Installing a V8 Engine into a Chevrolet S10

There's no question that installing a V8 engine into your Chevrolet S10 is one of the most well-known ways of instantly boosting the power of your truck to the point of making it practically untouchable in a race. Any of a number of V8 engines can be used for this modification, including the older 350 blocks, LT1s, LS1s, and Vortech truck engines. Each requires its own particular installation process, but all use largely the same parts. You'll need to purchase or scratch build the exhaust manifolds, purchase a replacement low-profile radiator, and you'll want to purchase the necessary engine mounts for the installation, as well.

You'll begin the installation process not by disassembling the truck, much as you'd like to do so. Instead, the first thing you'll have to do is purchase the engine you'll be using in the truck. Salvage yards are full of these engines, but you should be prepared for a shock. While it's possible to get a truck Vortech V8 for less than $1,000, you'll be paying significantly more for engines pulled from Camaros and Corvettes. All of the LS and LT series engines command a premium for the simple reason that they are so popular for engine swaps and hot rodding. Regardless of what engine you purchase for the swap, however, make certain that you also purchase the engine computer and wiring harness, as well. When you install these engines, there are adapters you can buy that allow you to plug the engine wiring harness into your truck's existing electronics. It makes the wiring process much easier.

Once you've got the engine you want to use for the truck, the next step is to purchase the necessary components you'll need to install the engine. In addition to the parts already mentioned, you'll also need to buy an exhaust system, replacement fuel system, and a new cooling fan.

Remove the truck's hood, and then unbolt the core support. The S-10 core support removes relatively easily, but it's a good idea to keep the parts together as much as possible to prevent their loss while you install the engine.

Unbolt the original engine from the chassis and the transmission, disconnect the wiring harnesses, exhaust system, fuel system and the air box from the engine, and then use an engine hoist to lift the engine off of the frame.

Check the transmission that is originally equipped with the truck. If the transmission in the truck is a 4L60E, than the V8 engine you choose should mate up to the transmission with no problems at all. Install the engine mounts onto the frame, then lower the replacement engine into the S10's engine bay. You may want to install the headers onto the engine before you place it in the engine compartment. While there really isn't much loss of space between the wheelwells and the exhaust headers, it still makes the installation easier if you don't have the fenders removed from the truck.

Assemble the remainder of the engine to the truck. For the most part, this is a straightforward installation. You'll be attaching the radiator hoses, the throttle linkage, wiring harness, and the other remaining hoses and connectors. In some cases you will have to use adapters, depending on the year S10 you are installing the engine into, while in other cases, the fittings will hook right up.

Once you've got the engine in place, you can assemble the core support with the low-profile radiator, and then assemble the core support onto the truck. The V8 engine is going to be about six inches to eight inches longer than the original engine in your truck, so you don't have a choice but to replace the radiator, and you may want to install an electric cooling fan, as well. This will make the engine produce a bit more horsepower, but mostly is a good idea for clearance issues, as the stock clutch-activated belt-driven fan usually won't fit into the engine compartment without some modification.

Once the engine is all hooked up and the truck reassembled, you can hook up the battery and crank it up. As long as the engine is being fed fuel and you've reattached all the necessary components of the truck, you should have no problem at all with getting the truck started.