Having a smooth running engine is necessary to have a performance automobile. One part that can help to keep your vehicle in optimal condition is Edelbrock valve springs. These springs are part of your valve train. They have the job of keeping tension against your valves so they can perform optimally. Every time that your rocker arm presses down on your valve, the valve spring pushes right back so that when the rocker arm releases its pressure, the valve will spring right back into place. Worn out or weak valve springs mean bad news for your automobile. That is when your valve does not have enough strength to pop back into place and then your engine's performance gets poor. Edelbrock valve springs are made of the highest quality spring wire to make sure that they will be durable for a long time to come. They are precision wound to match the close specifications of your particular make and model of vehicle. This ensures that you will get maximum performance out of them. There are several styles to choose from. The Sure seat Valve Springs work best with OEM heads, Edelbrock Performer plus, performer RPM, and Torker-plus camshafts. The #5900 Series of valve springs work great with OEM valve rotors. Auto parts customers certainly deserve professional technical support when purchasing high-quality auto parts for a car or truck. So of course we've created a twenty-four hour a day support and help call center to help you with your queries. Nobody likes to pay for shipping, so there is free shipping for every order greater than $50. If you spot a lower price elsewhere, call us - we will beat any legitimate auto part price.