Compression vs HP
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Compression vs HP



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This springs Engine Masters magazine has a neat article by Steve Dulcich on  
the effects of compression ration to engine output.  Used a .030 over 440  
with a 230/238 degree cam.
 
Compression        HP        TQ
 
11 to  1                500        531
10 to  1                483        518
 9 to  1                460        505
 8 to  1                440        486
 
Looks like each point of compression is worth about 20 HP.  Steve used  
Milodon soft copper headgaskets and had them stacked 1/4" to get the motor from  11 
down to 8 to one.    Joe

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