Product Description


This item is for eight (8) .030 over bore Speed Pro forged 2.4cc dome pistons for Chevrolet 350ci (5.7L) small block V-8 engines; will not fit LS-series engines. P/N (8) L2304AF-030.

Speed Pro forged pistons are manufactured from extruded VMS-75 aluminum alloy that is forged under 3,000 tons of pressure to "near-net" shape. After that, they are machined to their final configuration. These pistons offer excellent strength and durability and are capable of taking the punishment that is dished out on the street and in competition racing.



  • Bore: 4.030 in. (at .030 bore)
  • Stroke: 3.480 in. (stock)
  • Connecting Rod Length: 5.700 in.; rods NOT included
  • Piston Material: Forged aluminum
  • Piston Top Style: Dome with a trough
  • Piston Head Volume: -2.40cc
  • Compression Height: 1.560 in.
  • Wrist Pin Diameter: .927 in.; pins included
  • Wrist Pin Style: Press-fit only
  • Ring Land Thickness: 5/64-5/64-3/16 (oil ring); rings not included
  • Notes: DurOshield coated skirts
  • Usage: Street/strip; up to 150hp nitrous
  • RPM Range: Idle - 7,500 RPM
  • Compression Ratio (approximate): 11.49:1 w/58cc; 10.65:1 w/64cc; 9.33:1 w/76cc


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