Holley 4160 (0-3310) question - 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 01-09-2009, 06:13 AM
Registered User
Join Date: Jan 2009
Location: Houston TX
Posts: 3
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Holley 4160 (0-3310) question

I have a 1968 GT with no history or info from previous owner. I was having some trouble with excelleration after the 2nd tank of gas and found I had a bunch of debri in the tank. So I replaced the tank and fuel lines and pump.

Note: I am weak when it comes to carburators knowledge!

I am getting ready to rebuild the Carburator it is a Holley with 0-3310 stamped near the choke plate (no other numbers that I could see). I believe this is a 4160 with vacuum secondaries (since it has the diaghram on the side) and manual choke that isn't connected to anything. When I started checking the carb I was checking the float settings and I noticed that the gas in the secondary float area looked really old. And I noticed that all of the vacuum ports (3 or 4 of them) have rubber boots over them and are not connected to anything on the engine.

Does this mean that he secondarys will not function?


Should they function without any of these ports connected and there is an injector or nozzle plugged on the secondaries causing the gas to never flow?

Thanks for your help.

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 01-09-2009, 07:40 AM
302 Z28's Avatar  
Last photo:
Join Date: May 2003
Location: North Texas
Posts: 10,940
Wiki Edits: 0

Thanks: 1
Thanked 119 Times in 100 Posts
The vacuum source that operates the secondary diaphragm is internal and the plugged ports that you see have no bearing on secondary diaphragm operation. If you decide to rebuild the carb, FWIW purchase a quality rebuild kit. DO NOT buy a house brand kit. Some of the best kits available are of course a Holley kit, second would be a Borg Warner kit.

Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 01-09-2009, 09:00 AM
lg1969's Avatar
Google "Tunnel Ram 406"
Last photo:
Join Date: Oct 2007
Location: Bohemia, L.I.N.Y.
Age: 67
Posts: 1,088
Wiki Edits: 0

Thanks: 2
Thanked 26 Times in 23 Posts
It Sounds your secondary is not functioning during hard acceleration. I would remove the diaphragm housing off the carburetor and check to see if no damage to the diaphragm itself. Be careful when taking it apart because there is a check ball in the housing. There is a cork like gasket between housing and the carburetor. After checking the diaphragm for any damage carefully reassemble it. Make sure the four holes on the diaphragm line up when mounting the screws. You can tear the diaphragm if not line up. After assembly press the diaphragm rod in and put finger on the vacuum port of housing. If the diaphragm rod does not return back, you’re OK. While having the housing removed check if the secondary throttle plate is not jammed. Hope this help you.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 01-09-2009, 09:37 AM
JJ269J's Avatar
Registered User
Last photo:
Join Date: Jan 2009
Location: Gainesville, FL
Age: 38
Posts: 45
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Before removing the vacuum diaphragm to inspect it (and risking damaging something before your ready to rebuild it), try this. Get a small paper clip or wire of some sort (I have even used welding wire) and wrap it around the shaft of the diaphragm and make sure it is as high as it can go on the shaft against the diaphragm housing. Make sure it can't actually go into the housing. Make sure the clip doesnt move real easy. Drive the vehicle and floor it! Stop and check the position of the paper clip. If the secondaries are opening the paper clip will be lower on the shaft. If not, the paper clip will have not moved. It's quick and easy.

On a side note: You must drive the vehicle and put a load on the engine or the secondary will not open. A vacuum sec. Holley will almost never open the secondaries by revving the engine in park with no load. Good luck
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 01-09-2009, 09:38 AM
Registered User
Last photo:
Join Date: Jun 2008
Location: NJ
Posts: 306
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
well you guys beat me to it
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 01-09-2009, 11:57 AM
Registered User
Join Date: Jan 2009
Location: Houston TX
Posts: 3
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Thanks for the reply. I will check it out this weekend.
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
Holley carb question junkyardjeff Engine 7 08-31-2008 06:09 AM
New Holley carbs any good? (4160, Street Avenger,etc) Saito Engine 1 08-11-2008 05:25 PM
holley 4160 rebuild question 62galaxiguy Engine 1 05-21-2008 06:19 PM
holley 600 rebuild question SpankyNuts Engine 12 04-15-2005 04:53 AM
Holley Carb/supercharger Question subman17 Engine 1 05-19-2004 11:05 AM

All times are GMT -6. The time now is 02:05 AM.

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.