I was just wondering what is needed to install the Offenhauser 2×1 intake manifold and how on my 1964 dodge dart gt??
Thanks

Well you need two carbs and air cleaners.
Offy makes a linkage kit that will control both carbs, but not sure about the connection to your pedal.
Auto trans will need some connection to the kickdown rod.

tell us what you have and what you want to do.

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Hyper_pak

I just want to know how to connect it to the pedal, and how to do the connection to the kickdown rod. Also, how to connect the chokes.
Thanks

There are some decent pics on Google if you search "offenhauser slant six dual carb manifold." See below, but here's another one that's a bit larger.



It looks like the stock '64 throttle rod attaches to the rear carb in the same way that it would attach to a single carb. The Offenhauser linkage attaches to both carb throttle linkages, pivots at two points on the manifold, and translates the throttle movement from the rear carb to the front carb.

However, the attachment point with the car's rotating throttle rod is a few inches further rearward than it is with a stock single carb. I doubt there's enough slack to slide that rod backward through the firewall, so you may have to cut and weld it a bit shorter. Or if you have no access to a welder, maybe get creative with a thread die and a coupling nut. That stock throttle rod also includes an arm for the stock kickdown mechanism.

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Somehow I ended up owning three 1964 slant six A-bodies. I race one of them.
Escape Velocity Racing

If you don't have carbs yet, you'd also want at least one of them to be the early type with the bracket for that throttle rod. Or get even more creative with fabrication.

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Somehow I ended up owning three 1964 slant six A-bodies. I race one of them.
Escape Velocity Racing

You'd want this linkage kit, which adapts the pre-'67 rod-type throttle linkage as on your '64 to operate the dual 1bbls. See also here annd here, and base your choke conversion (as shown in one of thos elinks) on a № 1234 Electric choke kit. To successfully run the 2×1 setup, you need two identical carburetors. Identical in specification, identical in condition. "Close enough" isn't, and neither is "they both fit and look about the same".

Holley 1945 carbs are a really good pick for a 2×1 setup. Fortunately, they're also the least difficult to find as new old stock (perfect condition) items. It will usually still take patience to wind up with two identical ones.

Air cleaners: two stock '63-'67 "small and tall" 1bbl units.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Do this air cleaner mod, this looks great. IMO

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Hyper_pak