SPH860CP 020


inc. GST

SKU: SPH860CP 020

BRAND: Speed Pro

350 ci SB Chev - Flat Top Hypereutectic Pistons
381 c.i., 4.020" bore, 3.750 stroke, 5.700" rod length, -5.0cc 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: 381
  • Bore: 4.020
  • Stroke: 3.750
  • Rod Length: 5.700
  • Compression Height: 1.425
  • Compression Ratio with 64cc chamber volume: 10.35
  • Compression Ratio with 72cc chamber volume: 9.53
  • Compression Ratio with 76cc chamber volume: 9.18
  • Dome Volume: -12.0cc
  • Pin Type: Press or float
  • Recommended Ring Set: Moly - SPE251K 020, STD Fit - SPR9903 020, File Fit - SPR9343 025
  • Coated skirt

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