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LS1 ,LS2 pistons

This is a discussion on LS1 ,LS2 pistons within the Internal Engine forums, part of the LSx Technical Help Section category; Can someone tell me the difference between LS1 6.0 pistons to a LS2 piston?? They have the same bore size ...

  1. #1
    Junior Member
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    pewter
    2000 silverado 4x4

    LS1 ,LS2 pistons

    Can someone tell me the difference between LS1 6.0 pistons to a LS2 piston?? They have the same bore size so was just curious as what's the difference.

  2. #2
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    Black
    2000 TransAm WS6

    There wasnt a LS1 6.0
    all LS1's were 5.7's
    now if your talking about the LQ4 and LQ9 motors (Iron Block)
    I think the LQ4 is a dished piston and the LQ9 is a flat top and so is the LS2 and there the same bore
    Mike Berry
    2000 TransAm WS6 A4
    ASC#6552

  3. #3
    Senior Member slims00ls1z28's Avatar
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    2005 GTO M6 Black
    2000 Z28 A4 Red

    The LS1 has a 3.9 in bore where the LS2's have a 4.0 the strokes are all the same so the only difference in the 2 would be the diameter.

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