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 exhilarating performance and track-capable handling. Emissions compliance for its production period was achieved through direct fuel injection and advanced catalytic conversion, meeting Euro 6 standards.
One documented engineering update addressed potential oil pump drive failure, detailed in GM Service Bulletin #15344A. This was linked to material fatigue under high-RPM stress. The update, implemented in mid-2015, revised the oil pump drive shaft material and heat treatment to improve durability.
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 DOHC V8 provides exhilarating performance but requires adherence to 10,000 km oil change intervals using GM Dexos1 Gen 2 (5W-30) to maintain engine health and prevent oil pump drive failure. The chain-driven timing system is robust. Dual variable valve timing solenoids can become sluggish with poor oil quality, leading to performance codes. Early production engines (pre-mid-2015) should have the updated oil pump drive shaft installed if experiencing low oil pressure at high RPM, per GM SIB 15344A.
Oil Specs: Requires GM Dexos1 Gen 2 (5W-30) specification (GM SIB 15344A). Critical for VVT solenoid and oil pump drive longevity.
Emissions: Euro 6 certification applies to all 2013–2019 LT1 models (VCA Type Approval #VCA/EMS/5686).
Power Ratings: Measured under SAE J1349 standards. Output varies slightly by application (GM TIS Doc. A12423).
GM Technical Information System (TIS): Docs A12420, A12421, A12422, A12423, SIB 15344A
VCA Type Approval Database (VCA/EMS/5686)
SAE International: J1349 Engine Power Certification Standards
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.
Locate the engine code stamped on the front of the cylinder block, near the timing cover (GM TIS A12425). The 8th VIN digit typically corresponds to the engine type for GM models of this era. Visually, the LT1 is identifiable by its aluminum block and heads, and the direct injection fuel rail on the intake manifold. Critical differentiation from the LT4 engine: The LT1 is naturally aspirated, whereas the LT4 features a supercharger. Service parts, particularly for the induction and fuel systems, are not interchangeable between LT1 and LT4 engines.
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.
Find answers to most commonly asked questions about GM LT1.
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EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
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DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
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GOV.UK: Vehicle Approval
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VCA Certification Portal
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