In Stock
Inspected & Documented
Condition notes recorded before palletizing.
30-Day Startup Warranty
Covers block, heads and internal moving components.
In Stock & Ready to Freight
Crate Engines
Chevrolet Performance LS 376/515 LS3 Long Block Crate Engines 19370412
$4,497.04
+ $295.00 flat-rate insured LTL freight
(details)
$4,792.04 delivered to the continental US
- Palletized and heavy shrink-wrapped for freight
- LTL carrier delivery with optional liftgate service
- Ships in 1–2 business days from Los Angeles, CA
- Transit typically 3–7 business days, continental US
Secure checkout by Stripe
Need a matched transmission, controls or wiring package? Speak with a parts specialist.
Details & Inspection Notes
Chevrolet Performance LS 376/515 LS3 Long Block Crate Engine (19370412), High-Revving Powerhouse!
Unleash extreme power with the Chevrolet Performance LS 376/515 LS3 Long Block Crate Engine!
The Chevrolet Performance LS 376/515 LS3 Long Block Crate Engine (19370412) is a performance-focused version of the LS3, featuring an aggressive camshaft that increases output to 515 HP and 483 lb-ft of torque. The carbureted intake manifold setup makes it an excellent choice for classic muscle cars and custom builds, allowing for a simplified fuel system while retaining modern LS power.
Big horsepower in a lightweight LS package!
Requires a compatible carburetor, ignition system, and fuel system for full operation.
What’s Included in the LS 376/515 Crate Engine?
Aluminum Engine Block & HeadsProvides maximum strength and lightweight performance
Aggressive Hydraulic Roller CamshaftFeatures high lift and duration for maximum horsepower
Performance-Optimized Cylinder HeadsDesigned for high airflow and combustion efficiency
Carbureted Intake ManifoldAllows for easy integration with classic and performance builds
Harmonic BalancerEnsures smooth engine operation
Water Pump & Timing CoverProvides efficient cooling and proper camshaft timing
Oil Pan & Valve CoversProtects internal components and enhances durability
Spark Plugs IncludedOptimized for high-performance ignition and combustion efficiency
EXCLUDES carburetor, throttle body, distributor, ignition components, flywheel, flexplate, computer, and wiring harness.
Technical Specifications
| Feature | Details |
|---|---|
| Brand | Chevrolet Performance |
| Manufacturer’s Part # | 19370412 |
| Product Type | Crate Engine |
| Summit Racing Part # | NAL-19370412 |
| Crate Engine Family | Chevy LS |
| Actual Displacement | 6.2L / 376 cubic inches |
| Assembled? | Yes |
| Engine Block Material | Aluminum |
| Cylinder Head Material | Aluminum |
| Advertised Compression Ratio | 10.7:1 |
| Engine Balance | Internal |
| Camshaft Type | Hydraulic Roller |
| Rear Main Seal Style | 1-Piece |
| Intake Manifold Included? | Yes (Carbureted) |
| Carburetor Included? | No |
| Throttle Body Included? | No |
| Distributor Included? | No |
| Oil Pan Included? | Yes |
| Valve Covers Included? | Yes |
| Timing Cover Included? | Yes |
| Water Pump Included? | Yes |
| Harmonic Balancer Included? | Yes |
| Flexplate Included? | No |
| Flywheel Included? | No |
| Air Cleaner Included? | No |
| Spark Plugs Included? | Yes |
| Spark Plug Wires Included? | No |
| Computer Included? | No |
| Wiring Harness Included? | No |
| Supercharger Included? | No |
| Quantity | Sold Individually |
Built for high RPMs, track performance, and aggressive driving!
Fitment & Compatibility
Perfect for high-performance street builds, drag racing, and pro-touring applications
Designed for seamless integration with carbureted fuel systems
Ideal for classic Chevy muscle cars, hot rods, and high-horsepower builds
Ensure your fuel system, ignition, and drivetrain components are compatible before ordering!
Installation Notes & Recommendations
Professional Installation RecommendedEnsures correct fitment, tuning, and performance
Requires a Compatible Carburetor & Ignition SystemNot included with the crate engine
Requires Premium Fuel (91 Octane or Higher)Designed for high-performance applications
Not emissions-certified, intended for off-road or racing applications.
Frequently Asked Questions (FAQ)
What is the horsepower and torque output of this engine?
- The LS 376/515 produces 515 HP at 6,600 RPM and 483 lb-ft of torque at 5,200 RPM.
What’s different between this LS3 and a standard LS3?
- This version of the LS3 features a more aggressive camshaft, increasing horsepower from 430 HP to 515 HP, making it ideal for high-RPM power and performance applications.
Does it come with an intake manifold and fuel system?
- Yes, it includes a carbureted intake manifold but does NOT include a carburetor or throttle body. These must be purchased separately.
Can I install this engine in a classic Chevy muscle car?
- Yes! This Chevy LS 376/515 is an ideal upgrade for classic Camaro, Corvette, Chevelle, Nova, and other high-performance builds.
Does this engine require a specific fuel type?
- Yes, it requires premium fuel (91 octane or higher) due to its 10.7:1 compression ratio.
Order Your Chevrolet Performance LS 376/515 LS3 Long Block Crate Engine Today!
Upgrade your classic Chevy or performance build with the high-revving power of the Chevrolet Performance LS 376/515 LS3 Long Block Crate Engine!
515 HP & 483 lb-ft of Torque for Extreme Performance
Complete Long Block Assembly with Aggressive Camshaft
Ideal for Classic Chevy Restorations, Race Cars, and Custom Builds
Built for Maximum Power, Durability, and High-RPM Performance
ORDER NOW & UNLEASH THE FULL POTENTIAL OF LS POWER!
Brand: Chevrolet Performance
Manufacturer’s Part Number: 19370412
Part Type: Crate Engines
Product Line: Chevrolet Performance LS 376/515 LS3 Long Block Crate Engines
Summit Racing Part Number: NAL-19370412
Crate Engine Family: Chevy LS
Actual Engine Displacement: 6.2L/376
Crate Engine Cylinder Head Material: Aluminum
Engine Block Material: Aluminum
Advertised Compression Ratio: 10.7:1
Assembled: Yes
Engine Balance: Internal
Cam Style: Hydraulic roller, OE roller
Rear Main Seal Style: 1-piece
Intake Manifold Included: Yes
Intake Manifold Style: Carbureted
Cylinder Heads Included: Yes
Carburetor Included: No
Throttle Body Included: No
Distributor Included: No
Oil Pan Included: Yes
Valve Covers Included: Yes
Timing Cover Included: Yes
Water Pump Included: Yes
Harmonic Balancer Included: Yes
Flexplate Included: No
Flywheel Included: No
Air Cleaner Included: No
Spark Plugs Included: Yes
Spark Plug Wires Included: No
Computer Included: No
Wiring Harness Included: No
Supercharger Included: No
Quantity: Sold individually.
Startup & Installation Checklist
- Replace timing components, water pump and plugs before initial startup where applicable.
- Refill all fluids with manufacturer-specified oil and coolant.
- Verify sensors, ECU pinouts and grounds against your chassis or hull wiring.
- Startup warranty covers heads, block and internal lubricated components for 30 days from delivery.
Full terms: 30-day startup warranty · returns
