What is the main benefit of a 4-hole carburetor spacer?

A 4-hole carburetor spacer, like this Edelbrock 8711, is designed to enhance low-rpm torque and throttle response. It achieves this by dampening reversion effects, which helps maintain a more consistent air-fuel mixture at lower engine speeds.

What material is this spacer made from?

This Edelbrock carburetor spacer is made from black phenolic plastic. This material is commonly used for spacers due to its insulating properties and durability.

Will this spacer fit my carburetor?

This spacer is designed for carburetors with a standard 4150-style flange, often referred to as a square-bore carburetor. It's a 1-inch thick spacer.

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Specifications

Brand: Edelbrock
Part #: 8711
UPC: 85347087112

Edelbrock Carb Spacer 1-Inch 4-Hole

Name: Edelbrock Carb Spacer 1-Inch 4-Hole
Brand: Edelbrock
SKU: edelbrock-edelbrock-carb-spacer-1-inch-4-hole-t14-125891
Price: 57.95 USD
Availability: InStock

$57.95

Only 8 left in stock

Edelbrock 1-Inch 4-Hole Carb Spacer. Enhances low-rpm torque and throttle response.

Key Features

Fits carburetors with a standard 4150-style flange.
1-inch thickness adds a bit more distance between the carburetor and intake manifold.
4-hole design enhances low-rpm torque and throttle response.
Helps to dampen reversion effects on the carburetor.
Constructed from black phenolic plastic.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

This is the Edelbrock 1-inch, 4-hole carburetor spacer, part number 8711. It's made from black phenolic plastic and is designed to fit carburetors with a standard 4150-style flange, often found on many performance applications. This spacer is specifically designed to improve your engine's low-rpm torque and throttle response.

The 4-hole design is key here. Unlike open spacers that primarily add plenum volume, this design helps to dampen reversion effects. Reversion is essentially exhaust gases pushing back up into the intake manifold, which can disrupt the air-fuel mixture and hurt performance, especially at lower engine speeds. By dampening these effects, the 4-hole spacer helps maintain a more consistent air-fuel mixture, leading to that improved low-end grunt and a snappier throttle feel. It's a straightforward way to make your engine feel a bit more responsive when you're just getting into the throttle.