Vacuum reading with new cam sbc 350 - Page 2 - 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
  #16 (permalink)  
Old 09-05-2010, 01:18 PM
Registered User
 
Join Date: Dec 2004
Location: San Jose Ca
Age: 62
Posts: 472
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Lets say 1 cam/timing chain assembly has a plus or minus 1 degree tolerance and the second has the same but 1 is advance 1 degree and the other is retarded 1 degree now you have a 2 degree difference between the 2 cams.

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #17 (permalink)  
Old 09-05-2010, 01:48 PM
Registered User
 
Last photo:
Join Date: May 2008
Location: ohio
Posts: 1,474
Wiki Edits: 0

Thanks: 36
Thanked 43 Times in 40 Posts
Well guys some great news I just got done replacing my brake booster with a new one and I took out my brass fitting in the back of my intake that had my vacuum modulator hooked up to and it must have been sucking in a very small amount of air even though you could not tell it.

But long story short I plugged it back up and t fitted it into my vacuum advance line hookup and with that change and my new brake booster in I just happened to hook up my vacuum gauge again and now I have an amazing 19 inches of vacuum at idle and a very nice steady needle. Was steady before but was at 15 and that was with vacuum advance and all things hooked up.

Thing still ran just fine before these changes except while driving and slowing down with the brake booster leaking inside idle would pick up just a hair then go back down but all is very good now.
Thanks again.
Eric
Reply With Quote Quick reply to this message
  #18 (permalink)  
Old 09-05-2010, 05:37 PM
Custom10's Avatar
my KARMA ran over my DOGMA
 

Last journal entry: SS
Last photo:
Join Date: May 2009
Location: Saskatchewan, Canada
Age: 49
Posts: 1,097
Wiki Edits: 0

Thanks: 16
Thanked 28 Times in 24 Posts
19 " just like you were expect'n ,,,that's plenty good suction at idle, good thread, good digg'n there eric.
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
Vacuum advance hooked up directly to manifold....is this bad????? Steve-0321 Engine 69 03-10-2014 05:10 PM
SBC 350 superiority rebuttle...was:POWERED BY CHEVY, WRITTEN ON A FORD, (from 'Engine Oldsmolac911 Hotrodders' Lounge 50 01-12-2011 10:00 PM
Wich cam would you choose between these two? sbc 350 eric32 Engine 11 06-22-2009 05:57 PM
Timing woes on SBC 350 with bigger cam. Brawler Engine 5 09-07-2007 04:33 PM
Will this cam have more vacuum in a 350 Mr. Wormy Engine 2 06-14-2007 01:00 PM


All times are GMT -6. The time now is 05:25 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.