How Much Does It Cost to LS Swap a Car, and Why Does My Cat Judge Me for It?

How Much Does It Cost to LS Swap a Car, and Why Does My Cat Judge Me for It?

When it comes to car modifications, few projects are as iconic or as polarizing as an LS engine swap. The idea of dropping a Chevrolet LS engine into a non-GM vehicle has become a rite of passage for gearheads, a symbol of both ingenuity and a slight disregard for the “purist” ethos. But before you dive into this mechanical rabbit hole, you’re probably wondering: how much does it cost to LS swap a car? And more importantly, why does your cat seem to judge you every time you mention it? Let’s break it down.


The Allure of the LS Swap

The LS engine series, produced by General Motors, is renowned for its lightweight design, compact size, and incredible power potential. Whether it’s the LS1, LS3, or the monstrous LS7, these engines have become the go-to choice for enthusiasts looking to inject some serious horsepower into their vehicles. But why the obsession? Here are a few reasons:

  1. Power-to-Weight Ratio: LS engines are relatively lightweight, making them ideal for swaps into smaller or older vehicles.
  2. Availability: With millions of these engines produced, finding one (and parts for it) is easier than finding a parking spot at a car show.
  3. Aftermarket Support: The LS platform has an enormous aftermarket ecosystem, meaning you can customize it to your heart’s content.
  4. Cost-Effectiveness: Compared to other high-performance engines, LS engines offer a lot of bang for your buck.

But let’s not sugarcoat it—this isn’t a plug-and-play operation. The cost of an LS swap can vary wildly depending on your goals, your vehicle, and how much of the work you can do yourself.


Breaking Down the Costs

1. The Engine Itself

The heart of the swap is, of course, the LS engine. Prices can range from $1,500 for a used, high-mileage engine to $10,000 or more for a brand-new crate engine. If you’re looking for something in the middle, a rebuilt or remanufactured LS engine might set you back $3,000 to $6,000.

Pro Tip: Don’t forget to factor in the cost of ancillary components like the alternator, starter, and accessories. These can add a few hundred dollars to your budget.

2. Transmission

Unless you’re planning to keep your existing transmission (which is rarely compatible), you’ll need to budget for a new one. A used transmission can cost anywhere from $500 to $2,000, while a high-performance unit might run you $3,000 or more.

3. Mounts and Adapters

Your car wasn’t designed to house an LS engine, so you’ll need motor mounts, transmission mounts, and possibly adapter plates. These can cost between $200 and $600, depending on your vehicle and the complexity of the swap.

4. Exhaust System

The LS engine will likely require a custom exhaust system to fit your car’s chassis. Expect to spend $500 to $1,500 on headers, piping, and mufflers.

5. Fuel System

The LS engine’s fuel requirements may differ from your car’s original setup. You might need a new fuel pump, injectors, and lines, which can add $300 to $1,000 to your budget.

6. Cooling System

Keeping your LS engine cool is crucial. A new radiator, fans, and hoses can cost $400 to $800.

7. Wiring and Electronics

One of the trickiest parts of an LS swap is integrating the engine’s electronics with your car’s existing systems. A standalone wiring harness and ECU can cost $500 to $1,200, and if you’re not comfortable with wiring, you might need to hire a professional.

8. Driveshaft and Rear End

The increased power of an LS engine might overwhelm your car’s stock driveshaft and rear end. Upgrading these components can cost $500 to $2,000.

9. Labor Costs

If you’re not doing the work yourself, labor costs can easily double or triple your budget. Expect to pay $3,000 to $10,000 for a professional shop to handle the swap.

10. Miscellaneous Expenses

Don’t forget about the little things: fluids, gaskets, bolts, and other odds and ends. These can add another $500 to $1,000 to your total.


Total Cost Estimate

So, how much does it cost to LS swap a car? Here’s a rough breakdown:

  • DIY Enthusiast: $5,000 to $10,000
  • Professional Installation: $10,000 to $20,000+

Of course, these numbers can vary significantly depending on your specific project. A simple swap into a lightweight, rear-wheel-drive car will be cheaper than a complex swap into a front-wheel-drive or all-wheel-drive vehicle.


Why Does My Cat Judge Me?

Now, let’s address the elephant (or cat) in the room. Why does your feline friend seem to disapprove of your LS swap plans? Here are a few theories:

  1. Noise Concerns: Cats have sensitive hearing, and the roar of an LS engine might be overwhelming for them.
  2. Attention Deficit: Your cat might be jealous of the time and money you’re investing in your car instead of them.
  3. Philosophical Differences: Perhaps your cat is a purist who believes in keeping cars stock. Or maybe they’re just a Ford fan.

Whatever the reason, it’s clear that your cat has strong opinions about your automotive endeavors. Maybe it’s time to buy them a tiny set of mechanic’s tools to keep them occupied.


FAQs

1. Can I LS swap any car?

Technically, yes—but some cars are easier to swap than others. Rear-wheel-drive vehicles with ample engine bay space are the best candidates.

2. How long does an LS swap take?

The timeline can vary widely. A simple swap might take a few weeks, while a complex project could take several months.

3. Will an LS swap increase my car’s value?

Not necessarily. While an LS swap can make your car more desirable to certain buyers, it might also limit your audience. Purists and collectors often prefer original configurations.

4. Can I daily drive an LS-swapped car?

Absolutely! Many LS-swapped cars are perfectly streetable, provided the swap is done correctly and the car is properly tuned.

5. What’s the best car for an LS swap?

Popular choices include the Mazda Miata, Nissan 240SX, and older BMWs. These cars are lightweight, rear-wheel-drive, and have plenty of aftermarket support.


In conclusion, an LS swap is a thrilling way to breathe new life into your car, but it’s not a decision to take lightly. The costs can add up quickly, and the process requires a significant amount of time, skill, and patience. But if you’re willing to put in the effort, the result can be a one-of-a-kind machine that turns heads and puts a smile on your face—even if your cat still judges you for it.