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04-29-2009, 08:39 PM
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CC Member
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Join Date: Jun 2006
Location: Merced,
Ca
Cobra Make, Engine: West Coast-Ford Performance Solutions 533 BB
Posts: 390
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Not Ranked
One carb or two?
Among many other changes I'm making to my 533BB application I'm pondering the possibility of switching from the Vic Jr. single plane manifold to a dual plane such as the Performer RPM Air Gap to increase low end torque. Right now I'm running a Mighty Demon 850 single carb. I'm wondering why some intakes I've seen here have two carburetors instead of one. I've seen Blue Thunder and some other intakes with two four barrel carb pads. What is the practical difference, advantages or disadvantages? More airflow must be one. I'm most interested in streetability and response under 4000 RPM, won't be racing. Must be some disadvantage or everyone would be running two, no?
Thanks!
Dirk
__________________
The government giveth and the government taketh away..... if our rights are not God given then they're subject to revision!
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05-03-2009, 06:26 PM
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Senior Club Cobra Member
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Join Date: Jul 2001
Location: Carrollton,
TX
Cobra Make, Engine: JBL now SOLD
Posts: 1,735
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Not Ranked
With the range of carbs available nowadays, there is no performance reason to use two carbs. But some think they look good.
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6th generation Texan....
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05-03-2009, 07:03 PM
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CC Member
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Join Date: Jan 2008
Location: Williamsport,
PA
Cobra Make, Engine: Kellison Stallion 468 FE
Posts: 2,703
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Not Ranked
pretty general statement there.....
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05-03-2009, 07:12 PM
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CC Member
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Join Date: Jan 2008
Location: Williamsport,
PA
Cobra Make, Engine: Kellison Stallion 468 FE
Posts: 2,703
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Not Ranked
on a ford small block there are a wide and varied flavors of intakes to choose so the different carbs can be used also on ford big blocks fe's and 460's alike there aren't alot of players in the intake market especially dual planes for the street. if a person was to run a vacuum secondary carb, there are only a few choices and those choices get slimmer based on the motor you have. the combustion engine is a air pump, generally the more air you can stuff through it the better it will perform. that is usable air. if there is no performance reason to run two carbs why would anyone run fuel injection. the bigger air flow shouldn't do anything for performance.
two carbs is worth 5 tenths at the track, period. two carbs are easier to feed than one. you can achieve more hp gain for the street without sacrificing drivability
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05-03-2009, 08:23 PM
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CC Member
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Join Date: Dec 2006
Posts: 415
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Not Ranked
I have the Dual Plane Air Gap Intake with a Mighty Demon 850 carb on my 588 - it's plenty - plenty.
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05-03-2009, 08:29 PM
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Regularly Offensive
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Join Date: Feb 2006
Location: yuba city,
ca
Cobra Make, Engine: spf
Posts: 1,231
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Not Ranked
Dirk, fix the cooling problem first....... 
I hope everything is comming along well for you. Someday you can bring the big beast to a breakfast...........
__________________
Ed
Too close for missles, switching to guns.........
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05-03-2009, 08:52 PM
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CC Member
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Join Date: Jun 2006
Location: Merced,
Ca
Cobra Make, Engine: West Coast-Ford Performance Solutions 533 BB
Posts: 390
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Not Ranked
Breakfast Invite
I'd love it Ed, and Yuba City is only 3-4 hours from Merced LOL! Yeah we'll be on it this summer or I'm a confused Dutchman!! (uh oh.....)
Regards,
Dirk
__________________
The government giveth and the government taketh away..... if our rights are not God given then they're subject to revision!
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05-04-2009, 06:02 AM
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Senior Club Cobra Member
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Join Date: Jun 2007
Location: Covington,
wa
Cobra Make, Engine: Superformance # 532, 466 BB, 560HP
Posts: 3,027
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Not Ranked
Quote:
Originally Posted by jdean
With the range of carbs available nowadays, there is no performance reason to use two carbs. But some think they look good.
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Yep, I sure think they look good. 
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05-04-2009, 08:12 AM
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CC Member
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Join Date: Jan 2008
Location: Williamsport,
PA
Cobra Make, Engine: Kellison Stallion 468 FE
Posts: 2,703
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Not Ranked
Quote:
Originally Posted by DocDirk
I'd love it Ed, and Yuba City is only 3-4 hours from Merced LOL! Yeah we'll be on it this summer or I'm a confused Dutchman!! (uh oh.....)
Regards,
Dirk
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ya know if ya ain't dutch....ya ain't much |
05-04-2009, 01:05 PM
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CC Member
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Join Date: Jun 2006
Location: Merced,
Ca
Cobra Make, Engine: West Coast-Ford Performance Solutions 533 BB
Posts: 390
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Not Ranked
Dutchmen
Yeah and I've heard you can always tell a Dutchman.....
.......you just can't tell him much!!
Dirk
__________________
The government giveth and the government taketh away..... if our rights are not God given then they're subject to revision!
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05-04-2009, 04:42 PM
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CC Member
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Join Date: Jan 2008
Location: Williamsport,
PA
Cobra Make, Engine: Kellison Stallion 468 FE
Posts: 2,703
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Not Ranked
heheheh, good one........
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08-23-2009, 11:27 AM
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CC Member
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Join Date: Nov 2001
Location: Windham,,
Me
Cobra Make, Engine:
Posts: 1,590
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Not Ranked
Two Fours set up right is incredible,they tend to make the motor a little more thirsty.They sure do look good.I personally rather have a dual plane intake port matched to the heads with a single dblpmp Holley.Makes for very crisp throttle response.
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