what 2bbl to use on a 6 cylinder - Ford Truck Enthusiasts Forums



what 2bbl to use on a 6 cylinder

Reply
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 05-14-2006, 04:35 PM
crm318 crm318 is offline
Junior User
Thread Starter
 
Join Date: Mar 2006
Posts: 58
crm318 is starting off with a positive reputation.
what 2bbl to use on a 6 cylinder

i have a 223 that will have a header and a clifford 4bbl intake. i want to use a 2bbl carb and an adapter plate. what would be a good carb for the job? ive been looking at 2100s, autolites, and rochesters. what do yall think?
Reply With Quote
  #2  
Old 05-14-2006, 06:59 PM
200000+F150 200000+F150 is offline
Elder User
 
Join Date: Mar 2003
Location: Hendersonville, TN
Posts: 787
200000+F150 is starting off with a positive reputation.
Some would call it blasphemy, but I think you can't hardly go wrong with a Rochester 2GC. Plentiful, cheap, dependable and efficient. About a billion in the junkyards that nobody wants. $15 kit and you're good to go for about 10 years....
Reply With Quote
  #3  
Old 05-15-2006, 03:28 AM
Col Flashman's Avatar
Col Flashman Col Flashman is offline
Postmaster
 
Join Date: Apr 2000
Location: La Verne, California
Posts: 3,805
Col Flashman has a very good reputation on FTE.Col Flashman has a very good reputation on FTE.Col Flashman has a very good reputation on FTE.
The Rochester 2GC is a good choice, but I've always prefered the Holley over all others.
Reply With Quote
  #4  
Old 05-16-2006, 09:28 AM
blackgtstang blackgtstang is offline
Freshman User
 
Join Date: Nov 2004
Posts: 29
blackgtstang is starting off with a positive reputation.
I used a Holley 500 on my 86 300. Works great, truck runs like a beast!
Reply With Quote
  #5  
Old 05-16-2006, 09:48 AM
Pkupman82's Avatar
Pkupman82 Pkupman82 is online now
Postmaster
 
Join Date: Feb 2003
Location: Muskegon, MI (home)
Posts: 3,357
Pkupman82 has a good reputation on FTE.Pkupman82 has a good reputation on FTE.
I use a Holley 2300 (350 cfm) 2bbl on my 84 300, more power and easier on fuel than the 1bbl.
Reply With Quote
  #6  
Old 05-17-2006, 10:22 PM
broke77f100 broke77f100 is offline
Elder User
 
Join Date: Mar 2006
Location: Slippery Rock, PA
Posts: 605
broke77f100 is starting off with a positive reputation.
why not just use a 4 bbl carb?
Reply With Quote
  #7  
Old 05-18-2006, 02:45 AM
crm318 crm318 is offline
Junior User
Thread Starter
 
Join Date: Mar 2006
Posts: 58
crm318 is starting off with a positive reputation.
its a totally stock 223. i dont know if it could handle a 4bbl in its current condition.
Reply With Quote
  #8  
Old 05-18-2006, 06:49 PM
broke77f100 broke77f100 is offline
Elder User
 
Join Date: Mar 2006
Location: Slippery Rock, PA
Posts: 605
broke77f100 is starting off with a positive reputation.
oh ok i see ur point
Reply With Quote
  #9  
Old 05-18-2006, 08:29 PM
shmoozo shmoozo is offline
Freshman User
 
Join Date: Dec 2003
Posts: 44
shmoozo is starting off with a positive reputation.
Quote:
Originally Posted by crm318
its a totally stock 223. i dont know if it could handle a 4bbl in its current condition.
Actually that shouldn't be a problem so long as the 4 barrel carb is one of the usual vacuum secondary units that has been properly selected and set up and correctly tuned for your application. Keep in mind that the vast majority of the time the engine will only be using the smaller primaries when you're driving around town and generally speaking those are roughly comparable to a modest 2 barrel carb. It's only when you get on it pretty good and hard that the secondaries would open at all, and then only in response to demand.

One possible choice would be the same old Holley 390 CFM carb that so many folks use on their Ford 300's. You might need to make some tuning changes to it to get the best combination of performance and fuel economy, but Holley carbs are pretty common so tuning parts and expertise with them are fairly easy to come by.

On the other hand one of the garden variety 2 barrel carbs like any of the models others here have suggested could also work quite well, assuming it was properly tuned to work well with your particular engine. (Note that at least some amount of carb tuning and set up is likely to be needed no matter what kind of carb you use.)

One unorthodow suggestion I could toss into the mix would be a Quadra-Jet carb. (I can almost hear the shrieks of "BLASPHEMY!" as I write this. ) The Quadra-Jet carbs have the advantage of having very small primaries. That means that your engine could get fuel economy and low-end throttle response of the sort it would get when using a small two barrel carb, but would have plenty of 4 barrel "oomph" when you stomped on the gas because the secondaries would open as needed to increase the amount of air flowing into the engine.



