Larger exhaust or x-pipe. - Team Camaro Tech
Non-Camaro Tech Problems and Issues with your daily driver or other non-Camaro vehicles.

 
LinkBack Thread Tools Display Modes
post #1 of 4 (permalink) Old Jan 9th, 13, 06:19 AM Thread Starter
David
 
Join Date: Sep 2008
Location: Mesa, AZ
Posts: 5
Larger exhaust or x-pipe.

I am torn here. I know that a 2.5" exhaust is good until 500hp or so but what is the flow difference between a 2.5" system with x-pipe and a 3" system without an x-pipe. I'm putting this system on a '72 Nova with a 450hp 383 (600hp 406 in the works) but I only want to do the system once. It's a drag car that can be driven on the street. Also, Im not putting tail pipes on. I plan on having the exhaust dump right after the muffler. I know this is a Camaro forum but I wanted your opinions.

Thanks for the help.
Mexirican is offline  
Sponsored Links
Advertisement
 
post #2 of 4 (permalink) Old Jan 9th, 13, 10:26 AM
Gold Lifetime Member
John
 
Vintage 68's Avatar
 
Join Date: Mar 2002
Location: Moraga,Ca.,USA
Posts: 13,705
Cool Re: Larger exhaust or x-pipe.

I would think Muffler choice (for CFM requirements) and required system flow would be more important that X-Over sizing in your case.
But a properly sized and installed X-Over could increase high flow scavenging efficiencies and help top-end HP output.

Vizard wrote a very good flow article years ago for Popular Hot Rodding that had inputs from Joe Sherman and others on system design and sizing for given applications.
Try a search for Vizard Exhaust system sizing and see if Mr. Google can find it ...

1968 Convertible
Some trucks
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Other V8 things - some of which float
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Other V6 things - none of which float
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Oh yeah, and 1 "Straight-Six" ...
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


If a man says something in the garage - and his wife can't hear him - is he still wrong !!!
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Vintage 68 is offline  
post #3 of 4 (permalink) Old Jan 9th, 13, 04:50 PM
Senior Tech
 
Join Date: May 2001
Location: Ashby,MN, USA
Posts: 8,305
Re: Larger exhaust or x-pipe.

a 3" X pipe with 2.5" pipes after it with good flowing mufflers will do the job.

you don't plan sincerity.
you have to make it up on the spot.

wanna hear about 20 years ago when i was too smart to know any better?
novaderrik is offline  
 
post #4 of 4 (permalink) Old Jan 9th, 13, 10:27 PM
Gold Lifetime Member
the BOSS&Ralph
 
Join Date: Oct 2011
Location: Ozarks
Posts: 377
Re: Larger exhaust or x-pipe.

Fitting an x pipe with a 3 system wasnt difficult on 69 Camaro. Im guessing your Nova would be similar. At 600 HP Id do 3 with X pipe. I did this on a 406 N/A small block with a guesstimated 525-550 HP (flywheel). The band clamps make transmission servicing easy.

For your current engine 2 , but for your next engine Id go big.
Attached Thumbnails
Click image for larger version

Name:	DSCN6009.jpg
Views:	94
Size:	44.6 KB
ID:	31716   Click image for larger version

Name:	DSCN6026.jpg
Views:	96
Size:	42.5 KB
ID:	31717  
friendlyviper is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Team Camaro Tech forums, you must first register.
Please enter your desired user 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.
NOTE we receive a lot of registrations with bad email addresses. IF you do not receive your confirmation email you will not be able to post. contact support and we will try and help.
Be sure you enter a valid email address and check your spam folder as well.



Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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

 
For the best viewing experience please update your browser to Google Chrome