Quadrajet Problem Solving > Quadrajet Parts and Numbers

Carb ID

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Ethan1:
 I'm not sure what you are asking? As rare as the 0. What do you mean by "0"? I am sorry, just not sure what your asking.  :)

jhill71455:
Sorry, looking back at my posts they don't make much sense. I have been told that the 7042270 is pretty rare. From what I can tell the 7042276 is the same only calibrated for high altitude. Were these installed from the factory or dealer and did they stamp the last # later? The first numbers are very obvious but the last is hard to read. Thanks, Jamie

Cliff Ruggles:
The 7042276 is not the same as the 7042270 Ram Air carburetor.  The 270 was used on the Pontiac 455 "HO" engines, which had round port high flow cylinder heads, and Ram Air.

The 7042276 was used on the base engine(s), not the High Output 455.

The Ram Air carb is extremely rare and valuable, the 276 carb is just a standand unit, probably worth about $25-75 as a core, depending on condition......Cliff

jhill71455:
It's in good shape but missing some parts. Thanks for the help Cliff!

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