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#1
03-23-2014, 01:23 AM
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2 circuit VS 3 circuit carbs
On the street can you tell me the difference between the 2??? AS far as street car???
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461 Stroker: 265/276 Comp Cam Solid roller . 340CFM E-Head Victor Intake 1050 Dom Carb. 390/430 9" Gears with a T400 trans 4200 converter. Street weight 3850. 1.49 60ft. 275/60/15 M/T DR 10.57 SO FAR |
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#2
03-23-2014, 07:21 AM
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Yes,
A 3- circuit is a direct feed from the fuel bowl to the carb & is a constant feed into the engine due to the engines vacuum draw. With the car parked Idle can be fairly stable but underway can become unbalanced as for most part people try to compensate with the idle mix screws.
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Carburetor building & modification services Servicing the Pontiac community over 20 years |
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#3
03-23-2014, 07:35 AM
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The 2 circuit is best for drag use.
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#4
03-23-2014, 10:46 AM
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3 and 4 circuit carbs have a place in the performance community. Many times it is not on a street car or a typical drag car. I worked on a NASCAR carb one time for Ford/"others" that had 8 circuits built into the metering block. Very specialized deal to play games (during caution laps - note the venue -) and save gas.
Tom Vaught
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
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#5
03-23-2014, 11:17 AM
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8-circuits??...we talking cable tv here??...Haha!
__________________
Carburetor building & modification services Servicing the Pontiac community over 20 years |
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#6
03-23-2014, 02:54 PM
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They had emulsion holes everywhere Jeff. **
I will send you the excel file with the emulsion hole locations sometime. Tom Vaught ** Course they had an independent "Yellow Flag" circuit for each barrel too.
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
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#7
03-23-2014, 10:10 PM
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Quote:
__________________
461 Stroker: 265/276 Comp Cam Solid roller . 340CFM E-Head Victor Intake 1050 Dom Carb. 390/430 9" Gears with a T400 trans 4200 converter. Street weight 3850. 1.49 60ft. 275/60/15 M/T DR 10.57 SO FAR |
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#8
03-23-2014, 10:27 PM
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I run a 1050 dom 8896 3 circuit modified to a 2 circuit on my street strip car. It idels great and maintains good a/f's under all driving conditions. If your worried about running to rich and fueling down your oil you should invest In an a/f gauge.
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