How Much Does a 5.3 LS Weight? (Answered!)

How Much Does a 5.3 LS Weight Answered

When you are looking to buy a new engine for your vehicle, the first thing you want to know is how much it weighs. You don’t want something too heavy or too light. So what does a 5.3L LS engine weigh? How about a 4.8L LS? Or maybe even a 6.2L version? In this article, we’ll cover all those questions and more.

While there are a lot of different configurations of the 5.3L LS engine, the average weight is between 360 to 400 pounds. This weight is almost the same as the 4.8L and less than the 6.2 LS engine. However, a fully dressed aluminum LS engine weighs 460 pounds.

So while you may want to use one of these other configurations because they weigh less, keep in mind that this would result in a loss of power compared to your current setup.

How Much Does The Iron 5.3 LS Weight

The Iron block 5.3L LS weighs 218 pounds. Iron blocks are much heavier than aluminum blocks and not as strong, durable, or light. They are also more expensive than aluminum blocks.

What Is The Weight Of The Aluminum 5.7 LS Weight?

The aluminum block 5.7L LS weighs around 109 pounds; this is pretty heavier than the iron block. The difference in weight is because aluminum is lighter than iron, but it’s also more expensive to make an engine out of aluminum than iron.

Aluminum blocks are also more prone to warping than their iron counterparts, making them unsuitable for high-performance applications. They’re also more likely to crack over time, rust, and corrode from water or salt build-up during long storage periods.

Which One Is Better? Aluminum Or Iron Block

The first thing to remember when deciding whether you want an iron block or aluminum block engine is that aluminum is lighter. Lighter weight means better fuel economy and acceleration, but it also means less strength, so if you’re planning on towing your truck around a farm, an iron block might be a better choice.

On the other hand, if you’re looking for something that will do well at drag races or different types of racing events where speed is vital, then an aluminum-block engine can give you just what you needβ€”and save some dollars in the process too!

If you’re interested in getting yourself, a 5.3 LS explicitly built for street driving and city life (or even just commuting), then go with an aluminum-block engine. That is because it offers more power than its iron counterpart while still providing plenty of torque for those daily tasks like merging into traffic from stop signs.

How Much Horsepower Does A 5.3 LS Engine Have?

The 5.3 LS engine is a V8 cylinder engine that produces between 310 to 340 horsepower (hp). This 5.3 LS also comes in different forms: The 4L60E automatic transmission is excellent for lower horsepower engines; the 4L80E automatic transmission can handle up to about 350 hp; the 6L90E six-speed manual transmission works best with high horsepower engines.

How Much Does A 4.8 LS Engine Weigh?

The 4.8 LS engine is similar to the 4.3 in a few ways, even in weight. This engine weighs about 375 pounds.

You can also find the weight of a 4.8 LS engine, by year and model, in the table below:

  • 2000-2001 4.8L Vortec: 358 pounds
  • 2002-2004 4.8L Vortec: 359 lbs
  • 2005-2011 5.3L LLT: 380 lbs (manual), 383 lbs (automatic)

As you can see above, each year has its weight depending on the number of cylinders it uses and the material of the block.

What Is The Difference Between The 4.8 and 5.3 Blocks?

The blocks of these engines are almost the same, but internal, there lies some significant differences, which are;

  1. The LS 4.8 has an 83 mm stroke, while the 5.3 uses a 92 mm stroke.
  2. The piston is another significant difference between them. The LS 4.8 has a flat piston, while 5.3 comes with a dished piston.
  3. The casting number can also help to tell apart the engines. A 4.8 has a T in front of the casting number. 5.3 does not have this letter before it.

What Is The Weight Of A 6.2 LS Engine?

The weight of a 6.2 LS engine depends on the year of production and what type of block it has. The cast iron blocks are weighty but also more durable than aluminum blocks. A 6.2 LS engine weighs between 403 to 466 pounds. It also has a horsepower of up to 450.

You should use the cast iron engine block if you want your car to handle more power. It has more mass, so it can take higher horsepower levels without breaking down as quickly as an aluminum block when subjected to similar stressors.

If you aren’t planning on modifying your truck or car and want something that works well for its stock configuration, then there’s no need to buy an expensive high-performance version like this one.

Which Is The Best LS Engine?

The 5.3L LS is an excellent all-around engine, which makes it the perfect choice for many enthusiasts. It is the best choice if you’re looking for an LS that will provide a good balance of power and fuel economy. The 4.8L LS is another popular choice because it offers plenty of power without being too expensive or difficult to install in your vehicle.

The 6.2L LS has more than enough torque capacity due to its more significant displacement; however, some may find that this engine produces too much torque at lower RPMs for their needs (and potentially causes damage). 


The exact weight of your 5.3 LS will depend on the generation of the engine and what material it has; 

So, how much does a 5.3 LS weigh? The answer to this question depends on the year, make, and model of your truck. 

You can install different engine types in your trucks or vehicles, each with varying weights. In addition to finding out what engine your car is in, you should also find out what kind of block it has (the part under the hood).

We hope this guide has helped you better understand how much your 5.3 LS engine weighs and how it compares to other variations of the same engine.

Scroll to Top