J281800



$1,652.81

inc. GST


SKU: J281800

BRAND: JE Pistons

400 Small Block Chevy - 13° All Pro / 13.5° GB2000 Flat Top Forged Piston
409 c.i, 4.140" Bore, 3.800" Stroke, 5.850" rod length, -4.5cc dome volume


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These pistons incorporate the results of extensive collaboration with top engine builders. Precision CNC-machined ring grooves now accept 1.2, 1.5, 3.0mm rings for reduced friction, while Lateral Gas Ports have been added for improved ring seal. This new configuration outperforms the competition hands down! Pin upgrade recommended above 700hp.

Includes:

  • Double spiro locks #927-042-CS
  • Pin #927-2750-15-51S (130g)

Features:

  • Double Pin Oilers
  • Lateral Gas Ports
  • Accumulator Grooves

Piston Specifiaction:

  • Make: CHEVROLET
  • Engine:SMALL BLOCK CHEVROLET
  • Bore Diameter: 4.140
  • Compression Height: 1.250
  • Compression Ratio with 40cc chamber volume: 16.5
  • Compression Ratio with 45cc chamber volume: 15.2
  • Compression Ratio with 50cc chamber volume: 14.1
  • Piston Volume: -4.7
  • Cylinder Head: CHEVROLET 13 DEG
  • PistonPin Outside Diameter: 0.927
  • Piston Pin Length: 2.750
  • Piston Pin Material: 5115
  • Ringset Included: No
  • Top Compression Ring Thickness: 0.0475
  • Second Compression Ring Thickness: 0.06
  • Oil Ring Thickness: 0.119
  • Piston Material: 2618
  • Forging Type: Round
  • Piston Avg Weight: 476
  • Pin Wall Thickness: 0.150
  • Piston Type: Dome

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