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Big Block Engine Piston

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"Unusual" comes into play in the piston design. The piston has an exceptionally short compression height of 1.092 inch, and carries only two rings. A 1.2mm compression ring is backed only with a 3mm oil ring assembly. Lateral gas ports improve the compression seal.
The Big Wedge - Mopar Big-Block Engine

 "Unusual" comes into play in the piston design. The piston has an exceptionally short compression height of 1.092 inch, and carries only two rings. A 1.2mm compression ring is backed only with a 3mm oil ring assembly. Lateral gas ports improve the compression seal.  View Related Article

 

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