Air and Fuel› Carburetors and Components

Demon

650 CFM Speed Carburetor, 4-Barrel, Mechanical Secondaries

$516.60

SKU: 1282010

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Special Order
Ships in 4–6 weeks
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$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Demon 650 CFM Speed Demon Carburetor is a 4-barrel carburetor with mechanical secondaries. It features a clear Dichromate finish for corrosion protection and good looks.

This carburetor is calibrated for mild 302 to 427 cid engines and is best suited for 400 HP engines. It includes dual accelerator pumps for enhanced fuel delivery during initial acceleration, billet metering blocks for precise fuel metering, and a 4-corner idle system for optimal idle control. The billet baseplate with Idle-Eze™ technology allows for fine-tuning of idle speed. Large capacity float bowls prevent fuel starvation, and dual feed fuel inlets ensure consistent, high-volume fuel delivery. It also features a "Quik Release" non-stick gasket for easy jet changes and large glass float-level sight windows for safe and easy fuel level adjustments.
Show original supplier description
The Demon 650 CFM Speed Demon Carburetor (SPD-650-MS) is a high-performance 4-barrel carburetor designed for muscle cars and mild performance applications. It boasts a clear Dichromate finish, providing both aesthetic appeal and protection against corrosion. Engineered for mild 302 to 427 cid engines, this carburetor is ideal for applications up to 400 HP. Key features include mechanical secondaries for aggressive acceleration, dual accelerator pumps to ensure immediate fuel delivery, and billet metering blocks for precise fuel management. The 4-corner idle system offers granular control over idle speed, further enhanced by the Billet Baseplate with Idle-Eze™ for a smoother transition from off-idle. Additionally, "Quik Release" gaskets facilitate quick jet changes, and large glass float-level sight windows allow for easy and safe fuel level adjustments. Professional engine tuning is strongly recommended for optimal performance and to ensure proper calibration of this carburetor. The manufacturer also offers the complete line of Holley/Demon carburetors, and customers are encouraged to inquire about other needs.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandDemon
Part Number1282010
CategoryAir and Fuel
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Returns & Fitment

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Shipping

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