As with any carb you'd need to get it tuned to work with your specific application, but that shouldn't be too difficult. Q-Jets may be less common than Holleys, but they still have a sizable following. Click HERE to see an article that discusses Quadra-Jet carbs. HERE'S a link to another article about them.
Reply With Quote
  #10  
Old 05-19-2006, 09:02 AM
Red2003XLT Red2003XLT is offline
Senior User
 
Join Date: Jun 2004
Posts: 262
Red2003XLT is starting off with a positive reputation.
One unorthodow suggestion I could toss into the mix would be a Quadra-Jet carb.

Any intakes that take the spread-bore and fit the 240-300?
Reply With Quote
  #11  
Old 05-19-2006, 10:48 AM
shmoozo shmoozo is offline
Freshman User
 
Join Date: Dec 2003
Posts: 44
shmoozo is starting off with a positive reputation.
Quote:
Originally Posted by Red2003XLT
Any intakes that take the spread-bore and fit the 240-300?
All you need is a standard 4 barrel intake and an inexpensive adapter. The Clifford intake for the Ford 223 along with their standard 4 barrel adapter and a Quadra-Jet to Squarebore 4 barrel adapter will allow the Quadra-Jet to mount quite easily.

By the way, Quadra-Jets have a reputation for being able to operate properly at far more extreme angles than Holley carbs, which makes them a good choice for trucks that will be used offroad.

Reply With Quote
  #12  
Old 05-21-2006, 01:49 PM
shmoozo shmoozo is offline
Freshman User
 
Join Date: Dec 2003
Posts: 44
shmoozo is starting off with a positive reputation.
I found another useful link to a web page with a lot of links to web pages full of various kinds of info about Quadra-Jet carbs. Some of the links on the page have expired, but a lot of them do still work.

Quadra-Jet carb links page

Also, you may recall that I mentioned that Quadra-Jet carbs have really small primaries, and I found an image that illustrates this fact pretty well. It's a picture of a stripped down throttle body plate from the bottom of a Quadra-Jet carb and you can really see how small the primaries are compared to the secondaries in this image. For reference, the two smaller round holes at the top are the primaries, and the two larger round holes directly below them and partially covered by the jaws of the vise are the secondaries. Here's the link to that image:

Quadra-Jet throttle body plate in a vise

That image is from an article on the Car Craft web site. Here's a link to that article.

Quadra-Jet

Reply With Quote
  #13  
Old 05-21-2006, 03:06 PM
N7ghtwolf N7ghtwolf is offline
Senior User
 
Join Date: Apr 2006
Location: Savannah, GA
Posts: 339
N7ghtwolf is starting off with a positive reputation.
Quote:
Originally Posted by Pkupman82
I use a Holley 2300 (350 cfm) 2bbl on my 84 300, more power and easier on fuel than the 1bbl.
Would a 2bbl really be easier on fuel than a 1bbl or a 4bbl?
Reply With Quote
  #14  
Old 05-21-2006, 03:52 PM
shmoozo shmoozo is offline
Freshman User
 
Join Date: Dec 2003
Posts: 44
shmoozo is starting off with a positive reputation.
Quote:
Originally Posted by N7ghtwolf
Would a 2bbl really be easier on fuel than a 1bbl or a 4bbl?
That depends on a lot of factors including the types of the intake manifolds used, the specific ways the carbs have been tuned, which carbs are used, etc.. There's no single correct answer to that question.
Reply With Quote
  #15  
Old 06-14-2006, 04:54 PM
jlm_1962 jlm_1962 is offline
New User
 
Join Date: Jun 2006
Posts: 2
jlm_1962 is starting off with a positive reputation.
adapter plate

which adapter plate should I use to put a two barrel holley 500 on a 300 6 cyl. summit and trans adpt offera couple different sizes
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
4bbl vs 2bbl chefcharles 1967 - 1972 F-100 & Larger F-Series Trucks 1 12-09-2014 01:11 PM
1bbl to 2bbl?? Bwillden24 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 6 12-20-2010 11:07 PM
stock 2bbl intake vs 4bbl intake...difference?? icuhatn99 Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460) 1 02-05-2006 11:35 PM
What Carb for 223-4bbl intake?? cudaz101 Ford Inline Six, 200, 250, 4.9L / 300 0 10-03-2005 05:28 AM
351W: 2bbl or 4bbl? calazo Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) 3 06-04-2004 04:12 PM


Go Back   Ford Truck Enthusiasts Forums >

Tags
1970, 250, 2bbl, 2gc, 300, adaptor, bbl, carb, cyl, cylinder, eng, ford, kit, mustang, picture, stripped

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump


All times are GMT -5. The time now is 09:17 PM.


This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.