396 2bl combo

dragginwagon · 02-02-2011, 07:01 AM

Has anybody dabbled with a 1969 B body 396 2bl combo ?

Billy Nees · 02-02-2011, 09:22 AM

Been done, don't work, better off with 2V 350.

Wade_Owens · 02-02-2011, 10:42 AM

Quote:

Originally Posted by Billy Nees

Been done, don't work, better off with 2V 350.

Billy, how bad is the 283 2bbl as far as consistency? Any headwind issues with that low of power, lol?

Wade

danny waters sr · 02-02-2011, 11:01 AM

Quote:

Originally Posted by Wade_Owens

Billy, how bad is the 283 2bbl as far as consistency? Any headwind issues with that low of power, lol?

Wade

I just tested my 2bbl combo this past weekend and Billy was right on . It was 1 second slower and 12 mph slower than the 4 bbl run the week before and lost20 in 60 ft (1/8 mile). I probably could tweak a little more ,but not worth it .... I have 2 - 2bbl carbs and intake if there are any brave souls who dare to try it.... If Billy says it is snowing in July ,you better get your snow plow out.......lol

Billy Nees · 02-02-2011, 11:24 AM

wade, any time you get into "lower class" Stockers you get into wind issues. The less power you have to work with the worse you are in the wind. Ask some "slow" Stocker guys how much having the track prepped right in front of you slows you down!

mtkawboy · 02-02-2011, 03:45 PM

40 years ago we stuck a stock 283 4 barrel on our P/S 283/185 4 speed 59 Biscayne and it was worth 1 second also

Jack McCarthy · 02-02-2011, 05:34 PM

i have that 2bbl 396 intake !

call if ya need one !

jack
502-558-3450

dragginwagon · 02-09-2011, 11:14 AM

what is the maximum cfm possible from Rochester 2bl 1.25 venturi??

Don Himes · 02-09-2011, 03:29 PM

I believe the rating to be 352CFM.
Billy (visiting The Don)

dahkahuna · 02-09-2011, 10:33 PM

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

02-02-2011, 07:01 AM	#1
dragginwagon Junior Member Join Date: Aug 2010 Posts: 30 Likes: 0 Liked 0 Times in 0 Posts	396 2bl combo Has anybody dabbled with a 1969 B body 396 2bl combo ?

02-02-2011, 09:22 AM	#2
Billy Nees VIP Member Join Date: Oct 2002 Location: On a hilltop in Pa. Posts: 4,479 Likes: 3,576 Liked 7,636 Times in 1,724 Posts	Re: 396 2bl combo Been done, don't work, better off with 2V 350. __________________ Billy Nees 1188 STK, SS I'm OK..........it's everybody else.

02-02-2011, 11:24 AM	#5
Billy Nees VIP Member Join Date: Oct 2002 Location: On a hilltop in Pa. Posts: 4,479 Likes: 3,576 Liked 7,636 Times in 1,724 Posts	Re: 396 2bl combo wade, any time you get into "lower class" Stockers you get into wind issues. The less power you have to work with the worse you are in the wind. Ask some "slow" Stocker guys how much having the track prepped right in front of you slows you down! __________________ Billy Nees 1188 STK, SS I'm OK..........it's everybody else.

02-02-2011, 03:45 PM	#6
mtkawboy Member Join Date: May 2003 Location: Billings Mt Posts: 280 Likes: 171 Liked 54 Times in 18 Posts	Re: 396 2bl combo 40 years ago we stuck a stock 283 4 barrel on our P/S 283/185 4 speed 59 Biscayne and it was worth 1 second also

02-02-2011, 05:34 PM	#7
Jack McCarthy VIP Member Join Date: Feb 2002 Location: lyndon ky. ... louisville area Posts: 1,313 Likes: 27 Liked 440 Times in 111 Posts	Re: 396 2bl combo i have that 2bbl 396 intake ! call if ya need one ! jack 502-558-3450 __________________ Jack McCarthy 3609 STK "the Captain"

02-09-2011, 11:14 AM	#8
dragginwagon Junior Member Join Date: Aug 2010 Posts: 30 Likes: 0 Liked 0 Times in 0 Posts	Re: 396 2bl combo what is the maximum cfm possible from Rochester 2bl 1.25 venturi??

02-09-2011, 03:29 PM	#9
Don Himes Member Join Date: Nov 2001 Location: Port Charlotte, Fla. Posts: 160 Likes: 0 Liked 0 Times in 0 Posts	Re: 396 2bl combo I believe the rating to be 352CFM. Billy (visiting The Don) __________________ Don Himes 2075

02-09-2011, 10:33 PM	#10
dahkahuna Member Join Date: Jul 2006 Location: san dimas , calif Posts: 128 Likes: 0 Liked 5 Times in 3 Posts	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