MustangForums.com

5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

Qestion about my aluminum GT40 heads

Thread Tools
 
Search this Thread
 
Old 08-26-2009, 11:18 AM
  #1  
holyshift
3rd Gear Member
Thread Starter
 
holyshift's Avatar
 
Join Date: Jul 2007
Location: Sandusky,OH
Posts: 893
Default Qestion about my aluminum GT40 heads
On the front if my heads, SVO is engraved in the head,does anybody know what or why??? Thanks!
holyshift is offline  
Reply
Old 08-26-2009, 11:55 AM
  #2  
AdderMk2
Banned
 
AdderMk2's Avatar
 
Join Date: Dec 2005
Location: Lil' Rhody
Posts: 22,376
Default
because the original performance group at ford was SVO, which was then renamed SVT... they are original gt-40 aluminums...
AdderMk2 is offline  
Reply
Old 08-26-2009, 12:55 PM
  #3  
holyshift
3rd Gear Member
Thread Starter
 
holyshift's Avatar
 
Join Date: Jul 2007
Location: Sandusky,OH
Posts: 893
Default
Thank ya!!
holyshift is offline  
Reply
Old 08-26-2009, 05:58 PM
  #4  
ttocs
6th Gear Member
 
ttocs's Avatar
 
Join Date: Feb 2006
Location:
Posts: 6,936
Default
svo = special vehicle operations
ttocs is offline  
Reply
Old 08-26-2009, 07:32 PM
  #5  
westcoast25
 
westcoast25's Avatar
 
Join Date: Jul 2009
Location: California
Posts: 39
Default
I think they could be the gt40y or gt40x heads also...I was told if you take the valve cover off there will be a part number to tell which ones you have.
westcoast25 is offline  
Reply
Old 08-26-2009, 07:40 PM
  #6  
holyshift
3rd Gear Member
Thread Starter
 
holyshift's Avatar
 
Join Date: Jul 2007
Location: Sandusky,OH
Posts: 893
Default
Would you happen to know the part number of which one is an x head or y??? and what would the difference be performance wise?
holyshift is offline  
Reply
Old 08-26-2009, 07:46 PM
  #7  
westcoast25
 
westcoast25's Avatar
 
Join Date: Jul 2009
Location: California
Posts: 39
Default
Check this out...
http://www.allfordmustangs.com/Detai...mparison+graph

I was told that it will be a series of #'s and then it will be either x303 or y303
westcoast25 is offline  
Reply
Old 08-26-2009, 08:17 PM
  #8  
nitrous_bob
6th Gear Member
 
nitrous_bob's Avatar
 
Join Date: Oct 2005
Location: st clair shores MI
Posts: 6,028
Default
^^^^ yup

right in the part number
nitrous_bob is offline  
Reply
Old 08-26-2009, 08:55 PM
  #9  
stang8689
6th Gear Member
 
stang8689's Avatar
 
Join Date: Jan 2007
Location: Milford, Delaware
Posts: 5,464
Default
My gt-40x had svo engraved
stang8689 is offline  
Reply
Old 08-27-2009, 12:44 AM
  #10  
kuikcat
1st Gear Member
 
kuikcat's Avatar
 
Join Date: Jul 2009
Location: california
Posts: 77
Default
i have sme gt-40 laying around, ill check for serial #s
kuikcat is offline  
Reply



Advanced Search
Quick Reply: Qestion about my aluminum GT40 heads


Reply Closed Thread Share
Forum Jump

All times are GMT -5. The time now is 06:54 AM.