Swapping motors in Subarus with Chevy LS engines, often referred to as an LS swap, is a popular modification within the automotive enthusiast community. This process involves replacing the original Subaru engine with a Chevrolet LS series V8 engine. Here are some key points to consider when contemplating an LS swap in a Subaru:

Advantages of LS Swaps in Subarus:

1. Power and Performance:

   • The Chevy LS series engines are known for their robust performance and power output. Swapping in an LS engine can significantly increase horsepower and torque compared to many stock Subaru engines.

2. Aftermarket Support:

   • The LS engine has extensive aftermarket support, making it easier to find performance parts, upgrades, and accessories. This can lead to increased customization options and potential for further power gains.

3. Reliability:

   • LS engines are known for their durability and reliability. Many enthusiasts appreciate the reliability and ease of maintenance that comes with the LS series.

4. Availability:

   • Chevy LS engines are widely available in various configurations, making them relatively accessible for those looking to undertake an engine swap project.

5. Compatibility:

   • The LS engine's design and dimensions make it suitable for a variety of platforms, including Subarus. While modifications will be necessary, the LS engine can fit within the engine bay of many Subaru models.

Considerations and Challenges:

1. Custom Fabrication:

   • Engine mounts, transmission adapters, and custom exhaust systems may need to be fabricated to accommodate the LS engine in the Subaru chassis.

2. Electronics and Wiring:

   • Integrating the LS engine with the Subaru's electronics and wiring can be a complex task. Adapters and custom wiring may be required to ensure proper functionality.

3. Transmission Compatibility:

   • Swapping to an LS engine may necessitate a transmission change. Ensuring compatibility and modifying the drivetrain to handle the increased power is crucial.

4. Weight Distribution:

   • Modifying the suspension and handling characteristics may be necessary to maintain optimal weight distribution after the LS engine swap.

5. Cost:

   • While the LS engine itself might be relatively affordable, the total cost of the swap, including custom parts, labor, and additional components, can add up quickly.

Legal and Emissions Considerations:

1. Legalities:

   • Intended for offroad/competition use only.

Professional Assistance:

1. Expertise:

   • If you're not experienced with engine swaps, seeking the assistance of a professional mechanic or a specialized shop with expertise in LS swaps can be crucial for a successful and reliable conversion.

2. Consultation:

   • Before starting the project, consult with experienced enthusiasts, mechanics, or forums dedicated to engine swaps to gather insights and advice.

An LS swap in a Subaru can result in a high-performance vehicle, but it requires careful planning, technical expertise, and a thorough understanding of the challenges involved. Always prioritize safety, legality, and the overall feasibility of the project before undertaking an engine swap.

I bought the car back in October of 2016 and it was a childhood dream come true, I beat the hell out of it for about 4 years constantly blowing up transmissions and collecting more and more go fast parts until I finally blew up the engine in April of 2020. After I blew it up I realized it was for the better since it gave me the opportunity to final have a full blown project car like I always wanted, but I had to decide how I wanted to go about it . I always wanted to build a drift car so I knew I wanted my Subaru to be different than most akd to be rwd, I went through a few options of how I was gonna go about , throwing around ideas like a 1jz,2jz, rotary and then ended up deciding to go with the LS platform because their cheap reliable and just about every junk yard in the country has a couple dozen of them. With help from my good friend Derek at Roxbury Auto Wreckers I was able to get a running LQ4 for the project and with the knowledge I learned from both BAM performance and Matt's Auto Repair I was able to get the car burning tires in no time with some help and motivation from awesome friends and my amazing wife Ana who is now stuck riding in the death trap with me as my co-pilot. This web site would not be possible without a Shoe and a Stroke(Dad) and they are the best people ever.