A Chevrolet 350 big block.
Do you feel the need for more speed? Horsepower is measured by the amount of time it takes a vehicle to perform a given task. Acceleration and speed increase with horsepower. Muscle-car enthusiasts believe you can never have too much horsepower. Since horsepower equals time and time equals money at the drag strip, the enthusiasts are right. Getting from point A to point B doesn't have to happen at breakneck speeds, but every once in a while its nice to hit the gas. Adding horsepower to your stock 350 will ensure you aren't left at the starting line.
Instructions
1. Exchange the stock two-barrel carburetor for a four-barrel carburetor. Pressing the accelerator will not make you go faster if more fuel doesn't make it to the carburetor. 350 Chevy engines often come from the factory with a two-barrel carburetor. Changing to a four-barrel carburetor will allow for more fuel when you need it. In normal driving conditions the carburetor will operate under two barrels, the other two only opening during excessive acceleration.
2. Take the cylinder heads to a machine shop for porting and polishing. The amount of horsepower achieved depends on the air flow received. A machine shop can port and polish the heads safely and correctly. When done wrong a port and polish job will lower performance. Ask the machine shop if a set of Chevrolet 305 cylinder heads can be added. The addition of smaller heads improves compression.
3. Change the stock Chevrolet air intake for an aftermarket cold-air intake. Cold-air intakes allow cooler air to be brought to the top of the engine. Denser air (colder air) provides a more powerful burn than air taken from around a warm engine. A cold-air intake will change the amount of horsepower by five to 20 points depending upon brand.
4. Bolt on a supercharger. This step involves changing the design of your hood, but the addition of a supercharger definitely increases horsepower. Installing a super ,charger will give a 35 to 40 percent boost to your horsepower rate.
5. Change the fuel pump to a high-flow fuel pump. Many changes to improve horsepower made to a vehicle forces more air into the combustion chambers. Without the proper air-to-fuel ratio the car will spit, sputter and stall. Creating a balance between increased air and fuel is the key to increasing horsepower.
6. Change the stock exhaust to an aftermarket exhaust system. A stock exhaust system impedes the flow of exhaust from the engine. Performance exhaust is larger and provides a better flow rate, increasing horsepower performance and fuel economy.
Tags: machine shop, amount horsepower, carburetor will, Change stock, cold-air intake