What Carburetor Fits This Manifold?

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Them Holley's are nice....but pricey!

They are pricey, but in their defense, they are a fantastic mix of economy and performance. Much like the Thermoquad with their very small primaries and big secondaries.

They are a viable alternative if you don't like the learning curve of the Thermoquad.

If it was me, I would get that thin Edelbrock spacer and run an Eddy 600.
 
The warping of the center section is of course from over heating.
IF you use a TQ, use the thick OE or equal gasket under it. This also applies to the Edelbrock AFB & AVS carbs. These Carter style carbs are aluminum & suck up heat and act poorly.

Your intake is a stock unit that has been modified. Do not modify it any further. DO NOT mill the center divider!
 
I did some poking. Not an Offy Dual-Port (though circle symbol is similar). Appears they didn't modify the plenum. It is cast-iron factory and perhaps ~71 340 (PN 3512100), asking $249 (www.ebay.com/itm/1971-340-4-Barrel-Intake-Manifold-3512100-Mopar-Plymouth-Dodge-/182042150194), or maybe Mopar Performance for W-2 heads only, asking $180 (www.ebay.com/itm/Mopar-Racing-Small...M-4BBL-W-2-Heads-V8-318-340-360-/222045657149). Neither is exactly the same casting, but both are close, and both are rare.
 

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If you want it to be more friendly with square bore carbs you will need an adapter but you should do this.... Round the edges of the divider too.

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Very rarely do TQ bodies warp, once in a great while. In the 45 years of using them, I had ONE warp. Most of the time when someone says they warped or had a cracked bowl, it is because they forgot the 2 screws under the choke plate and they either pryed it apart with a screwdriver and broke it, or beat on it with a hammer and broke it. Then when they figure out that they fucked up- they just say that it warped to save face.
 
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