The 4.8 LS engine is a reliable and versatile V8 from General Motors’ renowned LS lineup, celebrated for its balance of power, efficiency, and durability. Commonly found in Silverado, Sierra, and Express models, this engine delivers impressive low-end torque and smooth acceleration, thanks to its strong aluminum or cast-iron block and advanced fuel management systems. Its robust construction and proven longevity make it a dependable performer that stands the test of time.
Features
Tested Engine with Warranty
Hassle-Free Returns Available
Live Customer Support
Direct Fit for Your Vehicle
Description
The 4.8 LS engine is a dependable and high-performing V8 from General Motors’ LS family, renowned for its strength, efficiency, and versatility. With a displacement of 4.8 liters (293 cubic inches), this naturally aspirated engine features a cast-iron or aluminum block paired with aluminum heads, ensuring durability and smooth power delivery. It produces between 255 and 295 horsepower and 285 to 305 lb-ft of torque, supported by a 9.5:1 compression ratio and a sequential fuel injection system.
The engine uses an OHV valvetrain with 16 valves, a bore and stroke of 3.78 x 3.27 inches, and the standard LS firing order of 1-8-7-2-6-5-4-3. Commonly found in GM trucks and SUVs such as the Silverado and Sierra, the 4.8 LS engine offers excellent low-end torque, long-lasting reliability, and strong potential for performance upgrades, making it a top choice for both work and custom build applications.
4.8L LS fitment requires matching your specific model year and Gen III/IV variant. The LR4 (1999–2006) and LY2 (2007–2014) use different valve train specifications and engine management interfaces. Our VIN verification confirms the correct 4.8L for your vehicle before it ships.
GM truck owners comparing a used engine, a remanufactured engine, and an OEM engine for the 4.8L LS will find the used OEM route most practical. A used GM 4.8L LS engine from a verified low-mileage donor gives you the factory iron-block V8 as an OEM engine — the factory LS architecture, the original naturally aspirated simplicity — at a price that makes the repair economically sensible. Unlike a remanufactured engine from a worn core, this is an original factory OEM assembly. Choosing a used 4.8L LS OEM engine restores the reliable V8 performance your truck was built to deliver.
Every used GM 4.8L LS engine ships with up to a 90-day warranty and arrives within 2 to 5 business days. Installation is not included. These are genuine GM OEM engines, and we stand behind every unit.
Specifications
Product Type
Engine
Displacement (Engine Size)
4.8L V8 (LR4)
Fuel Type
Gasoline
Availability
In Stock
Shipping
Nationwide Available
Use Case
Ideal for performance builds, swaps, and replacements
Frequently Asked Questions
What is a 4.8 ls engine?
The 4.8 LS engine is a small-block V8 from GM’s LS family, known for its reliability, efficiency, and strong performance in trucks and performance builds.
How much HP does a 4.8 LS engine make?
The 4.8 LS produces between 255 and 295 horsepower, depending on the model and year. It delivers solid performance with excellent low-end torque, making it ideal for both work and performance applications.
How much does a 4.8 ls engine weigh?
The 4.8 LS engine weighs around 470 to 520 pounds, depending on whether it has an iron or aluminum block. Its relatively light weight for a V8 makes it a popular choice for swaps and performance builds.
How big is a 4.8 LS engine?
The 4.8 LS engine has a displacement of 4.8 liters (293 cubic inches), making it a compact yet powerful small-block V8.
Is a 4.8 engine a V8?
Yes, the 4.8 engine is a V8, part of GM’s LS small-block engine family.
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Shipping Policy
Our shipping policy is flexible, as the shipping charges depend on the location. A few certain remote regions like CO, UT, NY, OR, & CA may have additional shipping charges or delivery fees. However, some circumstances may cause delays, but we always strive to deliver your order as quickly as possible.
Please note that all shipping times are estimates and not guaranteed. We examine all rebuilt and used engines before shipment and aim to provide high-quality used engines and transmissions. Shipping details and fees will be disclosed to consumers before any transactions are made. Our team is operational 24/7, and you can call us at +1-888-799-0188 to place an order.
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