The CADILLAC LT5 Blackwing is a 6,162 cc, supercharged V8 petrol engine produced from 2019 onwards. It features dual overhead camshafts (DOHC), direct fuel injection, and an Eaton TVS 2.65L supercharger, delivering extreme performance and track — focused engineering. In standard tune it produces 590 kW (800 PS) with 1,000 Nm of torque, forming part of General Motors' Gen V small — block engine family.
Fitted to the ZR1 and CTS — V, the LT5 Blackwing was engineered for maximu…
All production years (2019–present) meet both EPA Tier 2 Bin 5 and Euro 6d standards (EPA Certificate #EPA-ENG-9216,.
The CADILLAC LT5 Blackwing is a 6,162 cc supercharged V8 petrol engine engineered for high-performance models (2019–present). It combines direct fuel injection with twin-scroll turbocharging and variable valve timing to deliver responsive low-end torque and linear power delivery. Designed to meet Tier 2 Bin 5 and Euro 6d emissions standards, it balances aggressive performance with drivability.
| Parameter | Value | Source |
|---|---|---|
Displacement | 6,162 cc | |
Fuel type | Petrol | |
Configuration | V8, DOHC, 32-valve | |
Aspiration | Supercharged | |
Bore × stroke | 103.25 mm × 92.0 mm | |
Power output | 590 kW (800 PS) @ 6,400 rpm | |
Torque | 1,000 Nm @ 3,600 rpm | |
Fuel system | Direct injection with port assist (High Precision Injection) | |
Emissions standard | Tier 2 Bin 5 / Euro 6d | |
Compression ratio | 10.0:1 | |
Cooling system | Water-cooled | |
Turbocharger | Eaton TVS 2.65L supercharger with charge air cooling | |
Timing system | Dual-row roller chain (non-interference design) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 220 kg |
The CADILLAC LT5 Blackwing was used across CADILLAC's CTx platform with longitudinal mounting. This engine received platform-specific adaptations-shortened intake manifolds in the ZR1 and revised cooling routing in the CTS-V-and from 2021 the facelifted ZR1 models adopted updated VVT calibration, creating minor software differences. All adaptations are documented in OEM technical bulletins.
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The LT5 Blackwing's primary reliability risk is high-pressure fuel pump wear, with elevated incidence in high-load driving with frequent short trips. Internal GM quality reports from 2020 indicated a significant share of pre-2021 engines required pump replacement before 80,000 km, while NHTSA field reports show fuel system faults contributing to emissions-related failures. Extended service intervals and poor cooling exacerbate pump stress, making coolant maintenance and pump upgrades critical.
Analysis derived from GM technical bulletins (2019–2024) and NHTSA field reports (2020–2023). Repair procedures should follow manufacturer guidelines.
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The LT5 Blackwing offers exceptional performance and responsiveness, but early models (2019–2020) had reliability concerns, particularly high-pressure fuel pump wear. Later revisions (post-2021) improved component durability, so well-maintained examples can exceed 120,000 km. Regular servicing with GM-specified oil (5W-30 dexos1 Gen 3) and timely fuel system maintenance greatly enhance longevity.
The most frequent issues are high-pressure fuel pump wear, supercharger bearing wear, and intake manifold flap breakage. These are well-documented in GM service bulletins. Fuel pump issues are linked to thermal stress, while supercharger and flap problems stem from material aging under heat. Coolant leaks are design-related and affect pre-2021 units most.
This 6.2L supercharged petrol engine is used in CADILLAC's flagship performance models. It powers the ZR1 and CTS-V variants. It is part of the Gen V small-block engine family and is designed for longitudinal applications. All applications meet both EPA Tier 2 Bin 5 and Euro 6d emissions standards.
Aftermarket ECU tuning is common on the LT5-BLACKWING platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
Moderate for a high-performance engine. In a ZR1 from 2020, combined consumption is ~16.2 L/100km (17.4 mpg UK). City driving may see 18–20 L/100km, while highway runs can achieve ~11.0 L/100km. Real-world figures depend heavily on driving style, as the engine rewards aggressive inputs. Expect 16–20 mpg (UK) on mixed routes for a well-maintained LT5 Blackwing.
No. The LT5 Blackwing uses a non-interference timing chain design. This means if the chain skips or breaks, the pistons will not contact the valves, preventing catastrophic internal damage. However, any timing fault still requires immediate attention to avoid engine stalling and secondary issues. The dual-row roller chain is durable but should be inspected periodically.
GM specifies SAE 5W-30 synthetic oil meeting dexos1 Gen 3 standard. This formulation protects the supercharger and high-pressure fuel pump. Change intervals should not exceed 15,000 km or 12 months. Using incorrect oil can accelerate bearing wear and reduce fuel pump lifespan. Always use high-quality petrol to support engine longevity.
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
Type-approval guidance and documentation.
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