340 vs 440 six pack carbs question?
#335622
06/01/09 09:21 PM
06/01/09 09:21 PM
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Joined: Feb 2007
Posts: 908 North Chicagoland
newbee69
OP
super stock
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OP
super stock
Joined: Feb 2007
Posts: 908
North Chicagoland
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Alright, I am sure this has been asked many times before, but its a hard thing to punch into the search function. what exactly is the difference b/w the 340 and 440 carbs? I mean they are both 2300 series. Is it just jet sizes, power valve, accelerator pump differences? Are the air bleeds and venturis different sizes? Or is there more too it? Thanks.
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Re: 340 vs 440 six pack carbs question?
[Re: newbee69]
#335624
06/01/09 09:40 PM
06/01/09 09:40 PM
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Joined: Jan 2003
Posts: 3,905 Minnesota
3twos
master
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master
Joined: Jan 2003
Posts: 3,905
Minnesota
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The numbers for sure are different and there are date codes on them if you looking for correct vintage carbs they would have to be right for your year of car. Also the venturi's or throats are bigger and there are probably more things different. I had 440 carbs on a 340 and they worked fine, it probably would work the other way as well.
Al & Sheila
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Re: 340 vs 440 six pack carbs question?
[Re: newbee69]
#335626
06/02/09 12:38 PM
06/02/09 12:38 PM
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Joined: Dec 2007
Posts: 18,157 Mass
DAYCLONA
I Live Here
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I Live Here
Joined: Dec 2007
Posts: 18,157
Mass
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Air bleeds, and venturi size are different, between the 340/440 carbs,....as are obviously numbers, venting etc,....and a few CFM differences between AT/MT 340/440's.......if you don't care about the "numbers" thing,.....340 end Carbs on a 440 will react faster to opening, regardless of spring tuning, vs the same spring tuned 440 end carb because of venturi/ orifice size
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Re: 340 vs 440 six pack carbs question?
[Re: newbee69]
#335631
06/04/09 10:08 AM
06/04/09 10:08 AM
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Joined: Jan 2003
Posts: 9,436 Blair County,PA
62maxwgn
master
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master
Joined: Jan 2003
Posts: 9,436
Blair County,PA
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Quote:
Are you talking about those jet plates they sell at Promax? This might be a dumb question but do I need adjustable plates? Are they nonadjustable in stock form?
Unless you are planning various engine modifications,you don't need adjustable plates.Adjustable plates have provisions to change jets.Stock plates need to be drilled to change jetting.Once you drill stock plates you are pretty much stuck with what you have.I have changed a few sets back as they were but it's not an easy task.If your motor is stock,a little fine tuning will be more than adequate.Depends on your personal choice or what you are trying to accomplish. .
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Re: 340 vs 440 six pack carbs question?
[Re: DAYCLONA]
#335632
07/24/09 11:21 AM
07/24/09 11:21 AM
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Joined: Jan 2003
Posts: 1,620 MA
ragtop
top fuel
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top fuel
Joined: Jan 2003
Posts: 1,620
MA
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Quote:
Air bleeds, and venturi size are different, between the 340/440 carbs,....as are obviously numbers, venting etc,....and a few CFM differences between AT/MT 340/440's.......if you don't care about the "numbers" thing,.....340 end Carbs on a 440 will react faster to opening, regardless of spring tuning, vs the same spring tuned 440 end carb because of venturi/ orifice size
What are the venturi sizes of the 340 six pack vrs. the 440 Six Pack? Thanks.
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Re: 340 vs 440 six pack carbs question?
[Re: ragtop]
#335633
07/25/09 08:07 AM
07/25/09 08:07 AM
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Joined: Nov 2006
Posts: 511 Jasper, Indiana
fastnos
mopar
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mopar
Joined: Nov 2006
Posts: 511
Jasper, Indiana
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Call this guy and ask any questions you have. He has a ad on Racingjunk.com right now, just go to that site, and type in 6-pack in the search window. He's out of Connersville, Indiana, close to Indy. "I have been rebuilding six packs for over 30 years. I will build your six pack to fit your needs. You tell me your needs and I will jet and build to your specs! $350.00 + shipping. This price includes (3) carb kits and labor rebuilding your (3) carbs! Jet plates and secondary diaphragms and metering blocks and main metering jets, and custom machine work is extra charge. Feel free to email me at philliprfish@yahoo.com or phone me from 9:00 am until 5:30 pm Monday-Friday 1-(765)825-6607. I am 75 miles east of Indy. All work is guaranteed and if needed I will help over the phone. I will send detailed step by step instructions so you can do the final tune! I also carry Mopar used and NOS parts. Please visit me at my web site. http://rain.prohosting.com/motrefok/Seller Phone Number: (765) 825-6607 "
A True Hybrid: Burns Gas AND Rubber!
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