Table of Contents
How much power does a carb spacer add?
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.
What is the benefit of a carb 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 intake manifold spacer work?
If the vehicle has a carburetor, then the spacer improves the vacuum response which increases the performance. It also provides some extra height in the fuel to air mixture. This gradual flow into the intake ports increases the possible torque response.
Do I need to run a carb spacer?
Unless you are operating at or above 6,000 – 8,000 RPM and are using a single plane intake manifold, you “shouldn’t” need a carb spacer.
How do I choose a carburetor spacer?
“The further the carburetor boosters are from the intake valve, the more that air/fuel droplet has time to vaporize; the more time the air has to get chilled.” Two-inch-tall spacers are generally a good baseline height choice on race cars; for street cars that operate at lower rpm and usually have hood clearance …
Does an intake manifold spacer increase horsepower?
One of the main benefits of a throttle body spacer is an increase in horsepower. Ultimately, the spacer increases the air velocity which causes an increase in atomization.
What material is best for carb spacer?
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.