Reply to "Ford Manifold ID - Help Requested"

George PAdmin.

I know De Tomaso would mill the holes of the spread bore manifold to accommodate a 650 cfm Holley, but that was just being cheap. The only "good" purpose for the D1ZE manifold is to match with the 4300D carburetor. But the 4300D carburetor is not recommended. Even the manifold was a bit "wonky". Ford cast the spread bore manifolds so that the primary holes were in the middle, i.e. the carburetor was off-set towards the rear of the engine. The purpose was to improve fuel distribution during part throttle operation (emissions), at the expense of "performance".

So if you already own the Edelbrock Performer and an aftermarket carburetor, keep them.

2/8/183:45 PM

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