850 double pumper with stick car
#3098441
11/30/22 04:59 PM
11/30/22 04:59 PM
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Joined: Oct 2003
Posts: 4,013
South Park, Pa.
68LAR
OP
master
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OP
master
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South Park, Pa.
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Is anyone having or had had issues with this Holley carb? I understand the issue with Venturi size. How was it remedied?
4 speed street legal. Best time 10.99 @ 124 mph on 93 octane pump gas @ 3926# total weight
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Re: 850 double pumper with stick car
[Re: 68LAR]
#3098466
11/30/22 06:22 PM
11/30/22 06:22 PM
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Joined: Aug 2003
Posts: 43,173
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,173
Bend,OR USA
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Is anyone having or had had issues with this Holley carb? I understand the issue with Venturi size. How was it remedied? Which version? List number? I have changed many Holley D.P. with the 50 CC secondary pumps to 30 CC pumps along with the proper linkages to get them to 60 Ft. better, stock they shoot to long and too much loading up the motor for the first second to first three seconds, depending on the squirter size and how the rear pump arm is adjusted   
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: 850 double pumper with stick car
[Re: Cab_Burge]
#3098470
11/30/22 06:33 PM
11/30/22 06:33 PM
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Joined: Oct 2003
Posts: 4,013
South Park, Pa.
68LAR
OP
master
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OP
master
Joined: Oct 2003
Posts: 4,013
South Park, Pa.
|
Is anyone having or had had issues with this Holley carb? I understand the issue with Venturi size. How was it remedied? Which version? List number? I have changed many Holley D.P. with the 50 CC secondary pumps to 30 CC pumps along with the proper linkages to get them to 60 Ft. better, stock they shoot to long and too much loading up the motor for the first second to first three seconds, depending on the squirter size and how the rear pump arm is adjusted . HP versions with the separate idle air bleed adjustment.
4 speed street legal. Best time 10.99 @ 124 mph on 93 octane pump gas @ 3926# total weight
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Re: 850 double pumper with stick car
[Re: 68LAR]
#3098475
11/30/22 06:43 PM
11/30/22 06:43 PM
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Joined: Oct 2003
Posts: 4,013
South Park, Pa.
68LAR
OP
master
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OP
master
Joined: Oct 2003
Posts: 4,013
South Park, Pa.
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Here’s why the question. One friend has a small block Auto. He tried the carb in question. Off idle boog was horrendous. Now he’s bad mouthy that carb. Another friend, with a stick car, wants to try a double pumper. The 850 suits his engine needs, but he had bin talking to the other guy and getting bad feed back. I’m looking for info, one way or another.
4 speed street legal. Best time 10.99 @ 124 mph on 93 octane pump gas @ 3926# total weight
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Re: 850 double pumper with stick car
[Re: 68LAR]
#3098479
11/30/22 07:10 PM
11/30/22 07:10 PM
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Joined: Jun 2014
Posts: 3,180
Md.
carnut68
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master
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Md.
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Off idle bog ..too much T Slot exposure. Any holes in the throttle plates?
America First!
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Re: 850 double pumper with stick car
[Re: carnut68]
#3098481
11/30/22 07:17 PM
11/30/22 07:17 PM
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Joined: Oct 2003
Posts: 4,013
South Park, Pa.
68LAR
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master
Joined: Oct 2003
Posts: 4,013
South Park, Pa.
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Off idle bog ..too much T Slot exposure. Any holes in the throttle plates? . As far as I know, it was a stock carb, with an automatic. I’m not looking for the possible cause, as much as to what you guys did to fix it.
