SKU: SRP142023

BRAND: SRP Pistons

400 Small Block Chevy - Dome Forged Piston
405 c.i., 4.145" bore, 3.750" stroke, 6.000" rod length, 4.0cc dome volume

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This piston set is designed for use with most 23° heads, it is forged from premium 2618 aluminium alloy. Features Forged Side Reliefs (FSR) for reduced weight and reduced piston set-to-wall friction. Piston set accepts 1/16, 1/16, 3/16 rings.


  • Spiro Lock: 927-042-CS
  • Straight Wall Pin: 927-2750-15-51S(130g)
  • Pin fitting

Specifications :

  • Part #: SRP142023
  • CID: 405
  • Bore: 4.145
  • Stroke: 3.750
  • Rod Length: 6.000
  • Compression Height: 1.125
  • Compression Ratio with 58cc chamber volume: 14.0
  • Compression Ratio with 64cc chamber volume: 12.8
  • Compression Ratio with 70cc chamber volume: 11.8
  • Dome Volume: 4.0cc
  • Gram Weight: 437
  • Footnote: Oil Rail Support is Included
  • Oversize: .020
  • Recommended Ring Set (Check Proseal listing to determine oil ring tension): S100S8-4145-5

SRP Pistons was founded in 1997 by JE Pistons, the world's largest manufacturer of forged racing pistons. The idea was simple, to create a high quality forged piston at an affordable price. Every SRP forging was created with quality, performance and affordability in mind. By designing dedicated forgings, the pistons became both lighter and stronger while machining time and scrap aluminium were drastically reduced. These factors have reduced the price of SRP Pistons and contributed to their success. Today, over 400 different piston part numbers comprise the SRP product lineup, including Chevy, Ford, Chrysler, Honda and more.

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