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  1. #1
    Ski Hacks MG's Avatar
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    Piston/Compression question: 2004 GTX vs. 2010 RXP

    Can anyone tell me if the compression ratios are the same on the 2004 GTX S/C pistons vs. the 2010 RXP pistons? Am I correct that they are both 8.4:1?


  2. #2
    mikelytle1077's Avatar
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    the 185 cast pistons are 8:1:1 and the scic engines are 8:4:1

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  4. #3
    Ski Hacks MG's Avatar
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    The 2010 RXT-X pistons are forged, correct? And they will drop into my '04 block (after re-hone and decking, correct)?

  5. #4
    westy's Avatar
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    yes correct

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  7. #5
    Ski Hacks MG's Avatar
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    Thanks.

  8. #6
    Ski Hacks MG's Avatar
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    Would bumping up the compression by .3:1 be anything to get excited about? I am going to drop these 2010 pistons in my 2004 block.

  9. #7
    boost junkie skidoochris's Avatar
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    not much, but a set of cp 9.5:1 you could feel

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