LS Crate Engines: Everything You Need to Know
Ls Engines
The modern muscle behind thousands of performance builds.
Introduction
LS crate engines have become the gold standard in performance engine swaps. From classic hot rods and restomods to off-road rigs and daily street beasts, the GM LS engine family offers an unbeatable mix of power, weight, reliability, and affordability.
In this complete guide, you’ll learn:
✅ What makes LS engines so popular
✅ The best LS crate engine options for your build
✅ How to choose between LS3, LS7, LSA, and more
✅ Installation tips, tuning advice, and pricing
✅ Where to buy the best LS crate engines
What Is an LS Crate Engine?
An LS crate engine is a pre-assembled version of GM’s LS V8 engine, sold in a shipping crate and ready for installation. These engines are available in various configurations — from base long blocks to turn-key kits — and are popular for engine swaps, performance upgrades, and resto-mods.
Why LS Engines Are So Popular
| Feature | Benefit |
|---|---|
| ✅ Lightweight | Aluminum block = better power-to-weight ratio |
| ✅ Compact | Fits easily in tight engine bays |
| ✅ Aftermarket Support | Thousands of parts & tuning options |
| ✅ Versatility | Can be dropped into almost any RWD vehicle |
| ✅ Reliability | Proven street and race performance for decades |
💡 New to crate motors? Start with What Is a Crate Engine?
Top LS Crate Engines for Sale in 2025
| Engine | HP/Torque | Best For | Price Range |
|---|---|---|---|
| LS3 | 430–525 hp / 425 lb-ft | Street builds, restomods | $6,500–$9,000 |
| LSA (Supercharged) | 556 hp / 551 lb-ft | High-performance, boosted builds | $11,000–$14,000 |
| LS7 | 505 hp / 470 lb-ft | Track cars, elite restomods | $13,000–$17,000 |
| LSX376-B15 | 473 hp (boost-ready) | Forced induction setups | $8,500–$11,500 |
| LT4 (Gen V) | 650 hp / 650 lb-ft | Late model swaps, pro builds | $14,000–$18,000 |
LS3 vs LS7: Quick Comparison
| Feature | LS3 | LS7 |
|---|---|---|
| Displacement | 6.2L | 7.0L |
| HP | 430–525 | 505–570 |
| Valvetrain | Hydraulic roller | Titanium valves |
| Best For | Street/strip | Track/race builds |
| Cost | Lower | Higher |
📘 Full guide: LS3 vs LS7: Which Is Right for You?
LS Crate Engine Turn-Key vs Base: What’s the Difference?
| Type | Includes | Best For |
|---|---|---|
| Long Block | Block, crank, pistons, cam, heads | Budget builds, DIY setups |
| Dressed | Above + intake, front accessories | Intermediate installs |
| Turn-Key | All of the above + ECU, wiring, sensors | Plug-and-play installs |
🔧 Shop Turn-Key LS Crate Engines
LS Crate Engine Shipping Worldwide
We ship LS engines to:
- 🇺🇸 USA
- 🇨🇦 Canada
- 🇬🇧 UK
- 🇦🇺 Australia
- 🇳🇿 New Zealand
🌐 Learn more about Crate Engine Shipping & Delivery
FAQs: LS Crate Engines
❓What vehicles can use an LS crate engine?
LS engines can be installed into almost any rear-wheel-drive vehicle, including Camaros, C10s, Miatas, Mustangs (with adapter kits), 240SXs, and even boats.
❓What’s the most affordable LS engine?
The LS3 crate engine offers the best power-to-price ratio, starting around $6,500 for a base model.
❓Can I run boost on a stock LS?
Yes — especially with engines like the LSX376-B15, which is built for forced induction.
Installation Tips
- Use LS swap kits for easy mount and header fitment
- Get a standalone ECU or OEM GM controller package
- Upgrade cooling systems to handle higher temps
- Be sure your transmission and driveline match the power output
📘 Read: How to Install a Crate Engine: Step-by-Step Guide
Maintenance & Break-In Tips
- Change oil after first 500 miles
- Use high-zinc oil for break-in
- Avoid full throttle or high load during break-in
- Check all fluids and torque specs regularly
📗 Crate Engine Maintenance Tips for Longevity
Related Blog Posts to Build Authority
- LS3 vs LS7: Which Is Right for You?
- Turn-Key vs Long Block: What Should You Buy?
- Best LS Crate Engines for Classic Car Restorations
- LS vs LT Engines: What’s the Difference?
- Top LS Crate Engines Under $10,000
🏁 Conclusion
Whether you’re building a classic street rod or a modern track monster, LS crate engines deliver the perfect balance of power, reliability, and ease of installation. With support for everything from basic 430 hp builds to 1,000+ hp monsters, the LS family continues to define the crate engine market.
🚀 Ready to upgrade? Shop LS Crate Engines at X Factors Motorsports
