1407 750 CFM 4 Barrel Carburetor Square Bore - Manual Choke

In this review the 1407 750 CFM 4 Barrel Carburetor is evaluated for classic V8 builds and restorations; it is best for enthusiasts who need a high-flow, square flange carburetor with a simple, durable design. The bottom line: this carburetor offers a straightforward, two-piece aluminum construction and 750 CFM performance that fit many 1960s-1980s V8 manifolds with square flanges, making it a practical replacement for non-EGR manifolds where an electric choke is not required. It is a solid choice when reliability and heat dissipation matter more than factory emissions features.

Key Features

• 750 CFM flow: Provides high airflow suitable for larger V8 engines and builds that need increased fuel delivery at higher rpm.
• Two-piece aluminum alloy body: The lightweight, two-piece design helps prevent warping and improves heat dissipation for longer service life.
• Square flange compatibility: Fits almost all V8 engines from the 1960s to 1980s that use square flange carburetors, simplifying swaps on period manifolds.
• Manual choke and single inlet: Offers a simple, mechanical choke arrangement and a single fuel inlet for straightforward installation on non-EGR manifolds.
• Precision cast construction: The aluminum alloy build is impact resistant and resists high temperature and pressure, reducing the chance of deformation.

Who It's For

The 1407 750 CFM carburetor is aimed at DIY mechanics, restomod builders, and hot rodders installing carburetors on vintage V8 engines from the 1960s through the 1980s that use square flanges and do not require EGR or exhaust-heated choke provisions. It suits users who prefer a manual choke setup and a single fuel inlet for a simpler, serviceable system.

It is not ideal for vehicles that require EGR ports or exhaust-heated choke provisions, or for owners who need an electric or automatic choke. Customers seeking factory emission controls or multi-inlet fuel arrangements should look for an alternative designed with those features.

Pros & Cons

Pros

• High 750 CFM flow supports larger V8 power demands and aftermarket builds.
• Two-piece lightweight aluminum alloy construction reduces warping and improves cooling.
• Square flange design increases compatibility with many 1960s-1980s V8 manifolds.
• Precision cast material offers sturdy, impact- and heat-resistant durability.

Cons

• Manual choke only and no EGR provisions limit use on vehicles that require emission controls.
• Single fuel inlet may require adapter work for systems expecting dual or different feed orientations.

Specifications

Our Verdict

The 1407 750 CFM 4 Barrel Carburetor is a practical, value-oriented option for builders installing a high-flow carburetor on classic V8 engines with square flanges. Its two-piece aluminum construction and 750 CFM capacity make it reliable for performance street engines and restorations that do not require EGR or electric choke features. Choose this unit when compatibility, durability, and simpler mechanical control are the priority.

Frequently Asked Questions

Will this carburetor fit my classic V8 manifold?
If your manifold uses a square flange and the engine is a 1960s-1980s V8, it will almost certainly fit, but verify bolt pattern and spacer thickness before purchase.

Does it include an electric choke or EGR provisions?
No, this model is equipped with a manual choke and has no EGR or exhaust-heated choke provisions.

What material is the carburetor made from?
The body is precision cast aluminum alloy in a two-piece design intended to resist warping and improve heat dissipation.