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

5.0 EFI in early Stang..Performance upgrades?

  • Thread starter Thread starter PickupMan
  • Start date Start date Jul 9, 2004

PickupMan

Founding Member
Jan 30, 2000
403
7
28
Hazleton, Pa
Jul 9, 2004
#1
  • Jul 9, 2004
  • #1
I'm tossing around the idea of installing a 5.0 efi in my early 66 stang. I'm going to build it up myself. I'm going to use an 89-93 Mass air efi setup. I was thinking. .030 over bore, forged pistons, bigger cam????, gasket match stock heads, headers, flowmaster exhaust. What cam should I run? I want this thing to make some good power. What are the firtst mods you guys do to a stock 5.0??
Right now i have a 289, .030 over, forged pistons, stock heads gasket matched w/therm humps removed from exhaust ports, cam dur. 212 214 @.050 lift.478 .496, weind high rise dual plane intake, holley 650, headers and flowmaster exhaust. I have a 4 speed w/ 3.50 gear in the rear.

Thanks!
 

rsw007

New Member
Jul 7, 2004
469
1
0
Lexington,SC
Jul 9, 2004
#2
  • Jul 9, 2004
  • #2
nothing inside the motor while your using the stock heads. swap heads then you should go with bigger cam
 

DJTR

Member
Mar 19, 2004
228
0
16
OTTAWA, Ontario, Canada
Jul 9, 2004
#3
  • Jul 9, 2004
  • #3
A B-303 Will work Nicely with a stock setup to get you a little more kick Also if you are looking for quick power go with under drive pullies, bypass the smog pump and slap on some headers. A k&n will help your setup as well. All of these upgrades will work well on a stock setup and give you an increase you will definetly notice seat of the pants, it will really help wake that motor up!
 
You must log in or register to reply here.

Similar threads

6
Hey all,I’m putting together a 302 for my 1968 Mustang and wanted to post the combo + some questions to make sure I’m not missing crucial
  • 68_Disgustang
  • Feb 22, 2026
  • 1965 - 1973 Classic Mustangs -General/Talk-
Replies
4
Views
853
1965 - 1973 Classic Mustangs -General/Talk- Jun 20, 2026
gray owl
G
S
Requesting Guidance for 306 motor swap - Fuel? - SD? MAF?
  • So_Flo
  • Jul 26, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 2
Replies
32
Views
2K
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jan 4, 2026
Mcmahst
S
Newbie looking for budget 5.0 and suspension advice
  • stillwater79
  • Jan 19, 2024
  • 1965 - 1973 Classic Mustangs -General/Talk-
Replies
2
Views
802
1965 - 1973 Classic Mustangs -General/Talk- Feb 3, 2024
AeroCoupe
Progress Thread "Alter Ego" White 1993 LX 5.0 5spd
  • idareu
  • Sep 9, 2024
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 2 3
Replies
42
Views
2K
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Feb 19, 2025
idareu
O
Computer swap
  • Oakman
  • Jun 22, 2024
  • The Welcome Wagon
Replies
2
Views
570
The Welcome Wagon Jun 22, 2024
Oakman
O
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?