Fox body with 2015 IRS - Ford Mustang Forums : Corral.net Mustang Forum
 
LinkBack Thread Tools Display Modes
post #1 of 5 Old 06-28-2019, 09:12 PM Thread Starter
Registered User
 
Trader Feedback: (0)
Join Date: Aug 2014
Location: DeKalb, IL.
Posts: 534
Fox body with 2015 IRS

I read this story about a group of racers at Mid Ohio that built up a Fox body with serious intent. What really caught my eye was the use of a 2015 Mustang IRS rear axle. Does anyone have detail on what was required to make this happen? The older 1999-2004 IRS axles are becoming rare and expensive. I would guess that a fair amount of fabrication is required to fit the later rears.

https://www.onallcylinders.com/2019/...urance-racing/

Jay

petmotel is offline  
Sponsored Links
Advertisement
 
post #2 of 5 Old 06-29-2019, 02:04 AM
Registered User
 
Trader Feedback: (0)
Join Date: Nov 2016
Location: Kelowna BC
Posts: 52
I would be really interested in knowing how they used the 2015 IRS. Would be really nice if somebody produced a IRS for foxes, not sure why they don't.

Lukeb_11 is offline  
post #3 of 5 Old 07-02-2019, 10:48 PM
Registered User
 
Jack Hidley's Avatar
 
Trader Feedback: (5)
Join Date: Apr 2000
Location: Danville, CA USA
Posts: 2,976
It has to be a misprint. There is no way the car weighs 2,900lbs with an S550 IRS and Dart iron block. I really doubt the car has an S550 IRS in it. In the photos it clearly has a solid axle in it.

Jack Hidley
Maximum Motorsports Tech Support
Jack Hidley is offline  
Sponsored Links
Advertisement
 
post #4 of 5 Old 07-03-2019, 09:12 AM Thread Starter
Registered User
 
Trader Feedback: (0)
Join Date: Aug 2014
Location: DeKalb, IL.
Posts: 534
Quote:
Originally Posted by Jack Hidley View Post
It has to be a misprint. There is no way the car weighs 2,900lbs with an S550 IRS and Dart iron block. I really doubt the car has an S550 IRS in it. In the photos it clearly has a solid axle in it.
It does mention that it is fully gutted with Lexan windows, Harwood fiberglass trunk, doors, and hood. Although a Dart block is heavier than a stock 302 block, by the time you use the aluminum heads, and non-EFI intake you've dropped a lot of that weight.

I think the pictures are of the car in it's former state which has a 3 link rear SRA. I know that these kinds of articles are often filled with errors which was why I was asking. I do think the weight is possible, and I sure don't know where someone would come up with the late model IRS comment if that was not the case. Still makes me curious.

I was also hoping that someone on this board might run at this venue, and possibly have access to the gentlemen mentioned in the article. I might just have to make the trek myself (from Chicagoland).

Jay
petmotel is offline  
post #5 of 5 Old 07-10-2019, 09:52 PM
Registered User
 
qtrracer's Avatar
 
Trader Feedback: (34)
Join Date: Jun 2004
Location: Maryland
Posts: 5,348
I have a 16 GT and an 01 Cobra prior. The design of the later IRS is completely different from the earlier design. The shocks mount way outboard near the axle end, while the springs are inboard. The cradle and mounts are completely different as are the lower and upper arms. It's also a pretty wide track. I suppose it can be done but there would be a bunch of fabrication to mount, custom wheels and body mods to fit them on a Fox.
qtrracer is offline  
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Mustang Forums : Corral.net Mustang Forum 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 for yourself.

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