Gen III/IV engines have the same basic requirements for their exhaust system as other automotive engines, but these high-performance engines have specific EFI system requirements that must be met for the system to perform properly. The LS engine requires at least one oxygen sensor (as many as four), which must be placed a minimum of […]
How to install a Fuel System into an LS-Swapped Chevelle
Installing a fuel-injection system on a classic muscle car that was originally equipped with a carbureted fuel system requires careful planning and component selection. Many components that go into a fuel system, including the tank, fuel pump, lines, fittings, and filters, must be replaced or upgraded. Simply installing an electric fuel pump does not work. […]
Choosing the best motor mounts for a Chevelle LS Swap
The key to any swap is getting the engine into the chassis. This can be easy or it can take weeks to figure out, it all depends on the car. The 1968– 1972 A-Body vehicles are easily converted to Chevy small-block frame mounts, but the earlier 1964–1967 A-Body cars are not as simple. General Motors […]
How to Pick the Right Oil Pan for Your LT Swap
There are a lot of choices when selecting an oil pan for your LT-engine swap, make sure you get the right one! Regardless of the vehicle, the oil pan is often the most difficult obstacle to overcome in an engine swap. Unlike the LS platform, which has no less than 10 oil pan variations from […]
How to Start Swapping an LT Engine Into Your Car or Truck
The main concerns for LT swaps are fitting the oil pan, accessory drive, power steering, and fuel system. Another issue is the exhaust (mainly headers or manifolds) because the head design for LT engines is different from the LS series, and there are simply not very many options for swaps, so you need to get […]
LS SWAPS: Wiring Harness and Wiring Guide
The wiring aspect of any LS swap is undoubtedly the most difficult. Most builders are familiar with fabrication techniques, trouble shooting, and parts swapping to make things work, but electronics rise to a much higher level of complexity. Wiring has carried an aura of mystery that can send a shiver down the spine of even […]
LS SWAPS: Fuel Systems Guide
Fuel-injection systems require careful planning and component selection. There are many components that go into a fuel system (including tank, fuel pump, lines, fittings, and filters) and each one has multiple replacement/upgrade options. So, simply installing an electric fuel pump is not going to work. The fuel-pressure requirements alone necessitate some detailed planning. This […]
LS SWAPS: Engine Management Systems Guide
Each engine requires its own computer, and the programming must match the engine, so computers can’t be swapped even if the plugs are the same type. General Motors produces several computer types and each is built for a specific engine group. Some work with many engines, and some only work with one. It is very […]
LS SWAPS: Accessory Drives and Cooling System Guide
Stock accessory drives were designed to fit in late-model vehicles with modern frames and spacing. Depending on which accessory drives are retained, clearance may or may not be an issue. However, the A/C compressor constantly presents an issue. It’s typically mounted low on the passenger’s side of the engine, and it tends to hit the […]
LS SWAPS: Oil Pan Guide
Once the motor mounts have been sorted out, the next step is to choose an oil pan. Many stock oil pans are available for LS engines, each one designed for a specific chassis. With so many different oil-pan options, there is confusion as to which oil pans fit which chassis. This Tech Tip is […]