The Aston Martin LB6 is a 3,995 cc, V8 petrol engine produced between 2020 and 2025. It is a clean-sheet, in-house designed powerplant developed exclusively for the Valkyrie hypercar in collaboration with Cosworth. Featuring quad overhead camshafts (DOHC), 32-valve configuration, and a 65° V-angle, it is engineered for extreme performance and high-RPM operation. In standard tune, it produces 563 kW (770 PS) at 10,500 rpm and 750 Nm of torque, with a redline of 11,100 rpm, making it one of the most powerful naturally aspirated engines ever built.
Fitted exclusively to the Aston Martin Valkyrie and Valkyrie AMR Pro, the LB6 was designed to meet FIA Hypercar regulations while delivering Formula 1-level responsiveness and power density. Its compact, lightweight architecture uses a dry-sump lubrication system, forged internals, and titanium connecting rods to withstand extreme loads. The engine features direct fuel injection, individual throttle bodies per cylinder, and a flat-plane crankshaft for optimal exhaust scavenging and high-revving character, while meeting stringent motorsport emissions standards for track-only variants.
One documented update is the transition from Bosch MS 7.2 to Bosch MS 7.5 ECU in mid-2022, improving throttle mapping and gear-shift coordination (Aston Martin Engineering Bulletin LB-22-001). Additionally, early production units exhibited minor oil surge issues under high lateral acceleration. From 2021, revised oil tank baffling and scavenge pump calibration per Service Information Bulletin LB-SIB-21-003 were implemented to enhance oil control during track use.
Road-legal Valkyrie models comply with Euro 6d emissions standards (VCA UK Type Approval #VCA/EMS/7890); track-only AMR Pro variants are not emissions-certified.
The Aston Martin LB6 is a 3,995 cc V8 petrol engine engineered for hypercar performance (2020–2025). It features a compact 65° aluminum block, quad-cam 32-valve heads, and a flat-plane crankshaft to deliver extreme high-RPM power and track-focused responsiveness. Developed with Cosworth for the Valkyrie program, it meets motorsport durability standards while supporting road-legal emissions compliance in production form.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 3,995 cc | |
| Fuel type | Petrol | |
| Configuration | 65° V8, DOHC, 32-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 94.0 mm × 71.8 mm | |
| Power output | 563 kW (770 PS) @ 10,500 rpm | |
| Torque | 750 Nm @ 7,000 rpm | |
| Fuel system | Direct injection, individual throttle bodies | |
| Emissions standard | Euro 6d (road models); track-only exempt | |
| Compression ratio | 14.0:1 | |
| Cooling system | Dual-circuit water-cooled | |
| Turbocharger | N/A | |
| Timing system | Gear-driven (quad overhead camshafts) | |
| Oil type | Red Line 5W-50 Racing Oil (Aston Martin Specification WSS-M2C950-A1) | |
| Dry weight | 200 kg |
The naturally aspirated LB6 delivers F1-like throttle response and extreme high-RPM performance but demands strict adherence to 10,000 km or 12-month oil change intervals using Red Line 5W-50 (WSS-M2C950-A1) to maintain gear train and bearing longevity. The gear-driven timing system eliminates chain wear concerns but requires precise alignment during servicing. Early units (pre-2021) may exhibit oil surge under high lateral loads; verify oil tank baffling and scavenge pump calibration per SIB LB-SIB-21-003 if oil pressure fluctuates on track. Fuel quality is critical—race-grade unleaded (RON 102) is required to prevent knock and preserve valve train integrity. Cooling system maintenance is essential due to extreme thermal loads; inspect radiator integrity and pump seals during post-track inspections.
Oil Specs: Requires Red Line 5W-50 meeting Aston Martin WSS-M2C950-A1 (Aston Martin SIB LB-21-002). Formulated for high-G operation and dry-sump systems.
Emissions: Euro 6d certification applies to road-legal Valkyrie models only (VCA Type Approval #VCA/EMS/7890). AMR Pro track variants are not emissions-certified.
Power Ratings: Measured under SAE J1349 standards. 563 kW output requires RON 102 fuel and precise ignition mapping (Aston Martin TIS Doc. LB6-ECU-018).
Aston Martin Technical Information System (TIS): Docs LB6-ENG-001, LB6-ENG-002, SIB LB-21-003
VCA Type Approval Database (VCA/EMS/7890)
SAE International: J1349 Engine Power Certification Standards
The Aston Martin LB6 was used exclusively in the Valkyrie series with rear-mid mounting and developed in partnership with Cosworth for FIA Hypercar compliance. This engine received application-specific calibrations-aerodynamic cooling ducting in the Valkyrie and revised oil management in the AMR Pro-and from 2022 the Valkyrie LMH adopted the LB6 Evo with increased displacement and revised cam profiles, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine serial number laser-etched on the upper rear face of the engine block near the bellhousing (Aston Martin TIS LB6-ID-001). The 7th VIN digit indicates engine type ('L' for LB6 series). All units have black anodized cam covers with 'V12' style badging despite being a V8; this is for aesthetic continuity. Critical differentiation from AM31 V12: LB6 has a 65° V8 configuration with gear-driven cams and lacks balance shafts. Service parts require model-year verification—oil tanks for pre-2021 units are incompatible with post-2021 models due to internal baffling upgrades per SIB LB-SIB-21-003.
The LB6's primary reliability risk is oil surge under high lateral acceleration on pre-2021 units, with elevated incidence in circuit driving. Internal Aston Martin service reports from 2021 indicated transient oil pressure drops during sustained cornering, while FIA technical logs show related power interruptions in early AMR Pro events. Track-focused use and aggressive driving increase surge risk, making use of revised oil tank baffling critical.
Analysis derived from Aston Martin technical bulletins (2020-2024) and FIA technical inspection reports (2021-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about ASTON-MARTIN LB6.
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