DSS 392/ 6.4 Small Block Mopar Hemi Gen III FX Series -18cc Dish Top Gen III Hemi Forged Piston Set 4.085

DSS RACING DSS Racing
SKU #DSS-K1-6845-4085C
390 Small Block Mopar Hemi Gen III, FX 4032 Alloy, Comp Height: 1.21, -18cc Dish Top, PIN: .927, Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.72, ROD: 6.2, Includes matching DSS Racing ring set, Appox Comp Ratio: 65cc-9.72, 74cc-8.94, 85cc-8.16
SKU DSS-K1-6845-4085C
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DSS 392/ 6.4 Small Block Mopar Hemi Gen III FX Series -18cc Dish Top Gen III Hemi Forged Piston Set 4.085

The DSS 392/6.4 Small Block Mopar Hemi Gen III FX Series pistons are engineered for ultimate performance in high-compression applications. These forged pistons are precision-machined for a 4.085-inch bore and offer excellent durability and power gains. Ideal for performance builds, they are designed for the Gen III Hemi engine family, providing superior strength and performance under extreme conditions.

Piston Specifications

  • Piston Top: -18cc Dish Top Gen III Hemi
  • Approximate Compression Ratios:
    • 65cc Chamber: 9.72 to 1
    • 74cc Chamber: 8.94 to 1
    • 85cc Chamber: 8.16 to 1
    *For exact compression, use a compression calculator for precise adjustments.*
  • Engine Compatibility: Mopar Small Block Hemi Gen III
  • Engine Size: 392 - 6.4

Technical Details

  • Cylinder Bore Size: 4.085 in (103.677 mm)
  • Ring Groove Width: 1.2/1.2/3MM
  • Compression Height: 1.210"
  • Pin Diameter: 0.927"
  • Connecting Rod Length: 6.200"
  • Crankshaft Stroke: 3.720"
  • Cylinder Head: Gen III Hemi
  • TDC Assembly Height: 9.270" (Zero Deck Height)

Performance & Compatibility

Designed specifically for high-performance Mopar builds, these pistons are built to withstand high boost and aggressive power applications. Perfect for race or street performance, they ensure maximum compression and performance.

prop-warning
Bore 4.085"
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