Compression Ratio for Blown Alky

Discussion in 'PSI Superchargers Tech Questions' started by OwnBlock, Aug 8, 2007.

  1. OwnBlock

    OwnBlock Member

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    What is a good and reasonably safe compression ratio for a blown alky 4.1 stoke x 4.440 bore dragster motor with 16/71 H-H @ 36% and hemi heads.
    Heads have some quench.
    Also what deck height.
    Gasket .040
     
    #1
    OwnBlock, Aug 8, 2007
  2. Ken Sitko

    Ken Sitko Super Comp

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    Safe (relatively) compression ratio is 11.2 to 11.4, after that watch your timing and your fuel system closely by monitoring sideways crush on the bearings and heat on the spark plugs.
     
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    Ken Sitko, Aug 14, 2007

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