SUPPORT OUR SPONSOR

Go Back   Club Cobra > Club Cobra Tech Areas > Shop Talk

Welcome to Club Cobra!  The World's largest non biased Shelby Cobra related site!

  •  » Representation from nearly all Cobra/Daytona/GT40 manufacturers
  •  » Help from all over the world for your questions
  •  » Build logs for you and all members
  •  » Blogs
  •  » Image Gallery
  •  » Many thousands of members and nearly 1 million posts! 

YES! I want to register an account for free right now!  p.s.: For registered members this ad will NOT show

MMG Superformance
Nevada Classics
Main Menu
Nevada Classics
Nevada Classics
Keith Craft Racing
Advertise at CC
Banner Ad Rates
Keith Craft Racing
MMG Superformance
Keith Craft Racing
August 2022
S M T W T F S
  1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16 17 18 19 20
21 22 23 24 25 26 27
28 29 30 31      
  #1 (permalink)  
Old 10-16-2006, 04:51 PM
CC Member
Visit my Photo Gallery

 
Join Date: Jul 2006
Location: Dobbs Ferry, NY
Cobra Make, Engine: ERA, 351
Posts: 114
Not Ranked     
Smile double pumper or vacum

Hi,
I have recently been going through some issue with my Holley, which I suspect are due some bad fuel. I managed to clean it out and adjust it, and the car is now running OK. The carburator is a four barrell 750 cfm Holley 3310 with vacum secondaries. I had a former Northeast Busch mechanic go over the car, and he suggested I should go with a Holley double pumper instead. When I asked Ford and Holley, they both said the 3310 is perfect for my application (street) and suggested I should get a rebuild kit instead. Does anyone have any experience with vacum secondaries compared to a double pumper they can share? What are the pos and cons of one vs. other?
Thanks.
Irv
Reply With Quote
Sponsored Links
Sponsored Links
  #2 (permalink)  
Old 10-16-2006, 05:37 PM
sharpe 1's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Nov 2002
Cobra Make, Engine: Midstates,SBF 357
Posts: 418
Not Ranked     
Default

a VACUUM SECONDARY CARB IS MORE USER FRIENDLY ON THE STREET.
Reply With Quote
  #3 (permalink)  
Old 10-16-2006, 05:40 PM
Dwight's Avatar
Senior Club Cobra Member
Visit my Photo Gallery

 
Join Date: May 2001
Location: Florence, AL
Cobra Make, Engine: RCR GT 40 & 1966 Fairlane 390 5 speed
Posts: 4,511
Not Ranked     
Default Double pumpers "the holy grail of carbs"

Listen to Ford and Holley. You have a street car not a 9000 rpm race car. Dwight
__________________
''Life's tough.....it's even tougher if you're stupid.'' ~ John Wayne
"Happiness Is A Belt-Fed Weapon"
life's goal should be; "to be smarter than inanimate objects"
Reply With Quote
  #4 (permalink)  
Old 10-17-2006, 08:23 AM
Zoom This's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Oct 2003
Location: Bainbridge Island, WA
Cobra Make, Engine:
Posts: 709
Not Ranked     
Default

Irv....your choice of a carb is based primarily on your use of the car and the mods you have done to the motor. If you have a 500+ hp big block, a Holley 4150 may be a better choice. If you are running a mild motor in your car, there is nothing wrong with a good running 3310 type. As said earlier, vacuum secondaries are very street friendly. The Holley 4150 carbs are little more flexible to modify than the 3310's. Good luck.
Reply With Quote
  #5 (permalink)  
Old 10-17-2006, 04:12 PM
CC Member
Visit my Photo Gallery

 
Join Date: Jul 2006
Location: Dobbs Ferry, NY
Cobra Make, Engine: ERA, 351
Posts: 114
Not Ranked     
Default thanks

Hi,
Appreciate the advice. My car has a 351 that has been dynoed at about 400 hp a 90 degree day. My use of the car so far has been street so I will stick with the 3310.
Irv
Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -7. The time now is 08:42 PM.


Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2022, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: CC Policy