Edelbrock Carburetor Adapter — Square‑Bore to Spread‑Bore, One Size, Aluminum, Gaskets Included

The Edelbrock 2696 adapter is an aluminum conversion plate that lets four‑hole square‑bore carburetors bolt to spread‑bore (Quadra‑Jet/Thermo‑Quad) intake manifolds without modifying the manifold or carburetor.

This adapter is engineered as a direct replacement for the OE unit, providing a practical way to pair Edelbrock square‑bore carburetors with stock Quadra‑Jet and Thermo‑Quad manifolds. Built from durable aluminum with a natural finish, it preserves correct alignment and airflow while avoiding the need to buy a new intake or carburetor. The package includes the gaskets and hardware required for installation, so you can complete the swap with minimal additional parts.

How does the adapter enable mixing carburetors and intakes?

The Edelbrock 2696 acts as a precision interface between differing flange patterns and venturi layouts. It aligns the square‑bore carburetor's four individual venturis to the spread‑bore manifold openings so throttle and fuel passages line up correctly.

• Reconfigures bolt patterns from square‑bore to spread‑bore spacing
• Match individual venturi ports to corresponding manifold runners
• No permanent modifications to manifold or carburetor required
• Includes installation gaskets and mounting hardware

What materials and dimensions should I expect from this adapter?

The adapter is manufactured from aluminum for a balance of light weight, corrosion resistance, and thermal stability. The thickness is specified at 0.850 inches to maintain proper carburetor height and sealing, and its natural finish gives a clean, serviceable surface.

• Material: cast or CNC‑machined aluminum with natural finish
• Overall thickness: approximately 0.850 inches for correct spacing
• Design: individual venturi ports to preserve airflow paths
• Fitment: vehicle‑specific mounting locations for Quadra‑Jet/Thermo‑Quad manifolds

Will installation be straightforward for a DIY mechanic?

Yes — the adapter is intended as a direct replacement and is supplied with the gaskets and fasteners needed to mount the carburetor and seal to the manifold. Basic hand tools and an hour or two of shop time are usually sufficient for an experienced home mechanic.

• Comes with gaskets and hardware to simplify assembly
• No cutting, welding, or permanent alterations required
• Standard torque sequence applies to carburetor/manifold bolts
• Verify vehicle‑specific fit before installation to ensure compatibility

Who is this for: The Edelbrock 2696 adapter is aimed at restorers, hot‑rodders, and maintenance technicians who want to use an Edelbrock square‑bore carburetor on a vehicle equipped with factory Quadra‑Jet or Thermo‑Quad intake manifolds. It’s also a practical solution for anyone changing carburetors but wishing to retain the original intake, avoiding the cost and complexity of replacing multiple components.