Rochester 4 barrel carb

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Old Apr 15, 2022 | 10:40 AM
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F85 330 ctls's Avatar
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Rochester 4 barrel carb

Will a 1980 Rochester work on a stock 330 4 barrel intake( stock) they seem like they are the same size.
Old Apr 15, 2022 | 10:47 AM
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Did the 330 manifold mount a Quadrajet or a 4GC?
Old Apr 15, 2022 | 10:47 AM
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Originally Posted by F85 330 ctls
Will a 1980 Rochester work on a stock 330 4 barrel intake( stock) they seem like they are the same size.
What year 330? The 64-65 330s used the square-bore 4GC. The 66-67 330s used the Quadrajet. An emissions-compliant 1980s Qjet will bolt on to the 66-67 manifold. That's about all you can say for it. Connections will be different, throttle linkage will be different, and the one certainty is that the jetting will be wrong.
Old Apr 15, 2022 | 11:13 AM
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F85 330 ctls's Avatar
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67 330 cutlass
Old Apr 15, 2022 | 11:15 AM
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So get one from that yr?would it work better?
Old Apr 15, 2022 | 01:12 PM
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Originally Posted by F85 330 ctls
So get one from that yr?would it work better?
One from a 1967 330 would work really well.
Old Apr 15, 2022 | 02:01 PM
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Thanks now to find one
Old Apr 15, 2022 | 02:11 PM
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Originally Posted by F85 330 ctls
Thanks now to find one
Carb number 7027036. There are at least five of them on ebay right now.

Old Apr 15, 2022 | 06:36 PM
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And rebuilt.
Old Apr 15, 2022 | 08:02 PM
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Thank you, on to ebay
Old May 10, 2022 | 10:41 AM
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Would carburetor 7028250 work well in my 67 330 f85?
Old May 11, 2022 | 02:37 AM
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Originally Posted by F85 330 ctls
Would carburetor 7028250 work well in my 67 330 f85?
It will "work", but it won't be a bolt-on. 7028250 is from a 1968 350. The throttle linkage and the divorced choke are both different from 1967 to 1968. A correct 1967 carb would be best. Failing that, a 1970 carb (7040250) with the integral choke would be easier to convert to electric, solving the choke problem. You'll still need to modify your accelerator rod to fit any 1968-newer Qjet, however.
Old May 11, 2022 | 08:43 AM
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It is worth the time to try to find the exact carburetor by #. This will alleviate fabricating/modifying things to a level that will work but never really be correct. Think of "universal fits all" vs the "correct" stuff...there is a big difference.

Good luck!!!
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