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

Just checked compression on cylinders of my 85 gt

  • Thread starter Thread starter maverick0716
  • Start date Start date May 26, 2005

maverick0716

Founding Member
Jan 12, 2002
3,924
0
56
Chilliwack, BC, Canada
May 26, 2005
#1
  • May 26, 2005
  • #1
The readings go as follows:

4 - 150 psi 8 - 160 psi
3 - 160 psi 7 - 160 psi
2 - 160 psi 6 - 155 psi
1 - 150 psi 5 - 160 psi

This is all on the stock engine with 245,000 kms (around 140,000 miles). What do engines with this kind of mileage usually get? I'm pretty sure those are really good numbers but I'm not positive. I'm about to install my new cylinder heads and camshaft in about a week.

Oh yeah, when I pulled all the plugs they looked perfect....not lean at all and not rich either!
 
H

Highbredcloud

Active Member
Mar 4, 2003
1,075
1
36
Palos Hills, IL
May 26, 2005
#2
  • May 26, 2005
  • #2
that's good...as long as all the cylinders are within 15psi of one another...you're good to go...
 

green

New Member
Apr 26, 2003
291
0
0
May 27, 2005
#3
  • May 27, 2005
  • #3
ya thats real good, espically on an engine with that many km,s
 

Stang8URMPRT

Active Member
Dec 28, 2003
1,100
1
38
Daytona Beach, FL
May 27, 2005
#4
  • May 27, 2005
  • #4
Yeah, very very good man. That's awesome with that many miles... Someone def. took care of that thing.
 

DMAN302

My mom says thanks for the pearl necklace.
Nov 8, 2003
2,120
2
59
windsor, Canada
May 27, 2005
#5
  • May 27, 2005
  • #5
Ok time for the heads and cam to get put in place..those numbers are exactly what you want to see from a strong 302.
 

maverick0716

Founding Member
Jan 12, 2002
3,924
0
56
Chilliwack, BC, Canada
May 27, 2005
#6
  • May 27, 2005
  • #6
Exactly what I wanted to hear guys.....thanks!
 
You must log in or register to reply here.

Similar threads

S
Fuel ‘88 GT Runs Rich Cold — Fixes Itself When I Unplug Sensors (ECT, MAF, O2, etc.)
  • Sufarry
  • Nov 6, 2025
  • Fox 5.0 Mustang Tech
Replies
12
Views
874
Fox 5.0 Mustang Tech Nov 9, 2025
Mustang5L5
D
Engine Questions on compression test results
  • dqureshi06
  • Jan 6, 2025
  • Fox 5.0 Mustang Tech
Replies
5
Views
429
Fox 5.0 Mustang Tech Jan 7, 2025
Noobz347
B
'03 GT Fuel Pump/Pressure/Delivery Issue
  • Brodach
  • Oct 21, 2025
  • SN95 4.6L Mustang Tech
Replies
8
Views
918
SN95 4.6L Mustang Tech Oct 31, 2025
gkomo
SURGING IDLE / NO IDLE CHECKLIST FOR 1996–1998 MUSTANG GT (4.6L 2V) - Work In Progress
  • Noobz347
  • Aug 30, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
0
Views
748
1996 - 2004 SN95 Mustang -General/Talk- Aug 30, 2025
Noobz347
R
What's it Worth? 1997 Cobra, a ton of mods and restoration
  • riored97snake
  • Jun 18, 2026
  • What is it Worth?!?!?
Replies
2
Views
179
What is it Worth?!?!? Jun 21, 2026
riored97snake
R
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?