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#1
09-11-2022, 07:34 PM
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Carburetor recommendations
I'm going to replace my carb soon and was wondering what I should get for cfm. Its a 350 2bbl soon to be a 4bbl.
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#2
09-11-2022, 08:27 PM
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Get a QJ for the year of your car.Tom
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#3
09-13-2022, 11:25 AM
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Quote:
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#4
09-13-2022, 01:21 PM
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I've tried that route, cores I have found are junk or over priced. I'm looking into an Edelbroc AVS2.
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#5
09-13-2022, 08:10 PM
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Quote:
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#6
09-13-2022, 01:41 PM
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Contact Sean at SMI and get a price for a done QJ for your application.Tom
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#7
09-13-2022, 01:42 PM
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If it’s not a restoration why pay big money for an inferior early Q-jet?
Plenty of reasonably priced ‘77 and later Q-jet cores are out there and are a far better design.
__________________
1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
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#8
09-13-2022, 09:47 PM
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What would the recommended CFM for a 350 be? 500 or 650?
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#9
09-13-2022, 11:16 PM
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Cliff had been giving his approval, to quadrJet power, in Houston. I'd gat a 77 and up unit from them, as ;art mentioned, get it with an alactric choke!!!
__________________
1977 Black Trans Am 180 HP Auto, essentially base model T/A. I'm the original owner, purchased May 7, 1977. Shut it off Shut it off Buddy, I just shut your Prius down... 
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#10
09-13-2022, 11:29 PM
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The late ‘70s 350 smogger engines were all equipped with 800 cfm Q-jets.
Hard to go wrong with a late model 800 cfm core that’s been redone by an expert.
__________________
1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
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#11
09-14-2022, 12:07 AM
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The avs2 carbs get rave reviews, I would like to hear back if you try one.
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#12
09-14-2022, 07:50 AM
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X2 on Quadrajet power… Can’t go wrong
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#13
09-14-2022, 08:03 AM
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Brent Flynn is still rebuilding QJets and recently did one for me.
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#14
01-15-2023, 10:35 AM
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I installed a edelbrock intake and a 600 performer carb, it runs good and seams to have woke up the engine.
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#15
01-15-2023, 06:39 PM
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Quote:
It is your car, and if you are happy, that is all that really matters! Jon
__________________
"Good carburetion is fuelish hot air".  "The most expensive carburetor is the wrong one given to you by your neighbor". If you truly believe that "one size fits all" try walking a mile in your spouse's shoes! Owner of The Carburetor Shop, LLC (of Missouri). Current caretaker of the remains of Stromberg Caburetor, and custodian of the existing Carter and Kingston carburetor drawings. |
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#16
01-15-2023, 09:32 PM
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My only advice is to check and double check the credentials of any so called "expert" if you have anyone rebuild one for you. I am in a 4 month ordeal trying to get my quadrajet back from a guy. Also that quadrajet is replacing a Edelbrock 750 cfm , my buddy has almost the same motor/tranny setup and is always getting better fuel economy with his QuadraJet then I am. And his car runs hard with the QJ. if your interested in an Edelbrock I have one I will sell if I ever get my QJ back.
__________________
Let's make welfare as hard to get as Veterans benefits! |
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#17
01-18-2023, 01:34 PM
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Enjoy it and if you need help doing any tuning glad to help, I'm just a town over.
__________________
Carburetor building & modification services Servicing the Pontiac community over 20 years |
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#18
01-18-2023, 03:06 PM
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#19
03-17-2024, 01:35 PM
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#20
09-14-2022, 08:35 AM
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There is no "best" carburetor for all applications.
If you want best driveability, fuel economy, power, and reliability; then the Q-Jet, as mentioned by many in this thread, is the way to go. If you want lots of "wow" from the 16-year-olds at the local car show; then go with the shiny new imitation. Jon
__________________
"Good carburetion is fuelish hot air". "The most expensive carburetor is the wrong one given to you by your neighbor". If you truly believe that "one size fits all" try walking a mile in your spouse's shoes! Owner of The Carburetor Shop, LLC (of Missouri). Current caretaker of the remains of Stromberg Caburetor, and custodian of the existing Carter and Kingston carburetor drawings. |
| The Following 3 Users Say Thank You to carbking For This Useful Post: | ||
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