SPH552CP 030


inc. GST

SKU: SPH552CP 030

BRAND: Speed Pro

454 ci BB Chev - Dome Top Hypereutectic Pistons
489 c.i., 4.280" bore, 4.250 stroke, 6.135" rod length, +11.2cc dome volume

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Available on both hypereutectic and POWERFORGED pistons, DUROSHIELD is an exclusive moly-graphite skirt
coating that extends engine life and essentially eliminates scuffing. This technologically advanced coating is precisely applied to the piston through a computer-controlled process.

DUROSHIELD skirt coated pistons:

  • Reduce friction for increased fuel economy and horsepower
  • Essentially eliminate scuffing and wear
  • Prevent damage from inadequate lubrication, especially at start-up
  • Improve cylinder sealing for less blow-by and more power
  • Require no increase in skirt clearance

Piston Specifications :

  • CID: 489
  • Bore: 4.280
  • Stroke: 4.250
  • Rod Length: 6.135
  • Compression Height: 1.525
  • Compression Ratio with 100cc chamber volume: 10.62
  • Compression Ratio with 117cc chamber volume: 9.34
  • Compression Ratio with 124cc chamber volume: 8.88
  • Dome Volume: +11.2cc
  • Pin Type: Press or Float
  • Recommended Ring Set: Moly - SPE233K 030, STD Fit - SPR9905 030, File Fit - SPR9590 035
  • Coated skirt

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