If you’re a fan of classic G-body cars, such as the Chevrolet Monte Carlo, Buick Regal, or Pontiac Grand Prix, you may want to make some changes to improve their performance and fuel efficiency. One popular way to do this is by doing an LS swap. This is when you replace the original engine and transmission with a newer, more efficient LS engine.
Before you begin your LS swap, it’s important to know the process and have all the right tools and equipment. This guide will walk you through the steps of an LS swap in a G-body car, so you know what to expect.
Step 1: Get the Tools and Equipment
Before you start, make sure you have all the tools and equipment you need. This includes basic hand tools like wrenches and sockets, as well as specialized tools like engine hoists and transmission jacks.
Step 2: Remove the Old Engine and Transmission
The first step is to take out the original engine and transmission. You’ll need to disconnect things like the battery, exhaust, and transmission linkage. Then, use a hoist to lift the engine and transmission out of the car. Keep all the hardware and parts you remove, you may need them later.
Step 3: Prepare the LS Engine and Transmission
Now that you have the old engine and transmission out, it’s time to prepare the LS engine and transmission. This includes installing new engine mounts, a custom oil pan, and headers. You’ll also need to modify or replace the transmission to work with the LS engine. Be sure to follow the instructions from the LS engine swap kit manufacturer for specific details.
Step 4: Install the LS Engine and Transmission
With the LS engine and transmission ready, you can now install them into the car. Make sure to align and properly secure the engine and transmission. You’ll also need to connect various mechanical and electrical connections, such as the radiator, cooling system, and wiring harness.
Step 5: Set Up the Engine Control Module
Once the engine and transmission are in, you’ll need to set up the engine control module. This includes programming it to work with the specific LS engine and transmission, and connecting it to the car’s electrical system.
Step 6: Take it for a Test Drive
Finally, take the car for a test drive to make sure everything is working properly. Listen for any unusual sounds or vibrations, and make sure the engine is running smoothly.
In summary, an LS swap can improve the performance and fuel efficiency of your G-body car. But, it’s important to know that it’s a complex process that requires a good understanding of car mechanics and the right tools and equipment. It’s also important to check the legality of it before doing such modification.
