Review on Edelbrock 2696 Square-Bore to Spread-Bore Carburetor Adapter, Multi, One Size - Enhancing SEO by Mario Portillo

It fits my factory GM QuadraJet intake so I can fit an Edelbrock 1405 600cfm carburetor. All gaskets and fasteners were included. It was drilled and tapped for a vacuum port but the hole was not drilled through so it would be useless. I'm not sure Edelbrock expects you to finish drilling a hole when you need this connector. Anyway, I used the vacuum port on the back of the Edelbrock carburetor to connect my brakes, just like the original QuadraJet. Ideally I'd change the manifolds to proper rectangular ones, but this works great as an alternative if you don't want to change the manifolds.