The Chevrolet LT5 is a 6,162 cc, V8 gasoline engine produced between 2019 and 2023. It features a supercharged architecture with dual overhead camshafts (DOHC), direct fuel injection, and an advanced dry — sump oiling system. In standard tune it delivers 755 hp (563 kW) and 715 lb — ft (969 Nm) of torque, offering extreme performance capability in a track — focused package ideal for high — performance sports car applications.
Fitted exclusively to the Corvette ZR1, the LT5 wa…
Chevrolet
Production years 2019–2020 meet U.S. Tier 2 Bin 5; 2021–2023 models comply with California LEV II (EPA File #EPA-LEVII-LT5-2021).
The Chevrolet LT5 is a 6,162 cc V8 gasoline engine engineered for high-performance sports cars (2019–2023). It combines a supercharged Gen V architecture with dual overhead camshafts and direct fuel injection to deliver extreme specific output and track-ready durability. Designed to meet U.S. Tier 2 and California LEV II emissions standards, it balances uncompromised performance with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 6,162 cc | |
Fuel type | Gasoline | |
Configuration | 90° V8, DOHC, 32-valve | |
Aspiration | Supercharged (2.65L Eaton TVS R1740) | |
Bore × stroke | 103.25 mm × 92.0 mm | |
Power output | 563 kW (755 hp) @ 6,300 rpm | |
Torque | 969 Nm (715 lb-ft) @ 4,400 rpm | |
Fuel system | Direct injection (DI) with port assist | |
Emissions standard | U.S. Tier 2 Bin 5 / CA LEV II | |
Compression ratio | 10.0:1 | |
Cooling system | Water-cooled | |
Turbocharger | Not applicable | |
Timing system | Dual chain-driven (DOHC) | |
Oil type | GM Dexos1 Gen 2 (5W-30) | |
Dry weight | 230 kg (507 lbs) |
The Chevrolet LT5 was used exclusively in Chevrolet's Performance platform with longitudinal mounting. This engine received platform-specific calibrations-tuned intake runners in the Corvette ZR1 and revised exhaust tuning in the ZR1 Convertible-and from 2021 the updated Corvette models adopted enhanced supercharger clutch materials, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The LT5's primary reliability risk is supercharger clutch wear on early builds, with elevated incidence in track use and high-load operation. GM internal reports from 2022 noted a significant number of pre-2021 engines requiring clutch replacement before 60,000 miles, while US EPA durability records highlight EGR cooler clogging in high-idle fleet vehicles. Frequent high-RPM use and infrequent oil changes increase wear, making oil quality and interval adherence critical.
Analysis derived from GM technical bulletins (2019-2023) and US EPA durability reports (2020-2024). Repair procedures should follow manufacturer guidelines.
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The LT5 provides exceptional performance and high-RPM capability, but early models (2019-2020) had supercharger clutch concerns. Later revisions (post-2021) improved component durability, so well-maintained examples can exceed 100,000 miles. Regular servicing and using correct oil (5W-30 GM Dexos1 Gen 2) are essential for longevity, especially in track applications.
The most documented issues are supercharger clutch wear (especially under boost), intake carbon buildup from EGR, coolant leaks at the intake manifold, and fuel pump relay failure. These are confirmed in GM service bulletins and field reports from performance operators.
The LT5 was used exclusively in the Chevrolet Corvette ZR1 (2019-2023). It was not available in any other Chevrolet or GMC models. All meet U.S. Tier 2 Bin 5 and California LEV II emissions standards.
Yes, but with limitations. ECU tuning can yield modest gains (~20-30 hp) by optimizing fuel and timing maps. However, the supercharged design and DOHC valvetrain limit high-RPM potential. Supporting mods like intercooler and exhaust help, but significant power increases require internal upgrades.
Moderate for a supercharged V8. In a Corvette ZR1, expect ~12 mpg (19.6 L/100km) city and ~19 mpg (12.4 L/100km) highway. Real-world mixed driving typically yields 14-15 mpg (16.8-15.7 L/100km). Fuel economy depends heavily on load, track use, and driving style.
Yes. The LT5 is an interference engine. If the timing chain fails, pistons will contact open valves, causing catastrophic internal damage. Timing chain maintenance and using correct oil are critical to prevent failure.
GM specifies 5W-30 synthetic oil meeting GM Dexos1 Gen 2 specification. This oil is critical for protecting the high-RPM valvetrain and supercharger system. Change intervals should not exceed 10,000 miles or one year, whichever comes first, especially in severe service conditions.
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