Best OE 2 BBL Cast Intake?

George Jets said

The '89 to '91 318 TBI Mid Rise cast iron intake is far superior to all other 2 bbl intake manifolds. Dual Plane besides.

Although you will have to drill and tap for the 2 barrel carb pattern that you wish to install, as the TBI pattern was offset for the Throttle Body Injection unit of those years.

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These 318 TBI intake manifold ports match the 318 cylinder head ports.

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Totally agree, but I'll add 2 things:
-There's no choke well on these manifolds, so you're going to need to run a manual choke cable. I don't think anybody ever made an electric conversion for any of the factory 2bbls.
-As long as you're redrilling for a 2bbl, I would drill for one of the larger pattern 2bbls. from a 360/383/400- at various times they used Carter BBD, Holley 2210, and Stromberg WWC carbs. I like the Carters. You can also make a plate or buy adapters to go to the Holley 350/500 cfm 2bbl., there are a lot more tuning parts available for those, since they are basically the front half of a Holley 4bbl.