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LS3 6.2 Engine for Sale – Your Ultimate Buyer’s Guide (2025 Edition)
Are you searching for a high-performance LS3 6.2 engine for sale? Whether you’re upgrading your muscle car, restoring a classic, or building a custom street machine, the LS3 engine is a go-to choice among enthusiasts for its raw power, modern efficiency, and broad availability. In this comprehensive guide, we’ll explore everything you need to know about the LS3 6.2L engine, including specs, pricing, where to buy, compatibility, performance upgrades, and FAQs.
Table of Contents
- What is the LS3 6.2 Engine?
- LS3 Engine Specs and Performance
- Benefits of the LS3 6.2 Engine
- Common Vehicles with the LS3 Engine
- LS3 vs Other LS Engines
- New, Used, and Crate LS3 Engines for Sale
- Where to Find LS3 Engines for Sale
- LS3 Engine Swap Guide
- Popular LS3 Performance Upgrades
- Cost of LS3 Engines in 2025
- Tips for Buying a Used LS3 Engine
- Frequently Asked Questions (FAQs)
What is the LS3 6.2 Engine?
The LS3 6.2L V8 engine is a high-performance small-block engine from General Motors’ legendary LS engine family. Originally launched in the 2008 Chevrolet Corvette, the LS3 has become a favorite for engine swaps, crate builds, and high-horsepower street and track vehicles.
- Displacement: 6.2 Liters (376 cubic inches)
- Fuel Type: Gasoline
- Configuration: Naturally aspirated V8
- Production Years: 2008–2017
- Power Output: 430–436 hp (stock)
The LS3 was designed for power, efficiency, and adaptability, making it one of the most popular modern V8s for tuners and builders.
LS3 Engine Specs and Performance
| Specification | Details |
|---|---|
| Engine Code | LS3 |
| Displacement | 6.2L (6162 cc) |
| Bore x Stroke | 103.25 mm × 92.0 mm |
| Compression Ratio | 10.7:1 |
| Horsepower | 430 hp @ 5,900 rpm |
| Torque | 424 lb-ft @ 4,600 rpm |
| Valvetrain | OHV, 2 valves per cylinder |
| Fuel Injection | Sequential fuel injection (SFI) |
| Block Material | Cast aluminum |
| Crankshaft | Nodular iron |
| Redline | ~6,600 RPM |
Benefits of the LS3 6.2 Engine
- Reliable Power: One of the most durable GM V8s ever made.
- Wide Availability: Easily found as a crate or used engine.
- Affordable Performance: Great power-to-cost ratio.
- Modular Design: Easy to upgrade and customize.
- Swap-Friendly: Tons of aftermarket support.
Common Vehicles with the LS3 Engine
The LS3 engine has powered some of GM’s most iconic performance vehicles, including:
- Chevrolet Corvette C6 (2008–2013)
- Chevrolet Camaro SS (2010–2015)
- Chevrolet SS Sedan (2014–2017)
- Holden Commodore VE/VF
- Pontiac G8 GXP (2009)
These vehicles showcase the LS3’s ability to provide muscle car performance with modern drivability.
LS3 vs Other LS Engines
| Engine | Displacement | HP (stock) | Used In |
|---|---|---|---|
| LS1 | 5.7L | 345 hp | Corvette C5, Camaro SS |
| LS2 | 6.0L | 400 hp | Corvette C6, GTO |
| LS3 | 6.2L | 430 hp | Corvette C6, Camaro SS |
| LS6 | 5.7L | 405 hp | Corvette Z06 (C5) |
| LS7 | 7.0L | 505 hp | Corvette Z06 (C6) |
| LS9 | 6.2L SC | 638 hp | Corvette ZR1 (C6) |
The LS3 balances performance and affordability, unlike the costlier LS7 or LS9.
