Cylinder head intake volume help? - 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 12-27-2009, 07:39 AM
Registered User
 
Last photo:
Join Date: Aug 2009
Location: Sarnia, ON
Posts: 25
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Cylinder head intake volume help?

Have narrowed my head selection down to 3, the only difference between them being the intake runner volume.
The part numbers are 12301, 12303, and 12305 by RHS. 180cc, 200cc, and 220cc intake runner volume.
How do I pick what volume I need for my 383? Would like recommendations, but would also like to understand why.

    Advertisement

Last edited by ddekeyser; 12-27-2009 at 08:05 AM.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 12-27-2009, 08:16 AM
bondo's Avatar
Member
 
Last photo:
Join Date: Nov 2002
Location: Chaumont Bay N.Y.
Posts: 960
Wiki Edits: 0

Thanks: 7
Thanked 15 Times in 15 Posts
Ayuh,... Basically, the smaller runners are for building torque, down Low...
Bigger runners are for building horsepower Higher in the rpm band...

As usual,...
Much more Info on what, Exactly you're trying to do, in what application is necessary...
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 12-27-2009, 08:20 AM
Registered User
 
Last photo:
Join Date: Aug 2009
Location: Sarnia, ON
Posts: 25
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Just trying to build a solid, reliable street motor that can go down the track occasionally. They are all the same price too, so thats not an issue. The cam I have is only .440 lift on int and exh, and 266 duration int and exh. Might eventually swap out the cam and maybe throw nitrous on, but that is way down the line.
On the RHS site, they actually say that the 220cc heads are the way to go on 383, but never really say why. They just have a chart for cubic inches.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 12-27-2009, 11:40 AM
zildjian4life218's Avatar
Listen and Learn
 
Last wiki edit: DIY junkyard electrical fan controller
Last journal entry: SBC 305 Twin Turbo
Last photo:
Join Date: Dec 2008
Location: WNY/Rochester, New York
Age: 25
Posts: 1,586
Wiki Edits: 7

Thanks: 44
Thanked 8 Times in 8 Posts
whats the power band on your combination? A lot of people are running 170cc vortec heads on 383s so i wouldn't see why the 180cc head would be perfect for ya. Maybe if you were turning some serious rpms then the other heads would be a consideration, but to me the 180cc heads would be perfect. Like bondo said smaller runners build torque, 383s build torque easier due to the longer stroke.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 12-27-2009, 11:58 AM
F-BIRD'88's Avatar
Yada Yada Yada
 
Last photo:
Join Date: Oct 2005
Location: Ontario, Canada
Posts: 9,540
Wiki Edits: 0

Thanks: 3
Thanked 331 Times in 328 Posts
Your best choice for your purpose is the 200cc port volume.
If your 383 has a flat top piston choose the 72cc chamber head.
Ditch the cam. Its too small for high perf. Give it or sell it to some one who whats a one step up "RV cam" from a stock cam in a stock motor.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 12-27-2009, 12:05 PM
Registered User
 
Join Date: Jul 2006
Location: ny
Age: 42
Posts: 116
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
With that cam I hardly think it makes a difference. As stated above, you need a bigger cam.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 12-29-2009, 06:30 PM
Registered User
 
Last photo:
Join Date: Aug 2009
Location: Sarnia, ON
Posts: 25
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
thanks guys
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
crate chevy 302? Vancouver Grand Prix Hotrodders' Lounge 106 12-31-2012 04:05 PM
Compression Ratio Tribal Engine 5 11-15-2008 07:04 PM
BBC cylinder head question Ratoflic Engine 19 11-14-2005 03:22 PM
NEW GMPP VORTEC heads !! terror385 Engine 1 07-11-2004 09:48 AM
Cam Help black66 Engine 3 05-12-2003 06:15 PM


All times are GMT -6. The time now is 09:18 PM.


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.