4 speed street legal. Best time 10.99 @ 124 mph on 93 octane pump gas @ 3926# total weight
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Re: 850 double pumper with stick car
[Re: carnut68]
#3098482
11/30/22 07:18 PM
11/30/22 07:18 PM
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Joined: Oct 2006
Posts: 1,264
New York, USA
Chargerfan68
pro stock
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pro stock
Joined: Oct 2006
Posts: 1,264
New York, USA
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Off idle bog ..too much T Slot exposure. Any holes in the throttle plates? If it has what is called “idle ease” adjustment, there are no holes in throttle plates from factory. Under the air cleaner stud, there is an air adjustment screw. (Center of carb in venturii are four small air bypass holes.
1.50 60Ft. , 10.75@ 127MPH Hauling 3900 LBS.
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Re: 850 double pumper with stick car
[Re: Chargerfan68]
#3098505
11/30/22 08:31 PM
11/30/22 08:31 PM
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Joined: Oct 2003
Posts: 4,013
South Park, Pa.
68LAR
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South Park, Pa.
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From what I understand, the issue was/is, with the venturi size. This causing no velocity and thus a poor signal. With that, I'm thinking it causes a lean off idle mixture, not an over rich mixture. Am I off base here??? Make me smart! Also, has this been addressed with, lets say a Quick Fuel carb? The Brawler for example?
4 speed street legal. Best time 10.99 @ 124 mph on 93 octane pump gas @ 3926# total weight
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Re: 850 double pumper with stick car
[Re: Chargerfan68]
#3098507
11/30/22 08:34 PM
11/30/22 08:34 PM
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Joined: Jun 2014
Posts: 3,180
Md.
carnut68
master
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master
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Md.
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Off idle bog ..too much T Slot exposure. Any holes in the throttle plates? If it has what is called “idle ease” adjustment, there are no holes in throttle plates from factory. Under the air cleaner stud, there is an air adjustment screw. (Center of carb in venturii are four small air bypass holes. You are right, that would be an ultra HP 850.
America First!
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Re: 850 double pumper with stick car
[Re: 68LAR]
#3098532
11/30/22 09:56 PM
11/30/22 09:56 PM
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Joined: Dec 2021
Posts: 1,126
Loudoun County, VA
Brad_Haak
super stock
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super stock
Joined: Dec 2021
Posts: 1,126
Loudoun County, VA
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What's the list number on the carb? Is it 80804 by chance? That's an 850 H/XP model known for a pretty crappy out-of-the-box tune.
2021 Challenger 6.4L Scat Pack 1320
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)
1973 Challenger 452 ci street/strip [2008]
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
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Re: 850 double pumper with stick car
[Re: Brad_Haak]
#3098548
11/30/22 11:21 PM
11/30/22 11:21 PM
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Joined: Oct 2003
Posts: 4,013
South Park, Pa.
68LAR
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master
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OP
master
Joined: Oct 2003
Posts: 4,013
South Park, Pa.
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What's the list number on the carb? Is it 80804 by chance? That's an 850 H/XP model known for a pretty crappy out-of-the-box tune. . I don’t know the list number, but what you describe is pretty much what I remember. Was there any fix for those issues? Are other 850’s a better choice?
4 speed street legal. Best time 10.99 @ 124 mph on 93 octane pump gas @ 3926# total weight
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Re: 850 double pumper with stick car
[Re: 68LAR]
#3098558
12/01/22 12:11 AM
12/01/22 12:11 AM
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Joined: Dec 2004
Posts: 10,553
Rittman Ohio
fourgearsavoy
I Live Here
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I Live Here
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Posts: 10,553
Rittman Ohio
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Larry I have a Quickfuel annular 1050 on my Savoy and it was a huge improvement over the downleg booster body I was using before. The throttle response is instant with the annular booster. Gus 
64 Plymouth Savoy
493 Indy EZ's by Nick at Compu-Flow
5-Speed Richmond faceplate Liberty box
Dana 60
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Re: 850 double pumper with stick car
[Re: fourgearsavoy]
#3098586
12/01/22 08:05 AM
12/01/22 08:05 AM
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Joined: Oct 2003
Posts: 4,013
South Park, Pa.
68LAR
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OP
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South Park, Pa.
