liriuda Carburetor Adapter Plate — 0.85 in Aluminum Spacer, Square‑Bore to Spread‑Bore with Gaskets & Hardware

The liriuda Edelbrock 2696 adapter plate is a 0.85" thick aluminum spacer that lets you mount a square-bore Edelbrock carburetor to a factory Quadrajet or Thermo-Quad spread-bore intake manifold.

This adapter provides a straightforward mechanical solution when you want the performance or serviceability of an Edelbrock square-bore carburetor on vehicles that retain an OEM spread-bore manifold flange. Machined from natural-finish aluminum, the kit includes the adapter plate, upper and lower gaskets, studs, nuts, lock washers and fillister-head bolts needed to secure the carburetor and adapter to the intake. It's designed as an individual-venturi, port-to-port spacer to preserve alignment and minimize sealing issues.

How does this adapter allow a square-bore carburetor to fit a spread-bore manifold?

The adapter matches the square-bore carburetor base pattern to the spread-bore flange on the intake manifold, creating a sealed transition between the two different bolt and port layouts. Its individual-venturi design aligns each carburetor port to the corresponding intake runner to keep airflow consistent.

• 0.850" thick aluminum plate engineered for structural stability.
• Machined square-bore flange on top to accept Edelbrock-style carbs.
• Spread-bore flange on bottom to bolt to OEM manifolds like Q-jet/Thermo-Quad.
• Includes gaskets and hardware to assemble without sourcing extras.

Will the 2696 adapter work with my Quadrajet or Thermo-Quad intake?

Yes, the adapter is specifically intended for use with spread-bore Quadrajet and Thermo-Quad style intake manifolds. Verify your manifold flange is the spread-bore pattern and that the Edelbrock carburetor you plan to use has the square-bore base.

• Designed for stock spread-bore manifolds (Q-jet/Thermo-Quad).
• Top flange matches Edelbrock square-bore carburetor bolt pattern.
• Ideal for Performer-series and similar square-bore Edelbrock carbs.
• Check stud/nut lengths and thread sizes before installation (included hardware is 5/16").

What hardware and gaskets are included, and how should I install them?

The kit arrives with one adapter, two gaskets (upper and lower), four carb studs, four nuts, four lock washers and four fillister head bolts for adapter-to-intake fastening. Use the studs for carb-to-adapter connections to prevent air leaks, and tighten fasteners evenly to the manufacturer's recommended torque.

• Included: adapter plate, upper and lower gaskets, 4 studs, 4 nuts, 4 lock washers, 4 fillister bolts.
• Use studs for secure carb mounting and to avoid stripping carburetor threads.
• Do not overtighten—tighten evenly to avoid warping the adapter or creating vacuum leaks.
• Inspect gaskets for alignment and replace if damaged or aged before installing.

What performance or drivability differences should I expect after fitting this spacer?

As a spacer and alignment adapter, the 2696 primarily enables fitment rather than directly boosting power; however, it can influence intake flow characteristics and throttle response depending on your carburetor and engine setup. Many users see improved throttle feel and cleaner idle when a matched carburetor is fitted correctly, though tuning may be required after installation.

• Helps align carburetor ports to intake runners, improving airflow uniformity.
• May affect idle vacuum and throttle response—requires carb tuning post-install.
• Aluminum construction resists warping compared with some thin spacer materials.
• Functions as a reliable mechanical adapter rather than a guaranteed performance part.

Who is this for: The liriuda Edelbrock 2696 adapter is aimed at mechanics, restorers and hot-rodders who want to mount an Edelbrock square-bore carburetor on vehicles that still use a factory spread-bore Quadrajet or Thermo-Quad intake. It's suitable for DIY installers and professional shops that need a complete adapter kit with matching gaskets and hardware to convert flange patterns while preserving proper port alignment. Confirm flange compatibility and be prepared to retune the carburetor after installation for optimal drivability.