New, Used, and Crate LS3 Engines for Sale
When shopping for an LS3 engine, you’ll typically find three options:
1. New Crate Engines
- From GM Performance Parts
- Factory-warrantied
- Price: $8,000 – $12,000
- Ideal for fresh builds
2. Used LS3 Engines
- Pulled from salvage or donor cars
- Mileage varies (20,000–100,000+)
- Price: $3,000 – $7,000
- Budget-friendly option
3. Rebuilt LS3 Engines
- Refurbished with new components
- Warranty sometimes available
- Price: $4,500 – $8,500
Where to Find LS3 Engines for Sale
Here are trusted online and offline sources to buy an LS3 engine:
| Source | Website / Contact |
|---|---|
| Chevrolet Performance | chevrolet.com |
| JEGS Performance | jegs.com |
| Summit Racing Equipment | summitracing.com |
| eBay Motors | ebay.com |
| Facebook Marketplace | App / Website |
| Local Junkyards / Salvage | Via car-part.com or local directories |
| Engines Direct | enginesdirect.com |
| Texas Speed & Performance | texas-speed.com |
LS3 Engine Swap Guide
Swapping an LS3 into a project car? Here’s what you need:
Required Components
- LS3 engine (with harness and ECM)
- LS3 swap motor mounts
- Transmission (T56 or 4L70E often preferred)
- Radiator & cooling system
- Exhaust headers and downpipes
- Driveshaft (custom-length in many swaps)
- Fuel system upgrades
- Wiring harness (standalone or modified OEM)
Common Swap Platforms
- Classic Muscle Cars: Chevelle, Nova, Camaro
- Trucks: Silverado, C10, S10
- Imports: 240SX, RX7, BMW E36/E46
- Jeeps and SUVs: Off-road builds
Popular LS3 Performance Upgrades
Maximize your LS3’s potential with these upgrades:
| Upgrade Type | Examples |
|---|---|
| Camshaft | BTR Stage 3 or Texas Speed cams |
| Cylinder Heads | CNC Ported LS3 heads |
| Intake Manifold | FAST 102mm intake |
| Throttle Body | 92mm or 102mm units |
| Forced Induction | Turbo kits or ProCharger systems |
| ECU Tuning | HP Tuners or EFI Live |
| Exhaust | Long-tube headers, high-flow cats |
Cost of LS3 Engines in 2025
| Engine Type | Price Range (USD) |
|---|---|
| Brand-New Crate | $8,000 – $12,000 |
| Used LS3 | $3,000 – $7,000 |
| Rebuilt LS3 | $4,500 – $8,500 |
| Complete Swap Kit | $10,000 – $15,000 |
Prices vary depending on mileage, location, seller, and included accessories.
Tips for Buying a Used LS3 Engine
- Check VIN Codes: Ensure it’s a genuine LS3.
- Inspect for Damage: Look for leaks, wear, or cracks.
- Ask for Compression Test: Confirms engine health.
- Mileage Matters: Lower mileage = better longevity.
- Buy from Reputable Sellers: Avoid unknown junkyards.
- Request Warranty if Possible: Even short-term protection is helpful.
- Bundle Transmission: Get engine + trans as a package deal.
Frequently Asked Questions (FAQs)
What makes the LS3 engine so popular?
The LS3 is favored for its balance of power, reliability, and cost. It offers excellent performance in stock form and responds very well to mods. It’s also one of the most swap-friendly engines due to its size and aftermarket support.
🛒 Where is the best place to buy an LS3 6.2 engine?
Some of the best places include:
- Summit Racing
- Chevrolet Performance
- JEGS
- Engines Direct
- eBay Motors (with caution)
Always verify the engine’s condition and seller reputation before purchasing.
⚙️ Is the LS3 engine a good choice for an engine swap?
Absolutely. The LS3 fits well in a variety of vehicles and has a massive aftermarket support base. It’s ideal for street, drag, autocross, and even daily driver builds.
🔧 What transmission is best for the LS3 engine?
Popular choices include:
- Tremec T56 Magnum (manual)
- TR6060 (manual)
- 4L70E (auto)
- 6L80E (auto)
💸 How much should I expect to pay for a complete LS3 swap?
You should budget around $12,000–$18,000 for a full swap, including engine, transmission, ECU, harness, cooling, fuel system, exhaust, and labor if you’re not DIY-ing.
🧪 Can I supercharge or turbocharge the LS3?
Yes! The LS3 can safely handle moderate boost (~6–8 psi) in stock form, and with forged internals or upgraded cams, it can exceed 700+ horsepower reliably.
🕒 How long will an LS3 engine last?
With proper maintenance, LS3 engines can last 200,000 miles or more, especially if kept naturally aspirated and tuned correctly.
🆚 LS3 vs LS7: Which is better?
- LS3 is more affordable, easier to maintain, and still powerful.
- LS7 offers more power (505 hp), but is more expensive and harder to source.
📌 Conclusion: Should You Buy an LS3 6.2 Engine in 2025?
If you’re looking for modern V8 power, reliability, and affordability, the LS3 6.2L engine is one of the best choices available in 2025. Whether you’re doing an engine swap, building a hot rod, or just want more horsepower, the LS3 offers a combination of brute force and refined engineering that’s hard to beat.
From used motors to new crate engines, there are plenty of LS3 engines for sale — just make sure you buy from a trusted source, verify the VIN and specs, and know your build goals.
