What are the benefits of a carburetor spacer?

A carb spacer increases the distance between the intake manifold and the bottom of the carburetor, which reduces the velocity of the intake charge. A four-hole spacer helps to direct the air-fuel mixture, making the streams more efficient. It also assists in preventing reversion from the pressure pulses.

Does carb spacer increase horsepower?

On the 350, best results were found with a 2-inch spacer. Its use produced up to 6 more horsepower at peak and as much as 14 more at 750 rpm over peak power. On the 400-inch engine, a stack of three 1-inch spacers produced the best results.

How do I choose a carburetor spacer?

Spacers often fall into one of two categories. Open plenum spacers increase the total area of the intake manifold, which helps build mid-range and high-rpm horsepower. That makes them ideal for racing. Wood and aluminum are the better material choices for racers who reshape or stack spacers.

Do carb spacers actually work?

Do carb spacers make more power?

Yes, they will give you more horsepower. But carb spacers have another important function. They also act as insulators which keep engine heat away from your carburetor to ensure cooler incoming air and fuel.

Should you use a carb spacer?

Yes, they will give you more horsepower. But carb spacers have another important function. They also act as insulators which keep engine heat away from your carburetor to ensure cooler incoming air and fuel. Carb spacers are generally made from wood, aluminum, phenolic resin, or polymer.

What effect does a carburetor spacer have?

Spacers are said to improve air/fuel vaporization through and out of the carburetor. Anytime the air/fuel charge has to turn sharply coming off the carb, it increases the chance of separating the fuel from the air.

What is the best carb spacer material?

Not only is wood the best insulating material around, it’s cheap and easy to shape to match any intake manifold opening. Wood loves to soak up fuel and chemicals, causing the spacer to warp or fall apart.

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