Edelbrock 2696 Square‑Bore to Spread‑Bore Carburetor Adapter — One Size, Machined Aluminium with Gaskets & Hardware

The Edelbrock 2696 adapter converts four-hole square‑bore carburetors to fit spread‑bore manifolds, letting you mount square‑bore Edelbrock carbs to Quadra Jet and Thermo‑Quad intakes without replacing the intake or carburetor.

This compact aluminum adapter provides a dependable mechanical bridge between different carburetor and intake styles so you can swap components during engine upgrades or restorations. Machined from aluminum with a natural finish, the plate reproduces the OEM footprint while offering individual venturi ports for each cylinder, and it ships with gaskets and hardware to streamline installation. The adapter is a practical, cost‑effective alternative to sourcing matching carburetors or custom manifolds when changing engines or tuning performance.

How does this adapter help when I’m changing carburetors or intakes?

The 2696 acts as an interface that preserves the original manifold while accepting a square‑bore Edelbrock carburetor. Instead of replacing the intake or buying a new carburetor that matches the intake bolt pattern, you use this adapter to marry the two components quickly and reliably.

• Replaces factory adapter plate dimensions to fit stock Quadra Jet and Thermo‑Quad manifolds
• Enables mounting of Edelbrock four‑hole square‑bore carburetors on spread‑bore intakes
• Saves cost compared with purchasing a new intake or matching carburetor
• Includes gaskets and hardware for a complete install package

What are the build quality and materials?

Manufactured from aluminum, the adapter offers a lightweight yet rigid connection that resists corrosion and warping under normal operating conditions. The natural machined finish provides a true flat surface for sealing and a durable mounting interface that mirrors OE geometry.

• Construction: machined aluminum for strength and heat resistance
• Thickness: 0.850 inches for proper spacing and sealing
• Finish: natural aluminum that resists corrosion and matches aftermarket components
• Design: individual venturi ports to align with cylinder runners

Is installation difficult and what’s included in the kit?

Installation is straightforward for anyone comfortable with basic intake and carburetor work. The adapter is vehicle‑specific by fit type but installs in place of the original adapter plate; included hardware and gaskets reduce the need for separate parts purchases.

• Hardware and gaskets included to simplify the swap
• Fits existing intake and carburetor bolt patterns—check vehicle compatibility
• Requires standard hand tools and basic tuning after mechanical fitment
• Individual venturi ports make alignment with manifold runners easier

Will this change drivability or require tuning?

Mechanically, the adapter only repositions the carburetor; any drivability changes will come from the carburetor choice, jetting, and ignition settings rather than the adapter itself. After installation, expect to verify idle, mixture and timing to ensure optimal performance.

• Adapter does not alter carburetor calibration—tune the carb as needed
• Verify idle and mixture after installation for smooth operation
• May require minor jetting or linkage adjustments depending on carburetor model

Who is this for: The Edelbrock 2696 adapter is for enthusiasts, restorers, and mechanics who want to combine Edelbrock four‑hole square‑bore carburetors with stock Quadra Jet or Thermo‑Quad manifolds. It’s ideal when preserving the original intake is important, when swapping carburetors during performance builds, or when minimizing parts purchases during restorations.