Kb215 wrist pin diameter

Big Block A body Tech

  1. Heywodja

    Heywodja The Heartbeat Stops Here FABO Gold Member

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    Looking my into a 451 build with KB215 pistons & 440 rods. They list ly rods @ .990 pin diameter but these pistons say 1.09?

    Is this an inner vs outer diameter measurement?

    Thanks
     
  2. jas0162

    jas0162 Well-Known Member

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    The stock rods (LY) have the 1.09 diameter pin. I looked at the KB 215 pistons on summits site and they are advertised as being 1.094, so one could assume they will work well with the stock type rods. The .990 size is common for aftermarket setups and is the standard big block chevy diameter. These measurements are the inside diameter.
     
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    • Heywodja

      Heywodja The Heartbeat Stops Here FABO Gold Member

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      Thanks!
       
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