Hot Rod Forum : Hotrodders Bulletin Board - Reply to Topic -- 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> Quadrajet or Holley????
User Name
lost password?   |   register now

Thread: Quadrajet or Holley???? Reply to Thread
Send Trackbacks to (Separate multiple URLs with spaces) :

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:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


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.

Additional Options
Miscellaneous Options

Topic Review (Newest First)
04-18-2007 04:59 PM
Rob Keller the Q jet will give you better mileage Provided you stay out of the back barrels & there is no waiting time as the Holly for the Vacuum secondaries to open.

That is MHO

04-18-2007 04:44 PM
Rough-Rider the smaller primarys on the q jet will give u nice crisp acceleration, and if tuned properly awesome idle and street performance. where as the holley you will lose some drivability. you may get a bit more power from the holley just because its easier to tune but if u take your time and get a detailed book, u'll be happy you chose the quad.
04-18-2007 06:12 AM
302 Z28 I agree with 327nut, the QJ if set up properly will outperform the Holley Street Avenger (are all single pumpers) both in fuel economy and WOT. Off idle response on the QJ is vastly superior to the Holley.

04-17-2007 11:14 PM
327NUT Colin, to start with the Holley Street Avenger is not a double pumper, its a 570 or 670 (for your application) elec. choke, vacuum secondary carb, you don't want a DP for the street. The quadrajet is an xlnt carb and not "hell to tune" if you take your time and know what you're doing. Either carb will work for you IF tuned properly. Another source for quadrajets is "I Five Components" (800) 526-9952. They will build you a vehicle specific carb for around $280....but you need to know your engine specs. Don't just tell them its got around 350 hp, most guys way over estimate their engines hp. If you're looking for mileage and who isn't I'd get the q-jet.
04-17-2007 10:10 PM
SDLuck Jet q-jet are very good carbs,if you give them your engine info the can makeup a carb for you setup. Holleys are good also
04-17-2007 10:08 PM
FiveFeezy Get the Holley, or an Edelbrock. Quadrajets (aka Quadrajunks) are hell to tune. My buddy loves them, but he also loves to spend forever adjusting them.
04-17-2007 09:04 PM
Quadrajet or Holley????

Hello i have a 1967 camaro with a modified 2 bolt 350 producing about 350 hp give or take a few horses. I need a new carb and was wondering whether i should get a jet performance products stage 2 quadrajet or a holley street avenger 650 double pumper. Can anyone tell me the advantages/disadvantages or each? Will the holley use much more gas then the quadrajet? The car will be used mostly for driving but will be taken to the strip occasionally. If neither of these carbs are adequate can you suggest anything else? thanks for your time,

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

All times are GMT -6. The time now is 10:29 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999 - 2012. All Rights Reserved.