rockwell ## for 10in clutch

Discussion in 'PSI Superchargers Tech Questions' started by adam, Oct 3, 2007.

  1. adam

    adam New Member

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    what rockwell is best used in alky funny car
    526ci ,, psi at 72 % , 1.70 sumthing first gear to suit australian class aa/fc
    what is the best or most common rockwell every 1 is using
    also is the higher number harder and lower softer ???
    adam
     
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