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

4 cylinder conversion(sorry if this has been asked before)

  • Thread starter Thread starter efi2fly
  • Start date Start date Oct 14, 2008

efi2fly

Founding Member
Jun 28, 1999
129
0
17
Hampton, VA, USA
Oct 14, 2008
#1
  • Oct 14, 2008
  • #1
I have an 87 GT donor car for a 4 cylinder conversion on a 91 notchback. I was hoping someone may have done this and know what all is involved. I plan to switch from EFI to carb, do i need to add a mechanical fuel pump, do i need to do anything in the tank or to the lines? I think I have to change the radiator also. The GT rearend will also be going in, I plan to use the four cylinder springs in the back. I want to find a C-4 auto, how do i know which models will bolt up to my 302, also what size converter should i use for a mild motor? What about the brake system ( master cylinder, booster, lines, etc..)? I am also curious about how the guys in the magazines clean up under the hood, only leaving whats necessary, how do you know what can go and what can stay?
 
D

Duece Bigalow

New Member
Nov 21, 2002
5
0
0
Colo.Spgs,Co
Oct 14, 2008
#2
  • Oct 14, 2008
  • #2
You need from the spindles out on the brakes from the V8 car. The brake lines on the GT rearend are on the opposite sides of the 4 cyl rearend. Since you're going carb'd it is going to be very simple in moving all the wires, you pretty much only need the ones on the left side and you can hide those in the inner fender. As far as the fuel pump, you will not be able to use the one from the EFI car.
 

efi2fly

Founding Member
Jun 28, 1999
129
0
17
Hampton, VA, USA
Oct 17, 2008
#3
  • Oct 17, 2008
  • #3
Anyone else got anything? I need help. Could you suggest where i might find this info?
 
You must log in or register to reply here.

Similar threads

8
87 lx 4cyl to v8 project 4 lug disc conversion questions
  • 87lx428
  • Mar 24, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
2
Views
495
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Mar 25, 2026
87lx428
8
9
Engine Donor '00 Mountaineer meet '91 Fox
  • 91firecracker
  • May 11, 2026
  • Fox 5.0 Mustang Tech
  • 2 3
Replies
41
Views
772
Fox 5.0 Mustang Tech May 28, 2026
91firecracker
9
1
Electrical 1985 mustang gt Led conversion trouble
  • 1985fox
  • Jan 5, 2026
  • Fox 5.0 Mustang Tech
Replies
10
Views
591
Fox 5.0 Mustang Tech Jan 15, 2026
1985fox
1
E
4.6l auto to 5.4l 6 speed
  • EastanF5
  • Jan 22, 2026
  • SN95 4.6L Mustang Tech
Replies
0
Views
177
SN95 4.6L Mustang Tech Jan 22, 2026
EastanF5
E
1
Electrical Headlight harness trouble
  • 1985fox
  • Apr 14, 2026
  • Fox 5.0 Mustang Tech
Replies
7
Views
219
Fox 5.0 Mustang Tech Apr 17, 2026
AeroCoupe
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?