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From the side, notice how the wrist pin is close to, but not into, the oil-ring lands. Compared to a stock piston, the wrist-pin location is moved way up into the piston to accommodate the longer rod length. This is a great feature for obtaining extra displacement without creating oil-use problems.
Building Up A 331 Stroker Engine

 From the side, notice how the wrist pin is close to, but not into, the oil-ring lands. Compared to a stock piston, the wrist-pin location is moved way up into the piston to accommodate the longer rod length. This is a great feature for obtaining extra displacement without creating oil-use problems.  View Related Article

 

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