4 bbl on big and small block Chevy - 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 11-21-2007, 03:57 PM
Registered User
 
Join Date: Oct 2007
Location: Southern California
Posts: 4
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
4 bbl on big and small block Chevy

I follow NHRA drag racing closely and have two questions:
1) Many big block Chev in Super Gas, Super Comp, etc have over 500 cu in with a single 1150 cfm Holley and put out 1100 HP. But in other classes I see 400 cu in small block Chev running two 950 cfm Holleys. Shouldn't it be the other way around? How can a huge cu in big block be happy with just one 4 bbl when a small block needs two?

2) Fuel Funny cars have a burst panel on the "hood" to save the body if the blower bangs. Alcohol funny cars also have a burst panel for the same reason. But the Alcohol funny cars also have a "stove pipe" running from the engine bay to the side window to vent pressure in case of a banged blower. Why do they need both when the nitro funny cars only have the single burst panel?

Quick 58

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 11-21-2007, 04:40 PM
Bumpstick's Avatar
Hammer and a torch
 
Last photo:
Join Date: May 2003
Location: Southeast TX
Age: 54
Posts: 1,258
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
1... just class limitations set down by the sanctioning body... Big cubes limit the induction...small cubes let them do silly stuff...

2...Thats the difference between NHRA and IHRA... If I understand what your asking...?
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
the history of chevy v8's savman1 Hotrodders' Lounge 43 03-02-2012 06:57 PM
big block or small block chevy 69YENKONOVA Engine 81 05-13-2010 07:26 AM
Big Block vs Small Block Chevy bigjoedo Engine 82 05-03-2010 03:36 PM
does the small block chevy have a "proper" name? Hoxviii Hotrodders' Lounge 62 11-21-2009 07:50 PM
55 chevy small block to big block ehchvac Engine 0 05-02-2002 08:23 PM


All times are GMT -6. The time now is 04:27 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.