Product Description


This item is for eight (8) .030 over bore Silvolite hypereutectic flat top pistons for Ford 460ci big block V-8 engines. P/N (8) 3191HC-030. These pistons may be used as a performance upgrade in 460ci engines originally equipped with dished pistons.


  • Bore: 4.390 in. (at .030 bore)
  • Stroke: 3.850 in. (stock)
  • Connecting Rod Length: 6.605 in. (stock); rods NOT included
  • Piston Top Style: Flat top with 2-valve reliefs
  • Piston Head Volume: +4.20cc
  • Compression Height: 1.752 in.
  • Piston Material: Hypereutectic aluminum
  • Wrist Pin Diameter: 1.040 in.; pins included
  • Wrist Pin Style: Press-fit only
  • Ring Land Sizes: 5/64-5/64-3/16 (oil ring); rings not included
  • Notes: Coated skirts
  • Usage: Street and mild strip; up to 75HP nitrous
  • RPM Range: Idle - 6,000
  • Compression Ratio (approximate): 10.9:1 w/72cc; 10.4:1 w/77cc; 8.9:1 w/97cc

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