Holley Vs. Quadrajet - 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 05-19-2010, 12:00 PM
Registered User
 
Last photo:
Join Date: Apr 2010
Location: TEXAS!!!
Posts: 7
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Holley Vs. Quadrajet

thanks for looking at my question. my question is which would be preferred for a (at the moment) stock 69 impala 4bbl 350. holley 4160 or stock quadrajet. i got the holley over 5years ago so im positive it needs rebuild but looks very clean and the quadrajet has been rebuilt with a stock kit, but it sat uncovered over 2 years and was seized with gunk up until bout 2 months ago. i had the kit installed by a brother in law and is currently on the car. it fires up, but havent had time to tune. I just dont want to mess with anything if i dont have to. i know theres fans of both makes of carbs. dont have enough experience with moding or rebuilding to have an opinion. usually would just replace parts but now am interested in rebuilding. P.S. i have read through other posts that were similar, so I can say that my car is mainly a sunday beer run car. wont see the strip nor showroom any time soon. Thanks in advance.

    Advertisement

Last edited by chekemtz; 05-19-2010 at 01:23 PM.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 05-19-2010, 01:55 PM
cool rockin daddy's Avatar
1.21 giga-watts???!!!!
 
Join Date: Aug 2003
Location: wherever cool cars are
Posts: 1,535
Wiki Edits: 0

Thanks: 0
Thanked 3 Times in 3 Posts
Qjet all the way.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 05-19-2010, 02:17 PM
Everything is HAMMER!
 
Last photo:
Join Date: Jan 2006
Location: belleville, Michigan
Age: 25
Posts: 348
Wiki Edits: 0

Thanks: 2
Thanked 1 Time in 1 Post
Quadrajet for two reasons: 1. You already have it. 2. Qjets typically provide better fuel economy while remaining competitive performance wise.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 05-19-2010, 02:54 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
QuadraJet hands down. It's not as easy to work on as the Holley but the throttle response for street driving and better gas mileage make it worth the effort. Plus there's nothing like the sound of a Q-Jet at WOT.

Sounds like both carbs need some TLC though. If you don't have any experience and plan to do it yourself then start with the Holley, it's simpler to work on. That's assuming the throttle shafts aren't loose. If that's the case save yourself some grief and buy a new or rebuilt carb. I've had good luck with the Summit QuadraJets.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 05-19-2010, 02:59 PM
How fast is fast enough?
 
Last photo:
Join Date: Jun 2005
Location: St. Louis, MO
Age: 28
Posts: 8,660
Wiki Edits: 0

Thanks: 16
Thanked 277 Times in 259 Posts
At this level any properly sized carb will perform about the same. If you have a Qjet and a Qjet intake then use that. If you've never rebuilt any carb one is just as hard as the other. What it would come down to me is cost and since you alreay have the Qjet setup just refreshing that one would be the cheapest and make the most sense.

The most tedious part of rebuilding it will probably be cleaning it. Purple Power and a denture brush should be about the cheapest easiest thing you can use for that.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 05-19-2010, 04:13 PM
Registered User
 
Last photo:
Join Date: Apr 2007
Location: Seattle, Wa
Posts: 6,680
Wiki Edits: 0

Thanks: 3
Thanked 403 Times in 348 Posts
Quote:
Originally Posted by chekemtz
thanks for looking at my question. my question is which would be preferred for a (at the moment) stock 69 impala 4bbl 350. holley 4160 or stock quadrajet. i got the holley over 5years ago so im positive it needs rebuild but looks very clean and the quadrajet has been rebuilt with a stock kit, but it sat uncovered over 2 years and was seized with gunk up until bout 2 months ago. i had the kit installed by a brother in law and is currently on the car. it fires up, but havent had time to tune. I just dont want to mess with anything if i dont have to. i know theres fans of both makes of carbs. dont have enough experience with moding or rebuilding to have an opinion. usually would just replace parts but now am interested in rebuilding. P.S. i have read through other posts that were similar, so I can say that my car is mainly a sunday beer run car. wont see the strip nor showroom any time soon. Thanks in advance.
Depends on you proclivities and abilities. The Qjet will deliver better mileage than a Holley and when set up be someone knowledgeable and patient will deliver equivalent performance. But in the the hands of someone not experienced in carburetors in general and Qjets in particular they can be really hard to set up and very frustrating as they are very sensitive to the details of each and every part. Parts are harder to come by than the Holley. These are really great carbs, but you've got to understand them, they don't respond very well to small errors in their set up.

The Holley is easier to set up and get it to work mostly because it works pretty well even when not built with particular care. It is much more tolerant of someone still learning about carbs. Besides, parts are available everywhere, it would seem in every grocery store. These are also great carbs and will respond in knowledgeable hands, but they also function OK over a very wide range of not quite right set ups.

