The GM LS9 is a 6,162 cc, supercharged V8 petrol engine produced between 2009 and 2013. It features an Eaton TVS R2300 roots — type supercharger, aluminum block and heads, and dual overhead camshafts. This high — performance powerplant delivered 477 kW (638 PS) and 805 Nm of torque, with its forced induction system engineered for explosive acceleration in flagship applications.
Fitted exclusively to the Chevrolet Corvette ZR1, the LS9 was engineered for track — capable pe…
Production years 2009–2013 meet U.S. EPA Tier 2 Bin 5 standards (EPA Certificate of Conformity #AALMF.LS962).
The GM LS9 is a 6,162 cc supercharged V8 petrol engineered for flagship performance vehicles (2009-2013). It combines a roots-type supercharger with an aluminum block and cylinder heads to deliver explosive power and track-ready performance. Designed to meet U.S. Tier 2 Bin 5 standards, it balances extreme output with regulatory compliance for its era.
| Parameter | Value | Source |
|---|---|---|
Displacement | 6,162 cc | |
Fuel type | Petrol | |
Configuration | V8, 90°, OHV, 16-valve | |
Aspiration | Supercharged | |
Bore × stroke | 103.25 mm × 92.0 mm | |
Power output | 477 kW (638 PS) | |
Torque | 805 Nm @ 3,800 rpm | |
Fuel system | Sequential Multi-Port Fuel Injection (SFI) | |
Emissions standard | U.S. Tier 2 Bin 5 | |
Compression ratio | 9.1:1 | |
Cooling system | Water‑cooled | |
Supercharger | Eaton TVS R2300 roots-type (2.3L) | |
Timing system | Chain‑driven | |
Oil type | dexos1™ (SAE 5W‑30) | |
Dry weight | 220 kg |
The GM LS9 was used exclusively in the Chevrolet Corvette C6 ZR1 with longitudinal mounting. This engine received no major platform-specific adaptations or facelift revisions affecting core interchangeability within its production run. All applications are documented in OEM service manuals.
The LS9's primary reliability risk is supercharger coupler failure, with elevated incidence in track-driven or high-RPM engines. GM service data indicates this was a targeted issue leading to a technical service bulletin for performance applications. Aggressive driving and neglecting coolant/oil changes accelerate wear on the supercharger and engine internals, making adherence to maintenance schedules critical.
Analysis derived from GM technical service bulletins (2009-2013) and NHTSA consumer complaint data (2010-2015). Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
The LS9 is a robust and powerful engine with proper maintenance, but it has known high-performance weak points. The supercharger coupler is its primary concern and should be preemptively replaced in track-driven cars. The intercooler pump and oil cooler lines are also common failure points. Using premium fuel, changing oil regularly, and avoiding excessive heat are essential for longevity. With these addressed, the engine's bottom end is exceptionally strong.
The most frequent and critical issue is supercharger coupler failure, leading to sudden loss of boost. Intercooler pump failure causing heat soak, oil cooler line leaks, and ignition coil failure under boost are also very common. These are well-documented in GM service bulletins and owner communities.
The 6.2L LS9 supercharged petrol engine was used exclusively in the Chevrolet Corvette C6 ZR1 (2009-2013). It was the most powerful production engine offered by GM at the time and remains a highly sought-after performance engine.
Yes, the LS9 responds extremely well to tuning. A custom ECU tune can safely add 50-70 kW by optimizing boost and timing. Upgrading the supercharger pulley for increased boost is a common modification. The stock internals are very strong and can handle significant power gains. Supporting modifications like upgraded fuel injectors and a larger intercooler are recommended for maximum gains.
Fuel economy is very poor due to its performance focus. Expect around 18.1 L/100km city and 11.8 L/100km highway, or approximately 15 mpg combined (US). Real-world figures are often closer to 10-12 mpg (US) with spirited driving, reflecting its role as a flagship performance engine.
No. The GM LS9, like all Gen IV LS engines, is a non-interference engine. If the timing chain were to fail, the pistons would not collide with the valves, preventing catastrophic internal engine damage. This is a key design feature of the LS engine family.
GM mandates the use of dexos1™ full synthetic oil, typically in 5W-30 viscosity. Using the correct specification is critical for protecting the supercharger, timing chain, and engine internals under high stress. Oil should be changed every 5,000 miles or 6 months under normal conditions, or more frequently if the car is tracked or driven hard.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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