LS3 Crate Engines: Specs, Pricing & Install Tips (2025 Guide)
Modern muscle in a classic package — the LS3 is the most popular LS crate engine for a reason.
🔧 Introduction
If you’re looking for a powerful, reliable, and budget-friendly LS crate engine, the LS3 is a top-tier choice. With 430+ horsepower straight out of the box and tons of aftermarket support, it’s the perfect match for classic muscle builds, restomods, and street performance upgrades.
In this guide, we’ll cover:
✅ Full LS3 specs
✅ Pricing and turn-key package options
✅ Ideal vehicle applications
✅ Installation tips for LS3 swaps
✅ Internal links to help you learn more or shop
🔍 Want to compare LS3 vs LS7? Check out our in-depth guide here
LS3 Crate Engine Overview
The LS3 debuted in the 2008 C6 Corvette and quickly became a fan-favorite for engine swaps. It features high-flow rectangular port heads, a hot cam, and a lightweight aluminum block.
LS3 Crate Engine Specs
| Specification | Value |
|---|---|
| Displacement | 6.2L (376 cu in) |
| Horsepower | 430–525 hp (varies by cam/tune) |
| Torque | 425–486 lb-ft |
| Compression Ratio | 10.7:1 |
| Block Material | Aluminum |
| Cylinder Heads | Rectangular Port |
| Valvetrain | Hydraulic Roller |
| Firing Order | 1-8-7-2-6-5-4-3 |
| Redline | ~6,600 RPM |
| Weight | ~415 lbs (dry) |
LS3 Crate Engine Pricing (2025)
| Package Type | What’s Included | Price Range |
|---|---|---|
| Base Long Block | Block, crank, pistons, heads | $6,300–$7,500 |
| Dressed Engine | Above + intake, coil packs, oil pan | $7,800–$8,900 |
| Turn-Key Kit | Dressed + ECU, wiring harness, sensors | $8,900–$10,500 |
| With Transmission | Turn-key + T56 or 4L65E | $11,000–$14,000 |
Best Vehicles for LS3 Engine Swaps
| Vehicle | Notes |
|---|---|
| 1967–1981 Camaro | Direct-fit kits available |
| C10 Trucks (’60s–’80s) | Perfect torque match |
| Chevelle / Nova / El Camino | Classic muscle favorites |
| Miata / 240SX / BMW E36 | Compact LS swap potential |
| Jeep / Off-Road Rigs | Rugged power with modern reliability |
Check Out Our Guide: How to Install a Crate Engine
LS3 Installation Tips
- Get a Swap Kit: Use LS swap motor mounts, headers, and oil pans for your specific chassis.
- Wiring & ECU: Use a standalone GM ECU or aftermarket system like Holley Terminator X.
- Fuel System: Ensure adequate fuel pressure (58 psi) and use LS-style returnless setups.
- Cooling System: Use a high-flow radiator and dual electric fans.
- Transmission Matching: LS3 pairs well with T56 manual, 4L65E or 4L80E automatics.
Related: Crate Engine Maintenance Tips for Longevity
✅ Pros & Cons of the LS3 Crate Engine
| Pros | Cons |
|---|---|
| ✅ Great balance of power and price | ❌ Not as exotic as LS7 or LT engines |
| ✅ Huge aftermarket support | ❌ May require custom wiring for older cars |
| ✅ Proven reliability and performance | ❌ Limited power ceiling for forced induction |
Global Shipping Options
We ship LS3 crate engines worldwide, including:
- 🇨🇦 Canada
- 🇦🇺 Australia
- 🇬🇧 UK
- 🇳🇿 New Zealand
- 🇺🇸 United States
💬 Frequently Asked Questions
❓Is the LS3 crate engine good for daily driving?
Absolutely. It’s known for being smooth, fuel-efficient (for a V8), and low-maintenance.
❓Can I boost an LS3?
Yes — though it’s best to forge the internals or start with a boost-ready engine like the LSX376-B15 for more than 7 psi.
❓How long does an LS3 crate engine last?
With proper maintenance, 150,000+ miles is common — especially with synthetic oil and cooling upgrades.
🔗 More Helpful Resources
- LS Crate Engines: Everything You Need to Know
- LS3 vs LS7 Comparison
- Best Crate Engines for Classic Restorations
- Where to Buy the Best LS Crate Engines
🏁 Conclusion
The LS3 crate engine delivers exceptional performance, reliability, and value — making it one of the most popular choices in the LS family. Whether you’re building a street rod, a restomod, or a weekend cruiser, the LS3 offers an unbeatable foundation with modern power.
🚀 Ready to build? Shop LS3 Crate Engines Now