SBC head stamp? - 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
  #1 (permalink)  
Old 04-26-2008, 08:37 AM
Registered User
 
Join Date: Apr 2008
Location: Minnesota
Age: 47
Posts: 4
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
SBC head stamp?

461 castings on a 327 pulled them off the other day and noticed a stamp number 3 on one of the flats where the valve cover gasket meets(both heads identical). I'm assuming it was from previous machine work but for the life of me can't remember what it indicates?

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 04-26-2008, 09:12 AM
Holder350's Avatar
Auto Parts Professional
 
Last photo:
Join Date: Feb 2005
Location: Whitesburg, TN
Posts: 1,037
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Most STOCK SBC heads dont have a machined valve cover sealing surface.

Most are a rounded ^ rough cast surface.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 04-26-2008, 09:19 AM
Registered User
 
Join Date: Apr 2008
Location: Minnesota
Age: 47
Posts: 4
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
SBC heads

Quote:
Originally Posted by Holder350
Most STOCK SBC heads dont have a machined valve cover sealing surface.

Most are a rounded ^ rough cast surface.
its not on the actual sealing area its a boss that was machined flat just inside of where the gasket rides if that makes sense
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 04-26-2008, 09:23 AM
Holder350's Avatar
Auto Parts Professional
 
Last photo:
Join Date: Feb 2005
Location: Whitesburg, TN
Posts: 1,037
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
....AHHHHH I bet the heads were cut .030
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 04-26-2008, 09:38 AM
Registered User
 
Join Date: Apr 2008
Location: Minnesota
Age: 47
Posts: 4
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
if this is true and i think your right, there is more to this little 327 than meets the eye.
I did notice the pistons are .041 oversized and has a double roller timing chain. What else might I find? I don't plan on tearing down the bottom end. If
these heads have been milled are they worthy of rebuild or is the vortec the way to go?
I have read plenty on the arguement? as usual money is a limiting factor, I'm not looking for killer power just a respectable motor (for now)
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 04-26-2008, 09:59 AM
Holder350's Avatar
Auto Parts Professional
 
Last photo:
Join Date: Feb 2005
Location: Whitesburg, TN
Posts: 1,037
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
When you mill a head to increase your CR.

so even tho it makes more power you have to run on high test.

IMO I would go with the vortech heads which will give you greater flow, more power and a lower compression ratio.

Thus having no problem with detonation and being able to run on low grade gas.

then if you want to mill those .030 and make even MORE power.

Keep in mind that this is saying that the heads you have now have something like a 64cc chamber.
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:
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
SBC Head Identification Help Wadeamca Engine 9 09-07-2008 05:38 AM
How many cc's is a SBC 487 head? AGELE55 Engine 1 04-14-2008 10:34 AM
SBC HEAD QUESTION: Need Help Picking A Head Mustangsaly Engine 11 12-01-2007 01:02 PM
Increasing HP on my Blown SBC with Cylinder Head Replacement 1950bulletnose Engine 5 03-04-2004 11:00 AM
SBC head info please #458642 newchevyman Engine 4 07-16-2003 08:11 PM


All times are GMT -6. The time now is 08:13 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.