Blown Hemi Compression Ratio

Discussion in 'PSI Superchargers Tech Questions' started by OKC-Oilie, Apr 6, 2007.

  1. OKC-Oilie

    OKC-Oilie Funny Car

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    Ok, all you guru's: what do you consider SAFE operating limits of Compression Ratio on a supercharged hemi (BAE motor with PSI). I'm talking dynamic ratio here, what's safe? 11:1 or 15:1 or 20:1 ????? I'll even discuss static compression ratio info.
    Wayne
     
    #1
    OKC-Oilie, Apr 6, 2007
  2. blwnaway

    blwnaway Member

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    I would say most guys stay between 11.5 and 12.7 with a roots car and 9.7to 10.5 with a screw.
     
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    blwnaway, Apr 7, 2007

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