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21
Diagnose a Quadrajet carburetor problem / Re: Quadrajet choke affecting timing?
« Last post by Cliff Ruggles on November 12, 2024, 05:24:41 AM »
Did you rule out bad fuel here?

Looking at your posts it appears that the car has been sitting around for quite some time with little use. 

This new fuel goes bad quickly.

Since you've narrowed it down to the carb at a minimum I'd pull it apart and clean it out, and see if anything found it's way into the N/S assembly causing it to flood....
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Diagnose a Quadrajet carburetor problem / Re: Quadrajet choke affecting timing?
« Last post by BenNoakes on November 12, 2024, 03:08:21 AM »
Ignition is new and good. Turns out qjet started dumping fuel into the intake and fouling up the plugs instantly so I've now taken it off to see what's going on or if leaking. That will sure make a difference in trying to tune...hopefully.
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Dialing in your rebuilt Quadrajet carburetor / 17083224 on a 83 chevy auto need help with adj fast Idle and idle
« Last post by bober on November 10, 2024, 05:43:22 PM »
I just bought this 83 1/2 ton and it has a 350 auto has had carb worked on ( rebuilt ) .On fresh 350 . Seems to run well but when cold start it idles and has a choke spring in the int. .  Where do I start with adj. the cold idle ? Thanks for any help
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Quadrajet Carb Talk and Tips / Re: A/T and M/T carbs
« Last post by Kenth on November 06, 2024, 01:25:13 AM »
Yes, some 1967 Corvette with 327 uses the Holley 4160 #3810 (with A.I.R #3814).

Other 1967 327/350 uses the Quadrajet.

If you need a proper 1967 Quadrajet i have one 7027218 for 1967 327/350 in very good unmolested original condition (renewed by me) for sale.
It is the third type 1967 and as such it has the upgraded later inlet needle and seat (not the problematic  first membran style). It will be hard to find a nicer one.
And the best of all, i´m in Sweden so shipping cost wont kill you.

Send PM for pictures and info if interested, thank you.
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Quadrajet Carb Talk and Tips / Re: A/T and M/T carbs
« Last post by Erick on November 06, 2024, 12:48:05 AM »
I changed for a q-jet manifold.
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Quadrajet Carb Talk and Tips / Re: A/T and M/T carbs
« Last post by quadrajam on November 05, 2024, 01:08:27 PM »
Not familiar with older corvettes, Will your intake manifold accept a Q-jet or is it
square bore only?

QJ
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Quadrajet Carb Talk and Tips / Re: A/T and M/T carbs
« Last post by Erick on November 05, 2024, 11:55:38 AM »
If I'm not mistaken, my car originally came with a Holley (67 SB Vette) but I don't like those carbs, and because I don't have the original one,  I'm looking for a quadrajet for replacement. After a bad experience with a "remanufactured' I'm looking for all the infos before making another mistake. So all advices are welcome.
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Quadrajet Carb Talk and Tips / Re: A/T and M/T carbs
« Last post by quadrajam on November 05, 2024, 04:56:53 AM »
Dont bother with a M/T carb. Not neccessary and usualy have a lot more wear to the moving
parts. Properly built with Cliffs parts and recipe a Q-jet will be fine on a A/T, M/T CVT, Jet drive,
Reeves drive or whatever.

QJ
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Quadrajet Carb Talk and Tips / Re: A/T and M/T carbs
« Last post by Kenth on November 04, 2024, 02:46:43 AM »
CSB M/T and A/T may very well have the same main jets, primary rods and secondary rods.
But, generally the idle/low speed calibration is richer in the M/T carbs.

What would be the number on Q-jet needed?
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Quadrajet Carb Talk and Tips / Re: A/T and M/T carbs
« Last post by Erick on November 03, 2024, 08:28:54 AM »
No, no particular year in mind. After my troubles with the remanufactured carburetor I am still looking for another carburetor, but it is not easy to find here in France espacially M/T carb. And before making another mistake I wanted to know the difference between A/T and M/T carbs. My car has M/T. I've seen on Lars's papers that calibration seems to be the same for Vette A/T or M/T small blocks.
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