Engine build intake manifold choice - 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 02-26-2011, 06:17 AM
Registered User
 
Join Date: Mar 2009
Location: Oklahoma
Posts: 78
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Engine build intake manifold choice

SBC 350 .040 over
Patroit 190cc heads CNC'd heads
Comp cams xtreme energy 282 Hyd. Roller
SRP Pistons
Eagle crank and rods(I-beam)
Crane gold roller rockers
670cfm holley carb
MSD 6al

I have a Professional products hurricane intake but my cam only makes power to 5800 RPM I planned on going with one of the air gap models (1500-6500RPM) Which do you guys favor?

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 02-26-2011, 09:54 AM
Registered User
 
Join Date: Feb 2011
Location: las vegas
Posts: 48
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
cant beat a performer rpm for street, been proven a gagillion times
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 02-26-2011, 04:35 PM
my87Z's Avatar
Veteran/Firefighter-EMT-I CRT
 
Join Date: Mar 2009
Location: maryland
Age: 31
Posts: 1,685
Wiki Edits: 0

Thanks: 6
Thanked 11 Times in 11 Posts
i agree with the performer rpm, but i dont like the air-gaps and i've never heard much good about them either
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 02-26-2011, 10:08 PM
355ci's Avatar
Registered User
 
Join Date: Oct 2010
Location: sc
Posts: 33
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I have an air gap rpm.
Noticeable power increase over professional products cyclone

Last edited by 355ci; 02-26-2011 at 10:13 PM.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 02-28-2011, 04:28 PM
Member
 
Join Date: Oct 2004
Location: Los Angeles
Posts: 173
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
manifold choice

The Professional Products Cyclone competes with the Edelbrock Performer. The Professional Products Typhoon competes with the Performer RPM and the Pro Products Crosswind is the equivalent of the Air Gap.

If you study the design of the Performer RPM and the Air Gap you will see that the design of the plenum and the runners are nearly identical. The only difference is the Air Gap has an open space under the plenum and runners.

This is also true for the Professional Products Typhoon and Crosswind. The core used in the casting process, which is what is used to form the internal open spaces of the manifold (plenum and runners) is identical between these two manifolds.

So typically the only performance difference that you will get is the open area under the plenum helps keep heat transferring from the engine to the manifold and the fact that outside air passes through this area also promotes a cooler air intake charge. I have never seen any direct comparison dyno tests but I would have to believe the the actual gain is fairly small. Probably in the range of 3 or 4 HP.
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
350/290 GMPP Engine Build need advice(cam, intake etc) Chevyboy_0 Engine 5 08-26-2010 12:32 PM
Manifold and engine build advice needed!!!! off2wildblue Engine 25 07-16-2009 07:05 PM
First engine build - would a roller cam be a better choice? surfshark Engine 4 05-28-2006 06:02 PM
Intake Manifold Choice? Please Help sb72elcamino350 Engine 3 06-04-2005 05:58 PM
O2 sensor bung placement/ manifold choice williambartram Engine 12 12-19-2004 12:31 PM


All times are GMT -6. The time now is 01:56 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.