• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

Trying to learn a little.

  • Thread starter Thread starter Three_0_Two
  • Start date Start date Aug 1, 2004

Three_0_Two

New Member
Jul 20, 2004
54
0
0
Warwick, QC
Aug 1, 2004
#1
  • Aug 1, 2004
  • #1
Is there any difference between emmission and non-emmission heads other than passing emmission tests?
 
8

87'GTstang

New Member
Feb 16, 2004
1,025
0
0
Aug 1, 2004
#2
  • Aug 1, 2004
  • #2
They essentially just don't have the hookups for all the emissions-related equipment like the factory ones do. So although you would still have the equipment on your car, you'de have no where to hook them up if need be - therefore your vehicle will probably not pass the sniffer test if it ever came to that.
 

90mustangGT

I felt sorry for girls because
Founding Member
Jan 15, 2002
2,773
17
89
Dallas, GA
Aug 1, 2004
#3
  • Aug 1, 2004
  • #3
87GT is correct but didn't quite put it in the right words. The emmisions heads for our cars have small holes on the tops of the exaust ports which lead to the very center of the head where they feed exaust gasses to the middle of the intake which routes the gasses to the EGR plate where the EGR valve releases the gasses back into the intake durring certian conditions. There is also a port in the back of the head where the air pump/smog pump pushes air into the head at certian conditions. A non-emmisions head will not have these ports. With a good converter, you should still be able to pass, but you'll burn the converter up pretty quickly.
 

Three_0_Two

New Member
Jul 20, 2004
54
0
0
Warwick, QC
Aug 2, 2004
#4
  • Aug 2, 2004
  • #4
Thx for the info
 
You must log in or register to reply here.

Similar threads

R
Engine Evap and charcoal cannister leak
  • ryan1994stang
  • Mar 14, 2026
  • Fox 5.0 Mustang Tech
Replies
8
Views
386
Fox 5.0 Mustang Tech Mar 18, 2026
Mcmahst
D
Engine HO cam in non HO roller block ‘93 f150
  • DanC1993f150
  • Mar 21, 2026
  • Fox 5.0 Mustang Tech
Replies
7
Views
222
Fox 5.0 Mustang Tech Mar 29, 2026
General karthief
3
393W Stroker with Boost - Need Spark Plug Recommendations
  • 387lx
  • Apr 29, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
3
Views
242
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Apr 30, 2026
HotFox
R
First project car and first time learning on cars
  • Rustang jr
  • Oct 2, 2025
  • The Welcome Wagon
Replies
9
Views
319
The Welcome Wagon Oct 6, 2025
Rustang jr
R
Fox Help
  • 93fox85
  • Mar 22, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
5
Views
182
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Mar 23, 2026
Noobz347
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?