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

Gt40 Heads And E303

  • Thread starter Thread starter Demustangs
  • Start date Start date Apr 24, 2017
D

Demustangs

Member
Apr 7, 2017
79
2
8
Apr 24, 2017
#1
  • Apr 24, 2017
  • #1
What horsepower with flat top pistons e303 gt40 heads with spring upgrade 650 carb 1.6 roller rockers this is a 89 stock roller bottom end block what kind of horsepower is this reasonably making ?
 

5.0Droptop

...all those nights we shared, and you're a dude??
Special Agent Mukity-Muck Whats in Charge Round Here
May 15, 2002
1,785
1,130
233
Indiana
Apr 24, 2017
#2
  • Apr 24, 2017
  • #2
250 275ish
 

5.0Droptop

...all those nights we shared, and you're a dude??
Special Agent Mukity-Muck Whats in Charge Round Here
May 15, 2002
1,785
1,130
233
Indiana
Apr 24, 2017
#3
  • Apr 24, 2017
  • #3
https://www.stangnet.com/mustang-forums/threads/guess-my-h-p-the-dyno-1-4-mile-time-thread.677534/



Look through there. Youll likely find similar set up that someone has dynoed
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,172
17,871
224
Massachusetts
Apr 25, 2017
#4
  • Apr 25, 2017
  • #4
Exhaust mods?
 

5.0Droptop

...all those nights we shared, and you're a dude??
Special Agent Mukity-Muck Whats in Charge Round Here
May 15, 2002
1,785
1,130
233
Indiana
Apr 25, 2017
#5
  • Apr 25, 2017
  • #5
Mustang5L5 said:
Exhaust mods?
Click to expand...

you mod your exhaust? Do you use the o-pipe with ketchup injection?
 
Reactions: Mustang5L5
You must log in or register to reply here.

Similar threads

J
MEED HELP!! 86 mustang
  • Jacob0121
  • Jan 23, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
6
Views
303
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Apr 25, 2026
CAMTWO1070
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
3
Views
685
1965 - 1973 Classic Mustangs -General/Talk- Feb 28, 2026
Noobz347
A
Discussion on mild budget build/ top end
  • Acesario
  • Feb 21, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 2
Replies
20
Views
648
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Feb 23, 2026
General karthief
Gt40 e303 combo questions
  • 99mustanggt2018
  • Mar 30, 2025
  • 1994 - 1995 Specific Tech
Replies
2
Views
408
1994 - 1995 Specific Tech Mar 30, 2025
KRUISR
S
Holley High-ram tuning settings
  • spencergt66
  • Apr 1, 2026
  • Digital Self-tuning Forum
  • 2
Replies
23
Views
412
Digital Self-tuning Forum May 12, 2026
spencergt66
S
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
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?