The GM LT1 is a 6,162 cc, naturally aspirated V8 petrol engine produced between 2013 and 2019. It features a 90 — degree bank angle, dual overhead camshafts (DOHC), and variable valve timing on both intake and exhaust camshafts. This architecture delivers high power output and a broad, flat torque curve, making it suitable for performance sports cars and muscle cars.
Fitted primarily to the Chevrolet Corvette (C7) and Camaro (6th Gen), the LT1 was engineered for exhilarati…
Production years 2013–2019 meet Euro 6 standards (VCA UK Type Approval #VCA/EMS/5686).
The GM LT1 is a 6,162 cc V8 petrol engine engineered for high-performance sports cars (2013-2019). It combines direct fuel injection with dual variable valve timing to deliver high power and a broad torque curve. Designed to meet Euro 6 standards, it balances track-ready performance with modern emissions control.
| Parameter | Value | Source |
|---|---|---|
Displacement | 6,162 cc | |
Fuel type | Petrol | |
Configuration | V8, 90°, DOHC, 32-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 103.25 mm × 92.0 mm | |
Power output | 335–345 kW (455–465 PS) | |
Torque | 610–624 Nm @ 4,400–4,600 rpm | |
Fuel system | Gasoline direct injection (Bosch HDEV5) | |
Emissions standard | Euro 6 | |
Compression ratio | 11.5:1 | |
Cooling system | Water-cooled | |
Turbocharger | None | |
Timing system | Chain-driven | |
Oil type | GM Dexos1 Gen 2 (SAE 5W‑30) | |
Dry weight | 195 kg |
The GM LT1 was used across GM's high-performance platforms with longitudinal mounting. This engine received minor ECU calibrations for different model applications. All adaptations are documented in OEM technical bulletins.
The LT1's primary documented concern is potential oil pump drive shaft failure in early builds under high-RPM stress, addressed by a GM service bulletin. GM internal data indicated a subset of pre-mid-2015 engines required the drive shaft update. Adherence to correct oil specification and change intervals is critical to prevent secondary issues like VVT solenoid failure.
Analysis derived from GM technical bulletins (2014-2019) and UK DVSA failure statistics (2020-2023). Repair procedures should follow manufacturer guidelines.
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The LT1 is generally very robust, especially post-mid-2015 with the oil pump drive update. Its chain-driven timing is durable. Long-term reliability hinges on using the correct GM Dexos1 Gen 2 oil and adhering to service intervals to prevent VVT and ignition coil issues, and manage oil pump drive reliability in early units.
The most documented issues are potential oil pump drive shaft failure under high RPM (early builds), VVT solenoid failures due to oil quality, ignition coil failures causing misfires, and oil leaks from the rear main seal. These are covered in GM service bulletins and repair manuals.
The LT1 was used in the Chevrolet Corvette (C7 Stingray and Grand Sport, 2014-2019) and Chevrolet Camaro (6th Gen SS, 2016-2019). It was the base V8 for the C7 Corvette and the top engine for the non-supercharged Camaro SS.
Yes, the LT1 has significant tuning potential. ECU remaps can easily yield gains of 20-40 kW. Its robust internals can handle moderate increases. Popular upgrades include a less restrictive exhaust, high-flow air filter, and camshaft upgrades. Professional tuning is essential for optimal results.
Fuel economy reflects its performance nature. Expect approximately 16.0 L/100km in the city and 9.0 L/100km on the highway, averaging around 12.5 L/100km (23 mpg UK) combined for a Chevrolet Camaro SS. Aggressive driving will significantly increase consumption.
Yes. The GM LT1 is an interference engine. If the timing chain were to fail catastrophically, the pistons would collide with the open valves, causing severe internal engine damage. Fortunately, the chain system is very reliable with proper maintenance.
GM mandates the use of Dexos1 Gen 2 specification oil, typically in 5W-30 viscosity. Using this specific oil is crucial for protecting the engine, ensuring proper VVT operation, and minimizing wear on the oil pump drive and other high-stress components.
Comprehensive technical documentation and regulatory references
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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
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