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Larry I have a Quickfuel annular 1050 on my Savoy and it was a huge improvement over the downleg booster body I was using before. The throttle response is instant with the annular booster. Gus . Gus, I have the same carb in my Roadrunner. The question about the 850 is for a friend of mine. I’m wanting to make sure that the other 850’s other than the ultra xp’s won’t have the same problems I’m leaning towards the Quickfuel, as I’ve had good success with mine.
4 speed street legal. Best time 10.99 @ 124 mph on 93 octane pump gas @ 3926# total weight
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Re: 850 double pumper with stick car
[Re: 68LAR]
#3098593
12/01/22 08:59 AM
12/01/22 08:59 AM
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Joined: Dec 2021
Posts: 1,126
Loudoun County, VA
Brad_Haak
super stock
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super stock
Joined: Dec 2021
Posts: 1,126
Loudoun County, VA
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You gotta be careful about simply using the number "850" to describe a carb these days. Even Holley isn't consistent with the venturi & throttle bore sizes they have with "850" carbs.
Holley
- traditional 850 dp - 1.56 x 1.75
- original "1000 HP" - 1.56 x 1.75
- original "950 HP" - 1.38 x 1.75
- "850 Street HP" - 1.56 x 1.68
- "950 Street HP" - 1.56 x 1.75
- current 850 H/XP - 1.56 x 1.75 (850 Track Warrior, too)
- current 950 H/XP - 1.60 x 1.75
Quick Fuel / Brawler / Proform "race" carbs (no choke)
- 850 - 1.40 x 1.75
- 950 - 1.45 x 1.75
- 1000 - 1.50 x 1.75 (Quick Fuel only; discontinued)
- 1050 - 1.58 x 1.75
2021 Challenger 6.4L Scat Pack 1320
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)
1973 Challenger 452 ci street/strip [2008]
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
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Re: 850 double pumper with stick car
[Re: hemienvy]
#3098612
12/01/22 10:26 AM
12/01/22 10:26 AM
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Joined: Dec 2021
Posts: 1,126
Loudoun County, VA
Brad_Haak
super stock
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super stock
Joined: Dec 2021
Posts: 1,126
Loudoun County, VA
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List # 9380 is an 850 with annular boosters, flows less than 850. Yeah... but I was trying to simplify the current labeling issue, not get into the diff's tween booster configurations that also add to the confusion. But, you're right in that the type / style of booster can have a direct impact on the peak airflow, too.
2021 Challenger 6.4L Scat Pack 1320
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)
1973 Challenger 452 ci street/strip [2008]
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
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Re: 850 double pumper with stick car
[Re: Brad_Haak]
#3098646
12/01/22 12:37 PM
12/01/22 12:37 PM
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Joined: Oct 2003
Posts: 4,013
South Park, Pa.
68LAR
OP
master
|
OP
master
Joined: Oct 2003
Posts: 4,013
South Park, Pa.
|
You gotta be careful about simply using the number "850" to describe a carb these days. Even Holley isn't consistent with the venturi & throttle bore sizes they have with "850" carbs.
Holley
- traditional 850 dp - 1.56 x 1.75
- original "1000 HP" - 1.56 x 1.75
- original "950 HP" - 1.38 x 1.75
- "850 Street HP" - 1.56 x 1.68
- "950 Street HP" - 1.56 x 1.75
- current 850 H/XP - 1.56 x 1.75 (850 Track Warrior, too)
- current 950 H/XP - 1.60 x 1.75
Quick Fuel / Brawler / Proform "race" carbs (no choke)
- 850 - 1.40 x 1.75
- 950 - 1.45 x 1.75
- 1000 - 1.50 x 1.75 (Quick Fuel only; discontinued)
- 1050 - 1.58 x 1.75
Thanks guys, I think I have my answer.
4 speed street legal. Best time 10.99 @ 124 mph on 93 octane pump gas @ 3926# total weight
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