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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
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Compression ratio... Stock vs. HCI setup

  • Thread starter Thread starter Strype
  • Start date Start date Jun 30, 2010

Strype

Cuthbert catcher
Founding Member
May 11, 1999
61
34
104
Huntsvegas, AL
Jun 30, 2010
#1
  • Jun 30, 2010
  • #1
Hey guys,

My 93 notch has GT40X aluminum heads (58cc combustion chamber) and a stock bottom end (65,900 miles). From what I gather, the stock compression ratio is 9:1 and the E7 heads run a 60-62 cc combustion chamber.

I know that even my head gasket can change the compression, but what is a good guesstimate on my compression ratio?


I don't know if it helps but I am using stock push rod length, 1.6 roller rockers, roller lifters and a b303 cam.
 

bwguardian

Member
May 17, 2010
50
0
6
Houston, Tx.
Jun 30, 2010
#2
  • Jun 30, 2010
  • #2
You should be close to 9.5 to 1...I just finished a build with 58cc GT40p heads and a E-303 cam on a stock bottom end with about twice the miles yours has.
 

Strype

Cuthbert catcher
Founding Member
May 11, 1999
61
34
104
Huntsvegas, AL
Jul 1, 2010
#3
  • Jul 1, 2010
  • #3
Awesome thanks!

I was just wondering
 
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