The Chevrolet Performance LS3 6.2L (376 cubic inch) crate engine is rated at 430 HP and 425 lb-ft of torque. It uses the production LS3 hydraulic roller camshaft, aluminum LS3 rectangular-port cylinder heads and a 10.7:1 compression ratio. It ships as a complete engine with the intake manifold, throttle body, fuel injectors, water pump, harmonic balancer and oil pan. The engine controller kit, exhaust manifolds and flexplate are sold separately.
Specifications:
- Displacement: 376 cu in (6.2L)
- Horsepower: 430 HP at 5900 rpm
- Torque: 425 lb-ft at 4600 rpm
- Compression ratio: 10.7:1
- Bore x stroke: 4.065 in x 3.622 in
- Camshaft: Production LS3 hydraulic roller, 0.551 in / 0.522 in lift, 204 / 211 degrees at 0.050 in
- Cylinder heads: Aluminum LS3 rectangular port (L92 design)
- Reluctor: 58X
- Included: Intake manifold, throttle body, fuel injectors, water pump, harmonic balancer, oil pan
- Not included: Engine controller kit, exhaust manifolds, flexplate
- Engine family: GM LS-Series (LS3)
- Quantity: Each
- Part number: 19540155
Applications:
- GM LS-Series performance and swap builds (universal crate engine)
FAQ
How much power does it make?
430 HP and 425 lb-ft of torque.
Is it a complete engine?
Yes, it includes the intake manifold, throttle body, fuel injectors, water pump, harmonic balancer and oil pan.
What is not included?
The engine controller kit, exhaust manifolds and flexplate are sold separately.
What is the bore and stroke?
4.065 in bore and 3.622 in stroke.
What camshaft does it use?
The production LS3 hydraulic roller camshaft.

