carb. for a 283 - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 04-30-2011, 01:49 PM
Registered User
 
Last photo:
Join Date: Oct 2010
Location: az
Posts: 204
Wiki Edits: 0

Thanks: 5
Thanked 0 Times in 0 Posts
carb. for a 283

I`ve got a stock 283 in 56 chev. it has an old rochester with no choke except a rod out of manifold. I want to get a carb. that has at least a choke to adjust by turning left or right for tension, and it would be nice to have a vacuum pull off too. I was told that I have the small manifold bolt pattern on this 2 bbl. setup. Can you folks recomend a carb. ? Can I get a different manifold plate adaptor, or? Don`t care to spend much money on this. Thanks

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 04-30-2011, 02:01 PM
seawolf18's Avatar
Registered User
 
Last photo:
Join Date: Sep 2009
Location: South Dakota
Posts: 34
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Do you want to stay with a two barrel, or go four barrel carb?
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 04-30-2011, 03:59 PM
Registered User
 
Last photo:
Join Date: Oct 2010
Location: az
Posts: 204
Wiki Edits: 0

Thanks: 5
Thanked 0 Times in 0 Posts
I would like to get decent gas mileage, so I guess I should stick with a 2bbl.
Again, I want to keep the cost down. Thanks
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 04-30-2011, 06:47 PM
Registered User
 
Last photo:
Join Date: Jan 2007
Location: canada
Posts: 564
Wiki Edits: 0

Thanks: 0
Thanked 3 Times in 3 Posts
a properly tuned qjet can get better fuel mileage then a 2 bbl

Last edited by va4cqd; 04-30-2011 at 07:11 PM.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 04-30-2011, 06:53 PM
techinspector1's Avatar
Senior Curmudgeon
 
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Hemet, California, USA
Age: 72
Posts: 12,932
Wiki Edits: 326

Thanks: 758
Thanked 1,004 Times in 844 Posts
Quote:
Originally Posted by va4cqd
a properly tubed qjet can get better fuel mileage then a 2 bbl
Correct, the primary venturis and throttle bores of the Quadrajet are smaller than those of the 2-bbl. As long as you keep your foot out of the secondaries, a Quadrajet is about as good as it gets for fuel mileage.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 04-30-2011, 06:59 PM
Registered User
 
Last photo:
Join Date: Dec 2010
Location: williamston sc
Posts: 319
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
You could scout your local junk yards and try to find a 2gc with the thermo choke.Not hard to rebuild at all.If you find one just check the throttle plate shaft to see if it is worn.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 04-30-2011, 07:16 PM
Registered User
 
Last photo:
Join Date: Oct 2010
Location: az
Posts: 204
Wiki Edits: 0

Thanks: 5
Thanked 0 Times in 0 Posts
Hey Techinspector1, I am also in AZ. and would like to know where I could get a quadrajet for my 283 that is not too costly. What would I need to bolt up to my manifold? I was told I have a small bolt pattern on my 283. Thanks for any help from you members.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 04-30-2011, 07:18 PM
Registered User
 
Last photo:
Join Date: Jan 2007
Location: canada
Posts: 564
Wiki Edits: 0

Thanks: 0
Thanked 3 Times in 3 Posts
you need a spreadbore 4 barrel intake
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 04-30-2011, 07:18 PM
Registered User
 
Last photo:
Join Date: Oct 2010
Location: az
Posts: 204
Wiki Edits: 0

Thanks: 5
Thanked 0 Times in 0 Posts
PS, I can rebuild the qjet myself if I need to. Thanks
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 04-30-2011, 07:28 PM
Registered User
 
Last photo:
Join Date: Oct 2010
Location: az
Posts: 204
Wiki Edits: 0

Thanks: 5
Thanked 0 Times in 0 Posts
ok, dumb me i forgot i need to change manifold, so i will keep looking for a 2bbl. what years or what carbs would fit my 283 manifold? thanks
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 04-30-2011, 07:34 PM
Registered User
 
Last photo:
Join Date: Jan 2007
Location: canada
Posts: 564
Wiki Edits: 0

Thanks: 0
Thanked 3 Times in 3 Posts
you can probably find a stock 4 bbl manifold for like $20
Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 04-30-2011, 07:56 PM
Hippie's Avatar
Analog man in a digital world.
 

