6.0 Lq4 Comp ratio

Discussion in 'Engine Topic' started by Justin Berke, Nov 15, 2019.

  1. Justin Berke

    Justin Berke New Member

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    So I'm trying to decide what pistons and rods I should go with to keep the stock comp ratio with the 317 heads. Here's what I found: BLS1111-030-8 pistons and 6125O3DL19 rods. Would this keep the stock compression ratio? If not what pistons would be best with the .6125 rods? Thanks
     
  2. John Wright

    John Wright Veteran Member Lifetime Gold Member

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    I thought the stock rod was 6.098"


    Wait, you swapped to the 6.125 to get closer to zero deck.
     
  3. 1980RS

    1980RS Veteran Member

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    If I were to build a 6.0 my first choice for heads would be a set of ported 5.3's, smaller ports, higher velocity means more power plus higher compression.
     
  4. Justin Berke

    Justin Berke New Member

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    Yes the stock rod is 6.098, oh and I forgot to mention, the build is going to be for boost, pt88 turbo most likely
     
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  5. SRGN

    SRGN Veteran Member

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    If anything, I'd run a shorter rod to keep the pin further from the crown on a boosted build. I'd also look into a slightly dished piston, the combo you posted is more ideal for a Max effort NA build. The compression with 5.3 heads and those pistons would be a little higher than I prefer for a boosted application, but to each their own.
     

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