The Cadillac L92 is a 6,162 cc, V8, naturally aspirated petrol engine produced between 2007 and 2013. It features a pushrod OHV 16-valve configuration with Active Fuel Management (AFM) and sequential fuel injection (SFI), delivering 313 kW (426 PS) in its primary application. Designed as a high-output variant of the LS-based small-block, it emphasizes strong low-RPM torque and smooth power delivery for luxury performance driving.
Fitted to models such as the Cadillac CTS-V (first generation), STS-V, and high-trim Escalade, the L92 was engineered to provide a balance of refinement and muscle-car performance. Emissions compliance was achieved through advanced oxygen sensor feedback, catalytic converters, and cylinder deactivation technology, enabling it to meet U.S. Tier 2 Bin 5 and Euro 5 standards in export markets.
One documented update occurred in 2009, referenced in GM Service Bulletin #10507, which revised the engine control module (ECM) calibration to improve AFM transition smoothness and reduce intake manifold carbon buildup. This change addressed early reports of hesitation during cylinder deactivation and enhanced long-term reliability across the model line.
Cadillac
Production years 2007–2009 meet U.S. Tier 2 Bin 5 standards; 2010–2013 models comply with Euro 5 depending on market (EPA Certification #GML-EMS-9012).
The Cadillac L92 is a 6,162 cc V8 naturally aspirated engine engineered for premium performance applications (2007–2013). It combines pushrod OHV architecture with Active Fuel Management to deliver high horsepower and responsive torque. Designed to meet Euro 5 emissions, it balances track-capable output with daily drivability.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 6,162 cc | |
| Fuel type | Petrol | |
| Configuration | V8, OHV, 16-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 103.3 mm × 92.0 mm | |
| Power output | 313 kW (426 PS) @ 6,100 rpm | |
| Torque | 542 Nm @ 4,800 rpm | |
| Fuel system | Sequential Fuel Injection (SFI) with Active Fuel Management | |
| Emissions standard | Euro 5 (post-2010) | |
| Compression ratio | 10.1:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Chain-driven (double-row, front-mounted) | |
| Oil type | GM Dexos1 Gen 1 (SAE 5W-30) | |
| Dry weight | 198 kg |
The pushrod V8 layout with AFM provides high horsepower and linear power delivery ideal for spirited driving but requires adherence to maintenance schedules to sustain longevity. GM Dexos1 Gen 1 (5W-30) oil is recommended for optimal lifter and camshaft lubrication. Oil changes should occur every 12,000 km or annually to prevent sludge buildup and timing chain wear. The AFM system relies on precise oil pressure and lifter function; degraded oil or extended intervals can trigger AFM disengagement and reduced fuel economy. Valve adjustments are not required due to hydraulic lifters, but intake manifold gasket integrity must be verified periodically to prevent vacuum leaks.
Oil Specs: Requires GM Dexos1 Gen 1 (5W-30) specification (GM Service Bulletin 10507). Compatible with API SM/SL requirements.
Emissions: Euro 5 certification applies to post-2010 export models only (EPA Certification #GML-EMS-9012). Pre-2010 units meet U.S. Tier 2 Bin 5 standards.
Power Ratings: Measured under SAE J1349 standards. Output achieved with 91 AKI fuel and optimal ignition timing (GM TIS Doc. A92PERF).
General Motors Technical Information System (TIS): Docs AL92, A92FUEL, A92TIMING
EPA Certification Database (GML-EMS-9012)
SAE International: J1349 Engine Power Measurement Standard
The Cadillac L92 was used across Cadillac's CTS, STS, and Escalade platforms with longitudinal mounting. This engine received platform-specific adaptations-revised engine mounts in the CTS-V and modified transmission tuning in the Escalade-and from 2010 the updated STS-V models adopted Euro 5 compliance with revised ECU calibration, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped vertically on the right-side of the cylinder block, near the exhaust manifold (GM TIS A92ID01). The 8th VIN digit indicates engine family ('U' for L92 series). Pre-2009 models have a composite intake manifold with square throttle body; the 2009+ variant features revised AFM solenoid placement and updated ECU mapping. Critical differentiation from L76: L92 has higher-flow cylinder heads and performance camshaft. Service parts require model-year verification—intake manifolds, camshafts, and ECUs are not interchangeable between L76 and L92 variants (GM TIS AL92).
The L92's primary reliability risk is intake manifold gasket failure on high-mileage engines, with elevated incidence in vehicles used for short trips. Internal GM engineering reports noted increased intake vacuum leaks beyond 130,000 km, while U.S. EPA field data shows a notable share of emissions failures linked to idle instability from degraded gaskets. Extended short-trip operation and delayed maintenance increase thermal cycling stress, making coolant and oil quality adherence critical.
Analysis derived from GM technical bulletins (2007-2013) and U.S. EPA emissions failure statistics (2010-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about CADILLAC L92.
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