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 Number 12621766
Bore Spacing 4.400 in.
Displacement 6.2L / 376 c.i.d.
Bore Dia. 4.065 in.
Stroke 3.622 in.
Deck Height 9.240 in.
Thrust Bearing Location #3 Main
Main Cap Style 6-Bolt
Main Housing Bore Dia. 2.751 in.
Block Part Number 12584724, 12584727
Cam-to-Crank Centerline 4.914 in.
Material Aluminum

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 Digit Year Make Model
W 2008-13 Chevy Corvette (Base and Z51)
W 2009 Pontiac G8 GXP
W 2010-13 Chevy Corvette Grand Sport*
W 2010-15 Chevy Camaro SS (manual)
W 2014-17 Chevy SS
N/A** 2009-15 Holden HSV
N/A** 2015-17 Holden Commodore VF

LS3 Cylinder Head Specs

Intake Port Shape Rectangle
Cylinder Head Bolt Style Torque to Yield (TTY)
Combustion Chamber Volume 68cc
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
Material Aluminum
Casting Number 821

LS3 Valvetrain Specs

Pushrod Length 7.385 in.
Lifter Body Diameter 0.842 in.
Timing Chain Guide Style Spring Loaded Tensioner
Rocker Arm Mounting Style Pedestal
Rocker Arm Style Die-Cast, Roller Fulcrum
Rocker Ratio 1.7
Rocker Offset Intake Rocker, 6.25mm
Valve Spring Style Beehive
Valve Spring Color Natural
Valve Angle 15 Degrees
Intake Valve Material Steel – Hollow Stem
Intake Valve Dia. 2.165 in.
Exhaust Valve Material Steel – Solid Stem
Exhaust Valve Dia. 1.590 in.
Lifter Link Style Plastic Lifter Tray
Lifter Style Hydraulic Roller

LS3 Cam Specifications

Engine Version Wet Sump Dry 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 Separation 117° 117°
Camshaft Part Number 12623066 12631811
Cam Gear Attachment 1-Bolt 3-Bolt
Cam Gear Poles 4x 4x
Active Fuel Management (AFM) No No
Variable Valve Timing (VVT) No No

LS3 Rotating Assembly Specs Wet Sump

Engine Version Wet Sump
Piston Material Hypereutectic Cast Aluminum Alloy
Piston Style Flat Top
Piston Volume 0cc
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
Connecting Rod Part Number 12649190
Crankshaft Material Cast Iron
Crankshaft Part Number 12597569
Crankshaft Rear Flange 6-Bolt
Crankshaft Main Journal 2.559 in.
Crankshaft Rod Journal 2.100 in.
Reluctor Wheel 58x

LS3 Rotating Assembly Dry Sump 

Engine Version Dry Sump
Piston Material Hypereutectic Cast Aluminum Alloy
Piston Style Flat Top
Piston Volume 0cc
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
Connecting Rod Part Number 12649190
Crankshaft Material Forged Steel
Crankshaft Part Number 12630431
Crankshaft Rear Flange 6-Bolt
Crankshaft Main Journal 2.559 in.
Crankshaft Rod Journal 2.100 in.
Reluctor Wheel 58x

Other Key LS3 Engine Specs

Flex Fuel Capable (E-85) No
PCM E38
Throttle Control Electronic, Drive-by-Wire
Fuel Injector Part Number 12576341
Fuel Injector Flow 42 lbs./hr. at 58 psi
Oil Pump Standard Volume (.96 c.i. per rev. @ 33 psi)
Fuel Injector Length (between O-Rings) 1.5 in.
Fuel Injector Connector EV6-USCAR
Crankshaft Reluctor Ring 58x
Camshaft Sensor Front mount, 4x
Oil Pan Sump Location Varies By Model
Throttle Body 90mm, 4-Bolt, Gold Blade
Oil Pump Part Number 12678151 (wet sump), 12623097 (dry sump)
Intake Manifold Car-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.

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