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Sealed Power H625CP20

Hypereutectic Piston Chevy 454ci 7.4L V8 +020

Sealed Power H625CP20


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Estimated ship date 01/25/18 if Ordered Today
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Sealed Power H625CP20 Hypereutectic Piston Chevy 454ci 7.4L V8 +020 $52.99
Hypereutectic Piston
  • Chevy 454ci 7.4L V8 1970-2000
  • 4.270" Bore (+.020)
  • Flat Top w/2 Valve Reliefs
  • 1/pkg.

  • Sealed Power H625CP20 Details

    Big Block Chevy

    Technical Specs:
  • Material: Hypereutectic
  • Bore: 4.270'' (108.459mm)
  • Piston Top: -2.0cc Flat Top w/2 Valve Reliefs
  • Compression Height: 1.640"
  • Rod Length: 6.135
  • Stroke: 4.000"
  • Compression Ring Groove: 5/64"
  • Second Ring Groove: 5/64"
  • Oil Ring Groove Width: 3/16"
  • Full Length: N/A
  • Pin Size: 0.990" O.D. (25.146mm)
  • Pin Type: Press-Fit or Floating
  • Skirt Type: DUROSHIELD Coated
  • Piston Skirt Clearance: 0.0015"
  • Notes: Piston Rings Not Included.

  • For street, bracket racing, and oval track applications, these aluminum hypereutectic pistons feature an antifriction skirt coating that is highly resistant to scuffing and wear. They operate with tight bore clearances and work perfectly with normal ring end gaps.
    Note: All compression ratios are approximate and figured with a gasket thickness representative of those commonly used.

  • Helps improve cylinder sealing for less blow-by
  • Retains standard ring gaps in top groove
  • DUROSHIELD skirt-coated piston
  • Moly-graphite coating extends engine life
  • Reduces friction for higher fuel economy
  • Prevents damage from inadequate lubrication on startup

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