How to Get More Horsepower for a 5.7 Liter TBI

by Jen Davis

The 5.7-liter V-8 TBI engine was installed in a variety of different General Motors vehicles. This small-block V-8 is one of GM's most modifiable motors and can be altered to provide extra horsepower without having to undergo a major overhaul or rebuild. There are a variety of aftermarket parts available to increase the overall horsepower and performance of this engine.

Step 1

Replace the spark plugs with the kind designed to provide optimum aftermarket performance. Performance spark plugs can improve firing, decrease fuel consumption and lead to increased horsepower.

Step 2

Install a high-quality aftermarket air filter. A high-quality air filter will allow more air to flow through your engine. The amount of air mixing with your fuel and traveling through the engine is one of the factors that influences your engine's horsepower, torque and performance.

Step 3

Install a performance chip. Performance chips work by fine-tuning your 5.7-liter engine's computer to create the optimal fuel-air mixture. The improved fuel-air mixture will improve performance and increase your vehicle's horsepower by allowing for more efficient fuel consumption.

Step 4

Upgrade your exhaust system. By upgrading your exhaust system to high-quality performance parts, you will increase the amount of airflow that can travel through the system, allowing exhaust gases to exit your vehicle more quickly. In turn, the engine will then burn fuel more efficiently.

Step 5

Install a turbocharger or supercharger, depending on your preference. Both can add a noticeable amount of horsepower to your 5.7-liter engine. The turbocharger uses recycled exhaust gases to generate additional power. The supercharger is pulley-driven and uses power generated by the crank and the engine.

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