PVC Valve - 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 04-27-2011, 09:44 AM
Registered User
Last photo:
Join Date: Mar 2009
Location: cleveland
Posts: 27
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
PVC Valve

OK OK I have seen a lot of post today about PVC Valve placements. I have a question

I do not have a PVC Valve installed on my 79 SBC 350; currently I have a breather coming off one of my valve covers with a tube that vents to the bottom (Outside) of the frame. Is this hurting my performance any? The motor seems to run great, just curious about this.


Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 04-27-2011, 10:50 AM
busted knuckles
Last photo:
Join Date: Mar 2011
Location: Whatcom County, WA
Posts: 39
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
No, your carb'd 350 is fine, I wonder though, do you have a hole on each valve cover?, on my 78 350 I have two oil breather caps, one on each side.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 04-27-2011, 11:11 AM
benwantland's Avatar
Last photo:
Join Date: Oct 2004
Location: Iowa
Posts: 199
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Your setup is probably "good enough", but - there's no reason NOT to run a PCV on a street engine. For one thing, a lot of breathers just have steel wool or something similarly coarse in them for filtration, which is fine when they're exhaling, but what about when air outside air moves through that breather into your motor? Lots of dust and crap that you don't want inside your engine. Plus, your draft tube is going to be puking oil out onto the underside of your car (which I guess is helpful for corrosion control), as well as your garage or trailer floor, the street, the track staging area, etc.

And a properly functioning PCV system (PCV valve on one side, breather drawing filtered air from your air cleaner on the other side) will reduce oil leakage & emissions, while theoretically improving your ring seal slightly, due to the vacuum in the crankcase (not technically a vacuum, but lower than atmospheric pressure). They're cheap and simple. I'd run one. You do what you want.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 04-27-2011, 01:02 PM
Registered User
Last photo:
Join Date: Mar 2009
Location: cleveland
Posts: 27
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I also Have antoer breather on the otherside as well,


Thank you for the information I will look into getting the PVC setup and intalled

Thanks Guys
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
broken valve? valve spring is sitting off center from rocker tip. zoomo Engine 63 03-25-2011 08:37 PM
how do i measure valve seat for valve head diameter? 406 ss monte Engine 2 04-07-2010 09:36 AM
isolator valve, sleeve, regulator valve for 4l60e? mike 96 ws6 Transmission - Rearend 28 01-29-2006 11:16 AM
Is this (bigger) valve sitting right afte the new seats and valve job? sizemoremk Engine 16 12-11-2005 12:18 AM
Can the dual coil valve springs on a BB destroy Valve guide seals Auto-Part Engine 4 11-25-2003 05:23 PM

All times are GMT -6. The time now is 10:07 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.