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Re: Hemi stumble/sputter on starting line ???
[Re: ro23car]
#1493475
09/03/13 01:21 PM
09/03/13 01:21 PM
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Joined: Jan 2003
Posts: 32,394
Quicktree
I Win
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I Win
Joined: Jan 2003
Posts: 32,394
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Quote:
Quote:
Why won't they work?
ok i will rephrase my reply. i know of 5 different people that tried 950hp mecanical carbs and none of them could get them to work. plus my self 4 were on cast crossrams 2 were on sheetmetal intakes.
probably because it way to much, I have seen many 750 double pump carbs on tunnel rams.not to mention dominators on applications that need them.
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Re: Hemi stumble/sputter on starting line ???
[Re: Quicktree]
#1493476
09/03/13 01:49 PM
09/03/13 01:49 PM
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Joined: Jul 2005
Posts: 1,162
s e mich
ro23car
super stock
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super stock
Joined: Jul 2005
Posts: 1,162
s e mich
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Quote:
Quote:
Quote:
Why won't they work?
ok i will rephrase my reply. i know of 5 different people that tried 950hp mecanical carbs and none of them could get them to work. plus my self 4 were on cast crossrams 2 were on sheetmetal intakes.
probably because it way to much, I have seen many 750 double pump carbs on tunnel rams.not to mention dominators on applications that need them.
950's will work if they are vacuum secondaries.
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Re: Hemi stumble/sputter on starting line ???
[Re: ro23car]
#1493477
09/03/13 03:08 PM
09/03/13 03:08 PM
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Joined: Jan 2003
Posts: 32,394
Quicktree
I Win
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I Win
Joined: Jan 2003
Posts: 32,394
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Quote:
Quote:
Quote:
Quote:
Why won't they work?
ok i will rephrase my reply. i know of 5 different people that tried 950hp mecanical carbs and none of them could get them to work. plus my self 4 were on cast crossrams 2 were on sheetmetal intakes.
probably because it way to much, I have seen many 750 double pump carbs on tunnel rams.not to mention dominators on applications that need them.
950's will work if they are vacuum secondaries.
I must be missing something? what does the vac secondary have to do with it? you are only on that circuit for a second.
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Re: Hemi stumble/sputter on starting line ???
[Re: Quicktree]
#1493479
09/03/13 09:53 PM
09/03/13 09:53 PM
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Joined: Jul 2005
Posts: 1,162
s e mich
ro23car
super stock
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super stock
Joined: Jul 2005
Posts: 1,162
s e mich
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Quote:
Quote:
Quote:
Quote:
Quote:
Why won't they work?
ok i will rephrase my reply. i know of 5 different people that tried 950hp mecanical carbs and none of them could get them to work. plus my self 4 were on cast crossrams 2 were on sheetmetal intakes.
probably because it way to much, I have seen many 750 double pump carbs on tunnel rams.not to mention dominators on applications that need them.
950's will work if they are vacuum secondaries.
I must be missing something? what does the vac secondary have to do with it? you are only on that circuit for a second.
yes you are missing something.the secondaries do not open as fast as the mecanicals for one. take a look at the nss hemi cars and see for yourself. i cound not make mecanicals work neither could other people. i footbrake with my 950 vac carbs and have no problem and yes i do have a cast crossram. i know alot of other guys running the crossram carbs on their cars.
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Re: Hemi stumble/sputter on starting line ???
[Re: cudaman1969]
#1493480
09/03/13 09:58 PM
09/03/13 09:58 PM
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Joined: May 2009
Posts: 511
Temperance, MI
68 HEMI GTS
mopar
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mopar
Joined: May 2009
Posts: 511
Temperance, MI
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stop by and see me at norwalk if you haven't got it figured out by then. my pops will be there and he is a damn good carb guy. i can leave off the foot brake at idle with my cross ram, and still go on 100 mile round trip drives and cruises. http://youtu.be/tBwyPmOzqBQ
68 Dart GTS "HEMI" 10.30 @ 131 pump gas street car 3780#
69 Roadrunner 511 six pack 10.92 drive to track street car
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Re: Hemi stumble/sputter on starting line ???
[Re: ro23car]
#1493483
09/03/13 10:49 PM
09/03/13 10:49 PM
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Joined: Feb 2012
Posts: 54
Strongsville, Ohio
Charlie Moore
OP
member
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OP
member
Joined: Feb 2012
Posts: 54
Strongsville, Ohio
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Quote:
wont dale help you?
We have talked to Dale quite a bit. After everything we told him, he said quit looking at the carbs, the problem is somewhere else. I plan on giving these carbs to Dale over the winter. I was told by the previous owner that the Carb Shop had set these up. Oh well.
