Chevy 6.2 Engine: Their Largest V8 - VehicleHistory (2024)

Lauren H

Feb 9, 2021

Chevy 6.2 Engine: Their Largest V8 - VehicleHistory (1)

Are you looking for a new vehicle? If so, you should look for one that has the right type of engine for your specific needs. So, let’s take a look at the 6.2L Chevy engine.

What is the 6.2L Chevy engine?

The 6.2L (376 ci) Chevy engine is one of Chevy’s most powerful engines. This advanced V8 small-block engine has 420 hp and 460 lb-ft. The 6.2L engine uses Dynamic Fuel Management (DFM) to save fuel without diminishing performance.

There is a lot more to learn about the 6.2L Chevy engine. But first, let’s go over a bit of the Chevy engine history. Next, we will cover which models have this engine. Then we will round it out by giving you the most frequently asked questions about the 6.2L Chevy engine.

History of the 6.2L Chevy Engine

The 6.2L Chevy engine is an LS/LT based General Motors small-block engine. This motor replaced the Chevy small-block Northstar engine and has been in production since 1995. The 6.2L motor is the main V8 used in GM’s line of rear-wheel-drive vehicles.

Chevy initially rolled out its Active Fuel Management system in 2005. The Dynamic Fuel Management system was born from that first AFM system. And now, the 6.2L engine with DFM is the biggest and most powerful V8 in its segment.

These motors use a Dynamic Fuel Management system versus Active Fuel Management. This system alternates between eight- and four-cylinders. The DFM has 17 cylinder patterns. Since it has so many cylinder patterns, it is able to continually mix those patterns and optimize the motor’s efficiency and power at any speed.

Which Models Have a Chevy 6.2L Engine?

The 6.2L Chevy engine is the small-block V8 that’s used in most of Chevy’s performance vehicles.

It’s also used in all Chevy trucks andche its large SUVs. The Chevy models that have a 6.2L engine include the Camaro SS, Corvette Stingray, Suburban, Yukon XL, Silverado HS, Sierra HD, Express and Savana vans, and the Camaro ZL1.

People Also Ask

Is the 6.2L Chevrolet Engine Used in any Trucks?

The L92 was the first 6.2L truck engine and it was introduced in 2007. It was designed to be used in General Motors luxury trucks and SUVs and is still used as one of Chevy’s motor options today.

What is the Most Powerful Chevy Engine?

The 6.2L LT5 supercharged crate engine is the most powerful engine that has ever been offered in any Chevy production vehicle. The LT5 is the motor that is in the Chevy Corvette ZR1.

How Does the 6.2L Chevy Engine Work?

This engine design only uses rod bearings, lifters, and bore spacing. The basic LS engines use cast-iron blocks and the performance engines are all aluminum and have cast-iron cylinder liners. It has 17 cylinder patterns that continually mix to optimize the motor’s efficiency and power.

How Much Horsepower is a 6.2L Engine?

The General Motors 6.2L EcoTec3 V8 engine has 420 horsepower at 5,600 RPMs. Its top torque is 460 pounds at 4,000 RPMs. This motor’s compression ratio is 11.5 to 1 and the displacement is 376 CID. The 6.2L EcoTec3 is a Generation V small-block V8 engine.

Do You Have to Use Premium Gas in the Chevy 6.2L Engine?

General Motors recommends using 93 octane gas for the 6.2L V8 engine vehicles. But, in the owner’s manual, it says you can use gas with octane as low as 87. Just remember, though, if you want to get the best performance, and gas mileage, you will need to use the 93 octane gas.

Is the 6.2L Chevrolet Engine a Big Block?

No, not exactly. The 6.2L engine could be described as a 6.2L big-block modular. Most big-block engines have more than 400 cubic inches of displacement and they weigh more. And the small-block engines have a smaller displacement. The 6.2L engine, though, fits into a 4.02-inch bore. Larger bores, strokes, valves, and ports result in significantly more power.

Is the Chevy 6.2L Engine Good?

The Chevy 6.2L engine is an advanced engine and has a Dynamic Fuel Management (DFM) system. That means this motor uses a cylinder deactivation system that varies depending on your load. This system switches cylinder patterns in milliseconds and the V8 motor can continue operating on just two cylinders when necessary. This results in better gas mileage, power, and engine life.

What Problems Does the Chevrolet 6.2L Have?

Some common issues include carbon build-up, lifter collapse, bent pushrods, transmission shuttering and/or vibrating, and a few other smaller problems.

The smaller problems include fuel injectors, fuel pumps, lower intake manifold gasket, engine mounts, and manifold bolts.

Owner Reviews

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Murray on January 27, 2024

Unsatisfied

I purchased a new Silverado with the 6.2L engine and loved it until at 20,000 miles the well maintained engine had fresh Mobil 1 oil every 4000 miles had to be replaced. GM makes beautiful junk.I went online to see if anyone else had the same issues only to find out that several customers had this issue and there is a class action law suit against GM which I will be a part of,and I hope that it doesn't happen to anyone else who purchased a vehicle with this engine.

Doug Campbell on March 5, 2024

Satisfied

I’ve owned 3 gmc Sierra’s all with the 6.2 L. I’ve had no engine issues and I found if you open the exhaust system to the 3.5 inch by removing the restriction at the muffler. I’ve increased fuel mileage to 18 city and 23 highway. I also have a 21 Tahoe with the 5.3L which I have had several issues with. I’ll take the 6.2 over the 5.3 any day.

Tucker on November 26, 2023

Check High Country

I have theChevy High Country with the 6.2 liter and I couldn't be happier with the performance and comfort in the ride itself. I'm getting around 15miles in the city and 21 on the highway for having such a big motor I'm impressed 😎

Sam DeLoach Sr. on December 17, 2023

Sam DeLoach Sr.

I've a 2017 z07 supercharged LT2. It is drop dead gerogeous, and at 650 hp, it has almost all the power anyone in their right mind can handle.

David frein on November 10, 2022

Zr2

My new zr2 has so much power… love this truck…gas mileage isn’t bad considering 420 hp… thank you Chevy for this awesome truck

Lauren H

Lauren H. has sold new and used cars, negotiated numerous car deals, has a thorough knowledge of the best and worst vehicles produced, and has spent the last 10-years as an automotive writer.

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Chevy 6.2 Engine: Their Largest V8 - VehicleHistory (2024)
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