2025 Corvette ZR1 Horsepower: 1,064-hp LT7 Specifications
2025 Corvette ZR1 Horsepower: 1,064-hp LT7 Specifications with application chart, generation boundaries, verification steps and official manufacturer lookup.
Chevrolet rates the 2025 Corvette ZR1's 5.5L twin-turbo LT7 at 1,064 hp at 7,000 rpm and 828 lb-ft at 6,000 rpm under SAE guidelines.
Chevrolet rates the 2025 Corvette ZR1's 5.5L twin-turbo LT7 at 1,064 hp at 7,000 rpm and 828 lb-ft at 6,000 rpm under SAE guidelines.
This exact specification applies to the 2025 C8 ZR1 coupe and convertible. It is engine output, unlike a hybrid combined-system figure, and it must not be transferred to the naturally aspirated Z06 LT6, Stingray LT2, E-Ray or the later ZR1X hybrid.
The LT7 uses a flat-plane crank, dual overhead cams, twin turbochargers, port plus direct injection and dry-sump lubrication. The familiar Z06 LT6 shares displacement and basic architecture but is naturally aspirated and rated separately; the engine code, forced-induction system and firing order are not interchangeable service details.
Interactive 2025 Corvette ZR1 specification guide
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Chevy Corvette Horsepower Specs By Year
| APPLICATION / ITEM | SPECIFICATION | NOTES |
|---|---|---|
| 2025 ZR1 horsepower | 1,064 hp | At 7,000 rpm; SAE |
| Peak torque | 828 lb-ft | At 6,000 rpm |
| Engine | LT7 5.5L twin-turbo V8 | Flat-plane crank, DOHC |
| Firing order | 1-4-3-8-7-6-5-2 | LT7 factory specification |
| Oil system | Seven-stage dry sump | 8-qt published capacity |
| Z06 comparison | 670 hp LT6 | Naturally aspirated separate engine |
The LT7 uses a flat-plane crank, dual overhead cams, twin turbochargers, port plus direct injection and dry-sump lubrication. The familiar Z06 LT6 shares displacement and basic architecture but is naturally aspirated and rated separately; the engine code, forced-induction system and firing order are not interchangeable service details.
What makes the LT7 a separate Corvette engine
The LT7 is not a turbo kit added to the Z06's LT6. Chevrolet specifies twin turbochargers, port plus direct fuel injection, unique calibration and a 9.8:1 compression ratio around its 5.5L flat-plane architecture.
Its 1,064-hp rating is achieved at 7,000 rpm under SAE guidelines. The Z06's naturally aspirated 670-hp LT6, Stingray LT2 and hybrid E-Ray combination require their own rows and service information.
Horsepower does not describe the whole configuration
Chevrolet offers standard and high-downforce ZTK aerodynamic arrangements without changing the published engine rating. Downforce, tires, suspension and gearing affect track behavior even when the engine number remains 1,064 hp.
Keep later ZR1X references separate: its combined hybrid output includes a front-axle electric motor. That is not a retroactive rating for the 2025 rear-drive ZR1 described here.
Application boundaries for 2025 Corvette ZR1
This exact specification applies to the 2025 C8 ZR1 coupe and convertible. It is engine output, unlike a hybrid combined-system figure, and it must not be transferred to the naturally aspirated Z06 LT6, Stingray LT2, E-Ray or the later ZR1X hybrid.
The LT7 uses a flat-plane crank, dual overhead cams, twin turbochargers, port plus direct injection and dry-sump lubrication. The familiar Z06 LT6 shares displacement and basic architecture but is naturally aspirated and rated separately; the engine code, forced-induction system and firing order are not interchangeable service details.
Chevrolet 2025 Corvette ZR1 specifications can change by model year, engine, platform, wheel, and installed component. Confirm the VIN or engine identity, part numbers, fastener condition, and the current manufacturer instructions before service.
Procedures used with this specification
These steps are the same for every vehicle in this family, so they are documented once rather than repeated on each page. The values above remain specific to this Chevrolet 2025 Corvette ZR1.
2025 Corvette ZR1 Horsepower: 1,064-hp LT7 Specifications FAQs
How much horsepower does the 2025 Corvette ZR1 make?+
Chevrolet specifies 1,064 hp at 7,000 rpm under SAE guidelines.
What is the 2025 ZR1 torque rating?+
The twin-turbo LT7 produces 828 lb-ft at 6,000 rpm.
Is the LT7 the same engine as the Z06 LT6?+
No. Both are 5.5L flat-plane DOHC V8s, but the LT7 is a distinct twin-turbo engine with different induction and fueling.
Does the ZTK package increase engine horsepower?+
No. It changes aerodynamic, tire and suspension equipment while the published engine rating remains 1,064 hp.
Technical sources
TorqueSheet favors engine- and component-specific manufacturer instructions over unsourced universal values.
12025 Chevrolet Corvette ZR1 specificationsPrimary Chevrolet technical release specifying the 5.5L twin-turbo LT7 at 1,064 hp and 828 lb-ft, including rated engine speeds.↗2GM manuals and guidesOfficial Chevrolet model-year/VIN manual lookup.↗