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.

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.