Holley 4 bbl 650 cfm lbs of pressure? - 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
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 07-06-2012, 06:23 AM
Registered User
Join Date: Jul 2012
Posts: 4
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Holley 4 bbl 650 cfm lbs of pressure?

Hi, just a quick hello and, want to have an expert on this forum tell me if I need a fuel regulator on a Holley 650 cfm carb. It is a new plane jane 4 bbl carb that was jetted for 6000 feet cause I live in Denver. It is on a 1968 ford 429 cid in a 1952 ford f1. I would like to know what is the min and max lbs of pressure one of these carbs can handle before I need to place a regulator in the line? I am looking for an electiric fuel pump that I do not need a regulator for.

Thanks Dennis.

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 07-06-2012, 06:54 AM
Last photo:
Join Date: Jun 2005
Location: St. Louis, MO
Age: 31
Posts: 9,544
Wiki Edits: 0

Thanks: 20
Thanked 404 Times in 377 Posts
It depends on a lot, they can be used anywhere from 2 to about 10psi, stock holleys usually run best at 5 to 6 psi though.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 07-06-2012, 10:03 AM
Registered User
Join Date: Oct 2010
Location: united kingdom
Posts: 271
Wiki Edits: 0

Thanks: 1
Thanked 2 Times in 2 Posts
Im using a holley red top fuel pump,no regulator required. you will need one if you use a blue top pump though!
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply

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.

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
How much fuel pressure for a Holley 650? 4speed57 Engine 3 04-24-2011 04:42 PM
Holley 6425 650 CFM 2 barrel lluciano77 Engine 15 01-28-2011 11:26 AM
650 cfm mainbody on a 750 cfm baseplate? darkostoj Engine 3 09-05-2008 07:38 AM
650 Holley Double Pumper or Edy 650 Thundre Series topdogger Engine 24 08-01-2007 08:12 AM
600 cfm holley vs 750 cfm holley 85 regal Engine 7 11-27-2002 06:25 PM

All times are GMT -6. The time now is 11:17 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 Hotrodders.com 1999 - 2012. All Rights Reserved.