The LT5 engine is a high-performance 6.2L supercharged V8 developed by General Motors and used in the legendary Chevrolet Corvette ZR1 (C7 generation). It is the most powerful production Corvette engine ever built, designed for extreme horsepower, track performance, and high-speed stability.
With advanced supercharging, dual fuel injection, and a dry-sump oiling system, the LT5 represents the peak of GM’s small-block V8 performance engineering.
LT5 Engine Overview
The LT5 is part of GM’s advanced Gen V small-block engine family and was introduced in the 2019 Corvette ZR1. It builds on the LT4 architecture but adds a larger supercharger, improved airflow system, and dual-fuel injection technology for maximum performance.
It is designed for extreme horsepower output while maintaining reliability under track-level stress, making it one of the most advanced pushrod V8 engines ever produced.
Engine Specifications
Key technical specifications of the LT5 engine are shown below:
Performance Highlights
- 0–60 mph: ~2.8–3.0 seconds (Corvette ZR1)
- Top Speed: ~210+ mph
- Boost Pressure: ~13–14 psi
- Redline: ~6,600 RPM
- Best Use: High-performance sports car / track driving
The LT5 delivers massive low-end torque, allowing the Corvette ZR1 to achieve supercar-level acceleration with instant throttle response.
Oil Type & Maintenance
- Recommended Oil: SAE 5W-30 full synthetic (Dexos2 approved)
- Oil System: Dry sump with high-capacity reservoir
- Oil Capacity: ~7–9 quarts (varies by system setup)
- Oil Change Interval: 5,000–7,500 miles (street use)
Because the LT5 uses a dry-sump system, maintaining correct oil levels is critical for engine protection during high-speed cornering and track driving.
Applications
- 2019 Chevrolet Corvette ZR1 (C7 generation)
- High-performance GM crate engine programs
- Track-focused automotive engineering platforms
Frequently Asked Questions
What is the horsepower of the LT5 engine?
The LT5 produces 755 horsepower in the Corvette ZR1.
Is the LT5 a supercharged engine?
Yes, it uses a 2.65L Eaton supercharger for high boost performance.
What car uses the LT5 engine?
The LT5 is used exclusively in the Chevrolet Corvette ZR1 (C7).
Is LT5 better than LT4?
Yes, the LT5 is more powerful due to a larger supercharger and dual fuel injection system.
Is the LT5 reliable?
Yes, it is considered highly durable when properly maintained, even under extreme performance use.
Final Thoughts
The LT5 engine represents the peak of GM’s supercharged V8 engineering, delivering extreme horsepower, advanced cooling, and track-ready durability. It remains one of the most iconic modern American performance engines ever built.