Bogie
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 05-19-2010, 04:51 PM
artsvettes's Avatar
Registered User
 
Last photo:
Join Date: Aug 2006
Location: New Jersey
Posts: 163
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
I love my Q-jets
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 05-19-2010, 08:18 PM
Registered User
 
Last photo:
Join Date: Feb 2004
Location: puerto rico
Posts: 242
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I rebuilt a q-jet for my old pickup and had to fab a tool for adjusting the float height. it was a simple 14 inch socket 14inch well. and a short peice of 14 copper tubing smashed with a hammer to fit over the small flat head screw driver tipped screw. took some trial end error but it finally worked very well.
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 05-20-2010, 12:00 AM
beebster's Avatar
Registered User
 
Join Date: May 2010
Location: Aurora,illinois
Posts: 2
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
qjet

quadrajet all the way!
Every Holley i ever had seemed to waste alot of gas.
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 05-20-2010, 07:31 AM
302 Z28's Avatar  
Last photo:
Join Date: May 2003
Location: North Texas
Posts: 10,837
Wiki Edits: 0

Thanks: 1
Thanked 86 Times in 73 Posts
No doubt about it, a properly overhauled, setup QJ is the ticket. Unfortunatly there are too many shade tree mechanics who think they are QJ experts. I would venture a guess that there are very few QJ's (short of being new or professionally overhauled) out there that meet the above criteria.

Vince
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 05-20-2010, 08:18 AM
cobalt327's Avatar
WFO
 
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Location: Atlanta
Age: 59
Posts: 5,037
Wiki Edits: 1616

Thanks: 128
Thanked 597 Times in 546 Posts
Quote:
Originally Posted by chekemtz
which would be preferred
The only reason I would consider a Holley over a Q-jet, is if the Q-jet required an adapter to fit a square bore intake manifold. The adapters suck. But the Holley carb offers no performance advantage. Nor an economy edge. Or response/off idle performance. The Q-jet is a good carb, and unless yours is not working right I would run it as-is.

If the plugs or seat of the pants says there's more to be done, describe the symptoms and we'll give you some suggestions.

Don't forget the ignition during this- the timing curve can effect the way the car runs a LOT.
Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 05-20-2010, 10:00 AM
ChevelleSS_LS6's Avatar
Jeep XJ and a Javelin
 
Last wiki edit: Compression test
Last journal entry: August 9, part III
Last photo:
Join Date: Dec 2001
Location: Grand Rapids, Michigan
Age: 28
Posts: 1,610
Wiki Edits: 7

Thanks: 3
Thanked 0 Times in 0 Posts
Q-jet.

grandpa worked at GM during the day, and fixed cars up at night. Hope he gets to teach me how to tune a q-jet. From what he and my uncle (grandpa's shop assistant) told me he could get the carbs just right and the cars would run like hell. In a good way.
Reply With Quote Quick reply to this message
  #13 (permalink)  
Old 05-20-2010, 11:04 AM
Registered User
 
Last photo:
Join Date: Apr 2010
Location: TEXAS!!!
Posts: 7
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
thanks for ALL the input yall. All info is apprecieated. I'll keep checkin in. Im trying to get pics up. Thanks again and feel free to check back if anything else comes to mind, cause I know I'll proly re-read the replys a few times(got a short attention span). Peace...
Reply With Quote Quick reply to this message
  #14 (permalink)  
Old 10-27-2010, 04:54 PM
ponchopower48's Avatar
Registered User
 
Join Date: Oct 2010
Location: Albany, NY
Age: 21
Posts: 32
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
im in the same boat as you man im rebuildin a q jet off a 74 pontiac 400 and i dont know a lot about carbs
Reply With Quote Quick reply to this message
  #15 (permalink)  
Old 10-30-2010, 04:19 PM
Berliner Bel Air's Avatar
Beyond the Sea
 
Last photo:
Join Date: Feb 2004
Location: Berlin, Germany
Age: 51
Posts: 171
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I don't know about Holleys, I used to use Edelbrocks, not anymore. Qjets only. Far better carbs. Better throttle response, better starting, better economy, don't have smelly exhaust.
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, Edelbrock or Quadrajet. Opening Can of Worms. 58lincoln Engine 8 08-13-2009 07:09 PM
Which carb Quadrajet or Holley? 67firebird Hotrodding Basics 24 07-14-2008 03:30 AM
Holley or Quadrajet longt Engine 23 07-11-2008 04:52 AM
Quadrajet or Holley???? colincamaro Engine 6 04-18-2007 04:59 PM
holley / quadrajet question mshellw Engine 3 04-20-2003 04:08 AM


All times are GMT -6. The time now is 08:34 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.