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 Specs Review Video
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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