DSS 392/ 6.4 Small Block Mopar Hemi Gen III FX Series -12cc Dish Top Gen III Hemi Forged Piston Set 4.090

DSS RACING DSS Racing
SKU #DSS-K1-6833-4090
391 Small Block Mopar Hemi Gen III, FX 4032 Alloy, Comp Height: 1.21, -12cc Dish Top, PIN: .945, 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-10.36, 74cc-9.47, 85cc-8.59
SKU DSS-K1-6833-4090
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DSS 392/ 6.4 Small Block Mopar Hemi Gen III FX Series -12cc Dish Top Gen III Hemi Forged Piston Set 4.090

Upgrade your Mopar Hemi engine with DSS's high-performance forged piston set, designed for strength, durability, and precision. Engineered for the Gen III Hemi 392/6.4, these pistons deliver optimized performance and reliability.

Piston Specifications

  • Piston Top: -12cc Dish Top Gen III Hemi
  • Approximate Compression Ratios:
    • 65cc Chamber: 10.36 to 1
    • 74cc Chamber: 9.47 to 1
    • 85cc Chamber: 8.59 to 1
    *Use a compression calculator for precise adjustments.*
  • Engine Brand: Mopar
  • Engine Family: Small Block Mopar Hemi Gen III
  • Engine Size: 392 - 6.4

Technical Details

  • Cylinder Bore Size: 4.090 in (103.804 mm)
  • Ring Groove Width: 1.2/1.2/3MM
  • Compression Height: 1.210"
  • Pin Diameter: 0.945"
  • Connecting Rod Length: 6.200"
  • Crankshaft Stroke: 3.720"
  • Cylinder Head: Gen III Hemi
  • TDC Assembly Height: 9.270" (Zero Deck Height)
prop-warning
Bore 4.090"
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