The Chevrolet LBF (49CUL3) is a 3,600 cc, V6 gasoline engine produced between 2010 and 2015. It features a DOHC 24 — valve configuration with variable valve timing (VVT) and direct fuel injection (SIDI), delivering balanced performance and efficiency. In standard applications, it produces 217 kW (294 PS) and 367 Nm of torque.
Fitted to models such as the Chevrolet Impala, Caprice PPV, and Holden Commodore (VF), the LBF was engineered for fleet, police, and performance sed…
Production years 2010–2013 meet LEV2-Bin5 standards in North America; 2014–2015 models may have enhanced catalyst systems for stricter fleet compliance (EPA Certification #EPA-ENG-360LBF).
The Chevrolet LBF (49CUL3) is a 3,600 cc V6 gasoline engine engineered for full-size sedans and fleet applications (2010–2015). It combines spark-ignition direct injection (SIDI) with variable valve timing (VVT) to deliver responsive mid-range power and improved fuel efficiency. Designed to meet LEV2-Bin5 and Euro 5 emissions standards, it balances performance with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 3,600 cc | |
Fuel type | Gasoline (Regular Unleaded, 87 AKI min) | |
Configuration | V6, DOHC, 24-valve | |
Aspiration | Naturally Aspirated | |
Bore × stroke | 94.0 mm × 86.0 mm | |
Power output | 217 kW (294 PS) @ 6,300 rpm | |
Torque | 367 Nm @ 3,200 rpm | |
Fuel system | Spark Ignition Direct Injection (SIDI) | |
Emissions standard | LEV2-Bin5 (US), Euro 5 (export) | |
Compression ratio | 11.3:1 | |
Cooling system | Water-cooled | |
Turbocharger | Not applicable | |
Timing system | Dual chain (DOHC) | |
Oil type | GM dexos1 Gen 2 (5W-30) | |
Dry weight | 185 kg |
The Chevrolet LBF (49CUL3) was used across Chevrolet's W-platform and Holden VF Commodore platforms with longitudinal mounting and shared with Holden for Australian and Middle East markets. This engine received platform-specific adaptations-fleet-tuned ECU calibrations in the Caprice PPV and revised exhaust manifolds in the Impala-and from 2014 the facelifted Holden VF II adopted updated valve coatings, creating interchange limits. Partnerships allowed Holden to utilize GM's SIDI V6 architecture for local assembly. All adaptations are documented in OEM technical bulletins.
The LBF (49CUL3)'s primary reliability risk is intake valve carbon buildup, with elevated incidence in city-driven fleet vehicles. GM field reports from 2014 indicated a significant number of Impala and Caprice PPV units requiring intake cleaning before 80,000 km, while EPA durability testing noted increased hydrocarbon emissions in high-mileage SIDI engines. Stop-start cycles and low-speed operation reduce valve cleaning effect, making periodic maintenance critical.
Analysis derived from General Motors technical bulletins (2010-2016) and National Highway Traffic Safety Administration (NHTSA) field reports (2012-2018). 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 LBF (49CUL3) is generally robust with strong internals, but long-term reliability depends on maintenance. Carbon buildup on intake valves is common in city-driven vehicles, and VVT actuators may wear if oil changes are delayed. When serviced regularly with dexos1 oil and periodic intake cleaning, these engines can exceed 200,000 km with minimal issues.
The most common issues are intake valve carbon buildup, VVT actuator wear, high-pressure fuel pump failure, and coolant leaks from the intake manifold gasket. These are documented in GM service bulletins and NHTSA field reports. Regular maintenance significantly reduces the risk of major repairs.
The LBF (49CUL3) was used in the Chevrolet Impala (2010–2015), Caprice PPV (2011–2015), and Chevrolet SS (2014–2015). It was also used in the Holden Commodore VF (2013–2017) and related models in Australia and the Middle East. All are longitudinal, rear-wheel-drive applications.
Yes. The LBF responds well to ECU tuning, with safe gains of +20-30 kW achievable through calibration changes. Supporting mods like exhaust and intake upgrades can increase output further. However, due to its SIDI design, careful tuning is required to avoid pre-ignition or carbon accumulation.
In the Chevrolet Impala, the LBF achieves approximately 11.8 L/100km (city) and 7.8 L/100km (highway), or about 24 mpg UK combined. The Caprice PPV and SS see slightly higher consumption due to weight and performance tuning. Real-world figures vary based on driving conditions and load.
Yes. The LBF is an interference engine. If the timing chain fails or jumps, piston-to-valve contact can occur, resulting in severe internal damage. Proper maintenance of the timing system and use of correct oil are essential to prevent such failures.
GM specifies dexos1 Gen 2 (5W-30) synthetic oil for the LBF engine. Oil changes should be performed every 10,000 km or annually to protect the VVT system and prevent carbon buildup. Using non-compliant oils may void warranty and accelerate wear.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with CHEVROLET or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
CHEVROLET Official Site
Owner literature, service manuals, technical releases, and plant documentation.
EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialCHEVROLET documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed”.
All external links open in new tabs. Please verify current availability of resources.