Last journal entry: HEI comparison.
Last photo:
Join Date: May 2003
Posts: 2,255
Wiki Edits: 0

Thanks: 3
Thanked 5 Times in 5 Posts
If you have a "rod" coming out of the manifold it sounds like you have a divorced choke which dates your intake and carb from around 1966 to about 1977 and your carb is a Rochester 2GC. A hand choke version was available on trucks through 1966 and '65 and older passenger car versions had a hot air choke that fed off a tube from the exhaust manifold. At one time you could get kits to convert those to electric choke. If you did some searching you might find a reman. carb and one of the choke conversion kits. During the 70's and 80's Holley had an Economaster carb that was a direct replacement for the 2GC. NOS Economasters pop up on eBay occasionally. The 2G ( no choke ) and 2GC are getting easier to find parts for with the popularity of traditional rods as they were used on many multi-carb setups and some new goodies are being produced again.

Personally I'd ditch the 2 bbl. for Q-Jet or 450 spreadbore Holley on an iron Q-Jet intake or a '66 cast iron intake for a Holley or Carter AVS with a Holley R-8007 390cfm electric choke 4160 series 4 bbl. It will run better and get better mileage and the secondaries can be adjusted to delay the opening. The Q-Jet's secondaries can be locked out all together with the air valve adjustment.
Reply With Quote Quick reply to this message
  #13 (permalink)  
Old 05-01-2011, 08:45 AM
Registered User
 
Last photo:
Join Date: Oct 2010
Location: az
Posts: 204
Wiki Edits: 0

Thanks: 5
Thanked 0 Times in 0 Posts
Thanks Hippie and others for the good info. I wish I could find a $20 intake and $75 Qjet or holly, but I live in a realative small town north of PHX. with one wrecking yard and no cars in the 60 0r 70s range. And not knowing what to ask for on ebay has gotten me burnt a couple times. I guess I`ll look for an econimizer on ebay. Thanks
Reply With Quote Quick reply to this message
  #14 (permalink)  
Old 05-01-2011, 06:03 PM
willowbilly3's Avatar
Member
 

Last journal entry: Body mods
Last photo:
Join Date: Jun 2004
Location: Black Hills, South Dakota
Age: 61
Posts: 1,208
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by techinspector1
Correct, the primary venturis and throttle bores of the Quadrajet are smaller than those of the 2-bbl. As long as you keep your foot out of the secondaries, a Quadrajet is about as good as it gets for fuel mileage.
That was always a great theory but never worked for me, oh wait, that was because my size 13 just gets heavy.
I used to like to find the old 2G from a pickup so I had a good manual choke and didn't have to mess with the problematic and poorly engineered automatic chokes of that era. I still pick them up every time I see one, probably have a half a bushel of them around here somewhere.
Reply With Quote Quick reply to this message
  #15 (permalink)  
Old 05-01-2011, 06:30 PM
techinspector1's Avatar
Senior Curmudgeon
 
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Hemet, California, USA
Age: 72
Posts: 12,932
Wiki Edits: 326

Thanks: 758
Thanked 1,004 Times in 844 Posts
I haven't used an automatic choke since the first one I ever had. Hated it and changed to a manual. Never looked back. If you install a microswitch on the carb that is actuated by the choke rod, then you can install a small colored bulb of your choice (Radio Shack) on the dash to remind you that the choke is on. You can even incorporate a flasher in the line if you're really unconscious like me.
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
holley carb backfires threw carb talleyho Engine 61 05-25-2011 10:03 AM
Will adding a 1 inch carb spacer affect carb tune? eric32 Engine 29 02-09-2010 12:13 AM
Quadrajet Carb rebuild....parts interchange with another junk carb? Warrant Engine 2 07-31-2006 10:44 PM
Any problems spraying carb cleaner in my carb while its on the motor? batman09 Engine 11 11-29-2005 07:49 AM
Which Carb Stevestang1966 Engine 3 03-23-2003 03:51 AM


All times are GMT -6. The time now is 04:32 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.