EFI and manifold selection? - 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 07-18-2006, 08:36 AM
Last photo:
Join Date: Jun 2003
Location: Edmonton, Alberta
Posts: 66
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
EFI and manifold selection?

Could someone answer me a question with regards to the RPM range of an intake manifold. I would like to put together a EFI setup and have a Victor Jr intake with injector bungs welded into it. My question is this: Edelbrock rate the Victor Jr. at 3500-8500 in a carburated setup, yet if you look at the EFI setup that Edelbrock sells, which uses the same manifold, is rated 1500-6500 RPM. WHat gives? Is it related to a air velocity having to pull fuel from a carb where as the EFI directly injects into each port? Help me understand.

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 07-18-2006, 02:03 PM
Registered User
Join Date: May 2006
Location: cda, id
Age: 33
Posts: 282
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I am more than likely going to stand corrected on this but I belive that a manifolds operating range is dictated buy the lenght and size of the runner. A long runner(TPI) usually runs out of breath sooner than a short runner design. I would just buy the manifold that is going to fit you engines rpm range and have injector bungs welded in. Hope this helps a little?
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
Intake Manifold and Carb Ozz1967 Engine 9 12-29-2005 12:34 PM
Torker manifold with a carb or TBI and RPM range? Zeder Engine 9 02-05-2005 02:14 PM
dual plane intake efi conversion macx Engine 0 10-29-2003 06:41 PM
ZZ$ with EFI powermite General Rodding Tech 2 09-17-2003 12:06 AM
efi stack injection or ?? deuce_454 Engine 3 09-05-2002 01:27 PM

All times are GMT -6. The time now is 06:32 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.