The engine details and specs are for an original LS3 engine.

Mechanically, General Motors’ LS and LS-based Vortec engines were found in almost every branch in the GM family tree: Chevy, Pontiac, GMC, Cadillac, Buick–heck, there was even Saab, Hummer, and Isuzu received some LS admiration.

Although It is true that this manual is tailored To the LS3 version of the GM engine, it does provide general information on the LS engine family and links to other manuals covering the LS family.

LS3 Block Specs

Cam Housing Bore Dia.Bore 1/5 = 2.346, Bore 2/4 = 2.326, Bore 3 = 2.307 12584724, 12584727
Casting Number12621766
Bore Spacing4.400 in.
Displacement6.2L / 376 c.i.d.
Bore Dia.4.065 in.
Stroke3.622 in.
Deck Height9.240 in.
Thrust Bearing Location#3 Main
Main Cap Style6-Bolt
Main Housing Bore Dia.2.751 in.
Block Part Number12584724, 12584727
Cam-to-Crank Centerline4.914 in.
MaterialAluminum

LS3 Applications

Specifically, the LS3 engine utilised in The Corvette Grand Sport. It included a modified crankshaft and a dry sump oiling system. The format for VINs used by Australian automobiles is completely unique. In Australia, the VIN’s eighth digit does Not correspond to the vehicle’s engine.

VIN 8th DigitYearMakeModel
W2008-13ChevyCorvette (Base and Z51)
W2009PontiacG8 GXP
W2010-13ChevyCorvette Grand Sport*
W2010-15ChevyCamaro SS (manual)
W2014-17ChevySS
N/A**2009-15HoldenHSV
N/A**2015-17HoldenCommodore VF

LS3 Cylinder Head Specs

Intake Port ShapeRectangle
Cylinder Head Bolt StyleTorque to Yield (TTY)
Combustion Chamber Volume68cc
Intake Port ShapeRectangle
Intake Runner Volume257cc
Exhaust Port ShapeD-Port
Exhaust Runner Volume87cc
Intake Valve Diameter2.165 in.
Exhaust Valve Diameter1.590 in.
Cylinder Head Bolt StyleTorque to Yield (TTY)
Cylinder Head Bolt Size(10) M11 x 2 x 100, (5) M8 x 1.25 x 45
MaterialAluminum
Casting Number821

LS3 Valvetrain Specs

Pushrod Length7.385 in.
Lifter Body Diameter0.842 in.
Timing Chain Guide StyleSpring Loaded Tensioner
Rocker Arm Mounting StylePedestal
Rocker Arm StyleDie-Cast, Roller Fulcrum
Rocker Ratio1.7
Rocker OffsetIntake Rocker, 6.25mm
Valve Spring StyleBeehive
Valve Spring ColorNatural
Valve Angle15 Degrees
Intake Valve MaterialSteel – Hollow Stem
Intake Valve Dia.2.165 in.
Exhaust Valve MaterialSteel – Solid Stem
Exhaust Valve Dia.1.590 in.
Lifter Link StylePlastic Lifter Tray
Lifter StyleHydraulic Roller

LS3 Cam Specifications

Engine VersionWet SumpDry Sump
Duration @ .050 in. (int./exh.)204°/211°204°/211°
Valve Lift (int./exh.)0.551 in./.525 in.0.551 in./.525 in.
Lobe Separation117°117°
Camshaft Part Number1262306612631811
Cam Gear Attachment1-Bolt3-Bolt
Cam Gear Poles4x4x
Active Fuel Management (AFM)NoNo
Variable Valve Timing (VVT)NoNo

LS3 Rotating Assembly Specs Wet Sump

Engine VersionWet Sump
Piston MaterialHypereutectic Cast Aluminum Alloy
Piston StyleFlat Top
Piston Volume0cc
Wrist Pin Dia.0.9431 in. (full floating)
Connecting Rod MaterialPowdered Metal
Connecting Rod StyleI-Beam
Connecting Rod Length6.098 in.
Connecting Rod Housing Bore2.225 in.
Connecting Rod BoltsM9 x 1 x 43
Connecting Rod Part Number12649190
Crankshaft MaterialCast Iron
Crankshaft Part Number12597569
Crankshaft Rear Flange6-Bolt
Crankshaft Main Journal2.559 in.
Crankshaft Rod Journal2.100 in.
Reluctor Wheel58x

LS3 Rotating Assembly Dry Sump 

Engine VersionDry Sump
Piston MaterialHypereutectic Cast Aluminum Alloy
Piston StyleFlat Top
Piston Volume0cc
Wrist Pin Dia.0.9431 in. (full floating)
Connecting Rod MaterialPowdered Metal
Connecting Rod StyleI-Beam
Connecting Rod Length6.098 in.
Connecting Rod Housing Bore2.225 in.
Connecting Rod BoltsM9 x 1 x 43
Connecting Rod Part Number12649190
Crankshaft MaterialForged Steel
Crankshaft Part Number12630431
Crankshaft Rear Flange6-Bolt
Crankshaft Main Journal2.559 in.
Crankshaft Rod Journal2.100 in.
Reluctor Wheel58x

Other Key LS3 Engine Specs

Flex Fuel Capable (E-85)No
PCME38
Throttle ControlElectronic, Drive-by-Wire
Fuel Injector Part Number12576341
Fuel Injector Flow42 lbs./hr. at 58 psi
Oil PumpStandard Volume (.96 c.i. per rev. @ 33 psi)
Fuel Injector Length (between O-Rings)1.5 in.
Fuel Injector ConnectorEV6-USCAR
Crankshaft Reluctor Ring58x
Camshaft SensorFront mount, 4x
Oil Pan Sump LocationVaries By Model
Throttle Body90mm, 4-Bolt, Gold Blade
Oil Pump Part Number12678151 (wet sump), 12623097 (dry sump)
Intake ManifoldCar-Style

Chevrolet LS3 Engine Review

The Chevrolet LS3 engine is a 6.2-liter, naturally aspirated V8 engine that made its debut in 2007. It holds a well-deserved reputation as one of the finest V8 engines ever crafted and has found its way into a range of vehicles, such as the Chevrolet Corvette, Camaro, Pontiac G8, and Cadillac CTS-V.

Full review YouTube video check here.

Chevrolet LS3 Engine Specs FAQ

What are the specs on an LS3 motor?

From 2009 until 2017, the LS3 was a Gen. 4, 6.2L Small block engine used in GM performance cars. The engine specifications and information presented here are for the standard LS3 engine.

Is an LS3 a strong engine?

The LS3 Was designed for performance, like most LS engines. General Motors likely Used racing technologies To design the LS3 block. The LS3 engine has inherent brightness And strength.

What does LS in LS3 stand for?

In automobile Engines, LS stands for “luxury sport” And is typically seen in high-performance luxury vehicles, such as the Chevrolet. In the instance of the Chevrolet LS, this LS engine serves as the primary V8 for General Motors’ rear-wheel drive vehicle lineup.