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Re: Hemi stumble/sputter on starting line ???
[Re: 68 HEMI GTS]
#1493484
09/03/13 10:55 PM
09/03/13 10:55 PM
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Joined: Feb 2012
Posts: 54
Strongsville, Ohio
Charlie Moore
OP
member
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OP
member
Joined: Feb 2012
Posts: 54
Strongsville, Ohio
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Quote:
stop by and see me at norwalk if you haven't got it figured out by then. my pops will be there and he is a damn good carb guy. i can leave off the foot brake at idle with my cross ram, and still go on 100 mile round trip drives and cruises.
I'm sure everyone will be able to find me ay Norwalk. I'll be the guy with the look of total depression. 
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Re: Hemi stumble/sputter on starting line ???
[Re: Charlie Moore]
#1493485
09/03/13 11:50 PM
09/03/13 11:50 PM
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Joined: Jan 2003
Posts: 6,350
Aurora, Oh.
max_maniac
master
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master
Joined: Jan 2003
Posts: 6,350
Aurora, Oh.
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Quote:
Quote:
stop by and see me at norwalk if you haven't got it figured out by then. my pops will be there and he is a damn good carb guy. i can leave off the foot brake at idle with my cross ram, and still go on 100 mile round trip drives and cruises.
I'm sure everyone will be able to find me ay Norwalk. I'll be the guy with the look of total depression.
Hang in there Charlie - I'm sure you will get it figured out soon. Hey maybe get some Eddy carbs on there and have at it  Hope to see you at Norwalk once again and maybe if it aint runnin good you will sell it to me cheap!!! 
Russ
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Re: Hemi stumble/sputter on starting line ???
[Re: ro23car]
#1493487
09/04/13 06:07 AM
09/04/13 06:07 AM
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Joined: Jan 2003
Posts: 32,394
Quicktree
I Win
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I Win
Joined: Jan 2003
Posts: 32,394
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Quote:
Quote:
Quote:
Quote:
Quote:
Quote:
Why won't they work?
ok i will rephrase my reply. i know of 5 different people that tried 950hp mecanical carbs and none of them could get them to work. plus my self 4 were on cast crossrams 2 were on sheetmetal intakes.
probably because it way to much, I have seen many 750 double pump carbs on tunnel rams.not to mention dominators on applications that need them.
950's will work if they are vacuum secondaries.
I must be missing something? what does the vac secondary have to do with it? you are only on that circuit for a second.
yes you are missing something.the secondaries do not open as fast as the mecanicals for one. take a look at the nss hemi cars and see for yourself. i cound not make mecanicals work neither could other people. i footbrake with my 950 vac carbs and have no problem and yes i do have a cast crossram. i know alot of other guys running the crossram carbs on their cars.
he has a lean condition a dp would help. people run them all the time.
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Re: Hemi stumble/sputter on starting line ???
[Re: Charlie Moore]
#1493488
09/04/13 02:20 PM
09/04/13 02:20 PM
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Joined: Aug 2003
Posts: 43,172
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,172
Bend,OR USA
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Are you using the newer Mopar two piece crossram intake? If so is it stock or modified some? I use to tune and drive a stock cast crossram 426 Hemi motor, it didn't like big squirters at all  (it did like either #32 or 35 squirters depending on the track elevation and outside weather conditions  )Bigger squirters would make it hestitate at the hit of the throttle  It did have a 8 inch 4500 RPM stall converter though  I would foot stall it to 2500 to 3000 RPM and it would flash over 4300 RPM at the hit of the throttle As far as the new Mopar two piece crossram you might want to have someone who knows what to do inside them to fix the fuel distribution help you   What I'm trying to say is I don't know anyone that has ran the stock new Mopar two piece make them 60 ft. well That or put a stick shift tranny in it, let the clutch out at 7000 RPM and shift it at 8000 RPM 
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Hemi stumble/sputter on starting line ???
[Re: Dodgem]
#1493493
09/05/13 06:20 PM
09/05/13 06:20 PM
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Joined: Feb 2012
Posts: 54
Strongsville, Ohio
Charlie Moore
OP
member
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OP
member
Joined: Feb 2012
Posts: 54
Strongsville, Ohio
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Quote:
Did you try putting the heaviest secondary springs in and go from there?
We did block off the secondaries from coming in and it made no difference. One thing to think about, this problem only seems to come in after the car warms up. When the motor is cold it will rpm very nice. As soon as it gets up to temp it starts to stumble on acceleration.
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