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LS Crank in GSR block, what rods and pistons?

Discussion in 'Engine Building' started by ek_jeremy, Feb 29, 2004.

  1. ek_jeremy

    ek_jeremy Junior Member

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    could you guys tell me what are the advantages and disadvantages of using a ls crank in a gsr block, besides the oil squirters? and also what size rods and what piston for 11.8 compression would provide the best r/s ratio with a micropolished ls crank? thanks for all the help
     
  2. pissedoffsol

    pissedoffsol RETIRED

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    using an LS crank in a gsr block will give you about 30cc more displacement, and thus, more torque.
    the gsr also has a block girdle to support the crank.
    you need to use LS-length rods (oem LS rods won't fit a gsr piston- jdm p30 b16 sir pistons will fit ls rods and will give a low 11:1 ish compression)
    rod/stroke ratio will be the exact same as the ls. figures are in the reference section.
    compression depends on a lot of things- mainly, the head choice, gasket thickness, and all that.
     
  3. malaf393

    malaf393 New Member

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    What bearings would you have to get if you got da ls crank in a gst block would it have to be for ls or gsr I kno main bearing are all the same but what bout da rod bearings?
     
  4. malaf393

    malaf393 New Member

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    Gsr**************
     
  5. B16

    B16 Super Moderator VIP

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    LS rod bearings. LS rod big ends are a different size from the GSR/ITR/CTR. Like you said, mains are the same though.

    You gotta remove the oil squirters too.
     
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