• Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech

Anyone swapped in a '94-'95 5.0 EFI ?

  • Thread starter Thread starter whlnut_Ed
  • Start date Start date May 9, 2007

whlnut_Ed

Founding Member
Apr 19, 2002
74
0
6
Brunswick, GA
May 9, 2007
#1
  • May 9, 2007
  • #1
I have a '95 Cobra 5.0 and T-5 to put in a '66 fb. I have all the harnesses and J4J1ECU and need to know if anyone has made this swap. I need details like which sensors can be eliminated, what harness was used, and how the problem with the timing retard during shifting was handled. (SCT monochip, PMS, PIH harness?)I have seen all the sites with EFI swap info, and searched a bunch of forums but found none with what I need. I don't want to change to an A9L ECU, which is an alternative. And I know about the oil dip stick, and the a/c compressor clearance issues and have that covered. Thanks for any advice.
 

CraigMBA

New Member
Mar 24, 2007
783
1
0
Orange, CA
May 9, 2007
#2
  • May 9, 2007
  • #2
http://www.fordfuelinjection.com/

Learn it. Know it. Live it. Good luck.
 
6

68EFIvert

Member
Jan 13, 2007
639
0
17
Camas, Washington
May 9, 2007
#3
  • May 9, 2007
  • #3
CraigMBA said:
http://www.fordfuelinjection.com/

Learn it. Know it. Live it. Good luck.
Click to expand...

+1

I did the same thing about 18 months ago. I purchased the harness form Ryan at the site above. I went with that because it removed all the crap you don't need. Very easy intall. It was actually harder to bleed the JMC hydraulic clutch than intall the engine wiring. Highly recommend it!!!!
 

whlnut_Ed

Founding Member
Apr 19, 2002
74
0
6
Brunswick, GA
May 9, 2007
#4
  • May 9, 2007
  • #4
68EFIvert-
Are you using a 94-95 engine? Those 2 years are completely different, and the last year for Mustang 5.0s. That is why there is very little aftermarket support and why I need specific info on this particular swap.
If yes, do you have a J4J1 or T4MO ECU?
Thanks!
Ed
 

65fastbackresto

Active Member
Apr 13, 2007
1,229
7
39
AR
May 9, 2007
#5
  • May 9, 2007
  • #5
Hey Ed

check this out. One of the members web pages.

http://www.midnightdsigns.com/james/
 

whlnut_Ed

Founding Member
Apr 19, 2002
74
0
6
Brunswick, GA
May 9, 2007
#6
  • May 9, 2007
  • #6
Thanks for the links guys. I have been to every site I can find but the 94-95s are very unpopular for EFI swaps. I know some have changed to the earlier HO A9L computer, mostly to fix the timing retard when shifting a 5 speed, but that requires all new sensors and harnesses. I THINK I can use the wiring diagrams to mod the OEM harness and then tune the shift retard out with one of the remote tuners, or a chip. I also want to keep the other Cobra programming maps in the Cobra ECU, but there's alot more to it. I'm just not good at things that don't require a wrench.
 
6

68EFIvert

Member
Jan 13, 2007
639
0
17
Camas, Washington
May 10, 2007
#7
  • May 10, 2007
  • #7
whlnut_Ed said:
68EFIvert-
Are you using a 94-95 engine? Those 2 years are completely different, and the last year for Mustang 5.0s. That is why there is very little aftermarket support and why I need specific info on this particular swap.
If yes, do you have a J4J1 or T4MO ECU?
Thanks!
Ed
Click to expand...

I really don't know the difference between the pre 94-95 and the 94-95 computer systems. I do know that I only had to use a few of the sensors (MAP, BAP, TPS is what I can think of now. Send an e-mail to Ryan at fordfuelinjection.com and get his input on your conversion. The one positive thing with the 94-95 swap may be with the angle of the inlet pipe to the TB. It should give you a little more space for running the pipe. I am using a computer from a 88 Cali car and a 90 engine. You should replace the sensors when you do the swap. Less things to try and work through if you have electrial problems with the swap, just my .02. On the other hand you may have to change your computer...... Don't listen to me, just email Ryan he is the expert.
 
You must log in or register to reply here.

Similar threads

F
Electrical Foxbody wiring harness 2.3 to v8 swap
  • Foxbodyjake
  • Mar 23, 2026
  • Fox 5.0 Mustang Tech
  • 2
Replies
24
Views
719
Fox 5.0 Mustang Tech Apr 13, 2026
Foxbodyjake
F
K
3.8 T5 & Bellhousing to 1987 Lincoln 5.0
  • ks65stang
  • Mar 2, 2026
  • Other Auto Tech
Replies
3
Views
323
Other Auto Tech Mar 3, 2026
Noobz347
0
V6 to V8 Swap info
  • 02_2v_Curtis
  • Jan 11, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
0
Views
727
1996 - 2004 SN95 Mustang -General/Talk- Jan 11, 2026
02_2v_Curtis
0
D
Foxbody Misfire 5.0 Swap
  • DPORTER0729
  • May 2, 2025
  • Fox 5.0 Mustang Tech
Replies
7
Views
623
Fox 5.0 Mustang Tech Jul 13, 2025
90sickfox
C
5r55s auto to TR3650 Manual swap 4.0 V6
  • Ceskz
  • Feb 24, 2025
  • 2005 - 2014 Specific V6 Tech
Replies
7
Views
1K
2005 - 2014 Specific V6 Tech Mar 27, 2025
89ripper
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific 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?