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Old 02-09-2011, 03:29 PM   #31
Don Himes
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Default Re: 396 2bl combo

I believe the rating to be 352CFM.
Billy (visiting The Don)
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Old 02-09-2011, 10:33 PM   #32
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Default Re: 396 2bl combo

well I stand corrected per a circle track article on a 2gc carb the 435 cfm version is the one Billy Nees refered to the 1 3/8 venturi carb, the 1 1/4 venturi carb I ran was rated at 390 cfm per the article in circle track, SMI wrote the atricle and said these carbs were actually flowed , and flowed more than there rating.the 435 version is rated at 500 cfm and circle track racers use it alot , the 390 version is used in rules limited situations it flowed 435 with alittle modifications to the boosters all legal in Stock Elim.....Just my 2 cents
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Old 02-10-2011, 11:48 AM   #33
Bobby Zlatkin
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Default Re: 396 2bl combo

Is messing with the boosters legal?
Is that considered a jetting change?
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Old 02-10-2011, 12:58 PM   #34
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Default Re: 396 2bl combo

Shouldn't be, but 2bl guys around here were doing that in the '70s. Seemed to go through tech OK. Pretty dramatic improvement in air flow and track times. I couldn't believe they were getting away with it.
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Old 02-11-2011, 01:16 PM   #35
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Default Re: 396 2bl combo

...400 ft lbs of tourque in a 4000 lb R/Stock wagon??...it might work...
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Old 02-11-2011, 03:31 PM   #36
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Default Re: 396 2bl combo

Seems like I remember from the old days that a 2 Brl.Brl. Flow Bench was at a higher level of vac. than a 4 Brl. Does anyone remember the difference? Would 400 CFM on 2 Brl. bench be about 300 CFM on a 4 Brl Bence setting?
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Old 02-11-2011, 07:59 PM   #37
Dwight Southerland
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Default Re: 396 2bl combo

Industry standards 2 bbl ratings are at 3.0" Hg, 4 bbl ratings are at 1.5" Hg
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Old 02-11-2011, 11:06 PM   #38
joe huestis
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Default Re: 396 2bl combo

Wasn't Bob's wagon the 396-2V combo when Frank Tantillo owned the car years ago ??
Joe Huestis L/SA 9724
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Old 02-12-2011, 01:07 AM   #39
Mark Yacavone
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Default Re: 396 2bl combo

Quote:
Originally Posted by joe huestis View Post
Wasn't Bob's wagon the 396-2V combo when Frank Tantillo owned the car years ago ??
Joe Huestis L/SA 9724
No . Ray Litty built the car in the 70's with a 350/250 2 bbl PG and a tune up from W A Lee.
Frank bought the car from a guy in So. Windsor, Ct. I'm pretty sure he then put the 4 bbl on it in the late 80's. Might have gotten it from Eddie Bednaz, although I know I worked on the carb too.
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Old 02-17-2011, 09:51 PM   #40
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Default Re: 396 2bl combo

are under carburated motors sensitive to header primary tube size and collector size/length?
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