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 performance while maintaining street drivability. Emissions compliance was achieved through precise electronic throttle control and advanced catalytic converters, allowing compliance with U.S. Tier 2 Bin 5 standards for its production era.
One documented concern is potential for supercharger coupler failure under extreme conditions, which can lead to sudden loss of boost. This issue, addressed in GM Service Bulletin 10-06-04-001, is attributed to material fatigue in the factory-installed coupler. GM later issued a revised, more robust coupler for high-performance applications.
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 supercharger provides instant, massive power ideal for track use but demands vigilant maintenance of the coupler and intercooler system. The low 9.1:1 compression ratio necessitates premium fuel (91+ octane) to prevent detonation under boost. The timing chain is robust but should be inspected at 150,000 miles. Supercharger coupler failure is a known risk under extreme conditions; replacement with the updated GM hardware per SIB 10-06-04-001 is advised for track-driven vehicles. Coolant should be flushed every 5 years to protect the aluminum components.
Oil Specs: Requires GM dexos1™ specification (GM Owner's Manual). Critical for supercharger and engine longevity under high stress.
Emissions: Certified to U.S. EPA Tier 2 Bin 5 standards (EPA Certificate #AALMF.LS962). Applies to all model years 2009–2013.
Power Ratings: Measured under SAE J1349 standards. Requires 91+ octane fuel to achieve rated output and prevent engine damage (GM PT-2009).
GM Technical Service Manuals: J-45248, PT-2009
GM Service Bulletin: 10-06-04-001
U.S. Environmental Protection Agency: Certificate of Conformity #AALMF.LS962
SAE International: J1349 Engine Power Certification Standards
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.
Locate the engine code 'LS9' cast into the front of the engine block, near the timing cover (GM Service Manual J-45248). The 8th digit of the VIN is '9' for this engine. Visually, it is identified by its prominent Eaton TVS R2300 supercharger mounted atop the engine, visible through the hood's polycarbonate window, and dual overhead camshaft covers. Critical differentiation from the naturally aspirated LS7: The LS9 has a large supercharger assembly, intercooler, and associated plumbing; the LS7 does not. Supercharger-specific components are not interchangeable with non-supercharged engines.
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.
Find answers to most commonly asked questions about GM LS9.
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