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

stock compression ratio?????????

  • Thread starter Thread starter 88stangmangt
  • Start date Start date Jun 29, 2004

88stangmangt

Active Member
Nov 25, 2003
2,332
1
48
Stafford,VA
Jun 29, 2004
#1
  • Jun 29, 2004
  • #1
what is stock compression raito for our h.o 5.0 92greengt found article that says it is 9:1 i say it is 10:1 who is right? also what would be the best way to lower it to 9:1 if it is 10:1 for my combo could i use my stock piston heads? thanks!!!!!!!!!!!
 

maverick0716

Founding Member
Jan 12, 2002
3,924
0
56
Chilliwack, BC, Canada
Jun 29, 2004
#2
  • Jun 29, 2004
  • #2
It's 9:1....sorry, you're the wrong one, lol!
 

88stangmangt

Active Member
Nov 25, 2003
2,332
1
48
Stafford,VA
Jun 29, 2004
#3
  • Jun 29, 2004
  • #3
awwwww man now i feel like a fool well then why do i see 10:1 all over this board did they change it at a certain year?
 

Mavrick

Founding Member
Aug 29, 2002
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Collingwood, ON
Jun 29, 2004
#4
  • Jun 29, 2004
  • #4
It's 8.9:1
 

maverick0716

Founding Member
Jan 12, 2002
3,924
0
56
Chilliwack, BC, Canada
Jun 29, 2004
#5
  • Jun 29, 2004
  • #5
I don't know about the later years, but 87-93 fox 5.0L had 9:1. I know my 85 has 8.4:1......terribly low And I think 86's had around 9.5:1. Maybe you're hearing 10:1 because people don't have stock heads? The combustion chambers on stock E7 heads are 65 cc (my E5's are 70 cc), anything lower than that will increase your compression ratio.
 
9

92GreenGT

PEAT
Founding Member
Jul 18, 2002
2,085
1
46
Big Stone Gap, VA
Jun 29, 2004
#6
  • Jun 29, 2004
  • #6
Yes.



Dave
 

88stangmangt

Active Member
Nov 25, 2003
2,332
1
48
Stafford,VA
Jun 29, 2004
#7
  • Jun 29, 2004
  • #7
92GreenGT said:
Yes.



Dave
Click to expand...
dont worry man i was wrong but you still got first dibs on driveing my car when it is done.
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
34
129
Jun 29, 2004
#8
  • Jun 29, 2004
  • #8
88stangmangt said:
also what would be the best way to lower it to 9:1
Click to expand...


to answer your question, listen to Dave.

that was easy wasnt it.
 
9

92GreenGT

PEAT
Founding Member
Jul 18, 2002
2,085
1
46
Big Stone Gap, VA
Jun 29, 2004
#9
  • Jun 29, 2004
  • #9
88stangmangt said:
dont worry man i was wrong but you still got first dibs on driveing my car when it is done.
Click to expand...
Sweet.

to answer your question, listen to Dave.

that was easy wasnt it.
Click to expand...

Oh yeah, Hey btw man, I put in a 180 degree thermostat and my 31x19 Griffin rad is supposed to be here in the morning. So if I get everything installed, I will let ya know how it cools.

Dave
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
34
129
Jun 29, 2004
#10
  • Jun 29, 2004
  • #10
92GreenGT said:
Sweet.



Oh yeah, Hey btw man, I put in a 180 degree thermostat and my 31x19 Griffin rad is supposed to be here in the morning. So if I get everything installed, I will let ya know how it cools.

Dave
Click to expand...
cool, let us know. hope it works well!
 
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