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Part # 474120

KB Chevy 350 Hypereutectic Pistons, Flat Top, 5.7 Rod

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  • Will fit the S/B Chevy 350 c.i. (4.000" bore x 3.48" stroke) engine
  • These pistons are favored for their improved power and reduced scuffing
  • Manufactured from 390 Hypereutectic alloy and have fully machined crowns and valve reliefs

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Product Summary

350, Flat Top w/ 2 valve reliefs Piston Style

  • Will fit the S/B Chevy 350 c.i. (4.000" bore x 3.48" stroke) engine
  • These pistons are favored for their improved power and reduced scuffing
  • Manufactured from 390 Hypereutectic alloy and have fully machined crowns and valve reliefs
  • The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal
  • Pistons are heat treated and offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by

Key Specs

MFG. Part #
BrandKeith Black
Piston StyleFlat Top w/ 2 valve reliefs
Piston MaterialHypereutectic Aluminum

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Details

Keith Black Hypereutectic pistons are favored for their improved power and reduced scuffing. The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal. These T-5 heat treated pistons also offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by.

For S/B Chevy 350 c.i. (4.000" bore x 3.48" stroke).

  • 390 Hypereutectic alloy
  • Fully machined crowns and valve reliefs
  • Drilled oil drain backs
  • Full floating wrist pins
  • Triple wound spiral locks
  • Reflective alloy allows 2% power increase
  • Quench dome technology minimizes deterioration
  • Zero deck quench designs
  • Lightweight wrist pins

Item Details

C/R 58cc=10.9, 64cc=10.2, 76cc=8.9
Piston/Pin Weight: 680 g
Rod Length: 5.7", Ring Style: A

Charts

Specs

  • Comp Height 5.7" Rod -  1.561
  • Comp Height 6.0" Rod -  1.261
  • Pin Diameter -  0.9272

Specifications

KEY SPECS
MFG. Part #
BrandKeith Black
Piston StyleFlat Top w/ 2 valve reliefs
Piston MaterialHypereutectic Aluminum
GENERAL
Piston Diameter
Stroke3.480"
Connecting Rod Length5.700"
Piston Weight535 grams
Piston Ring StyleA
Wrist Pin Diameter0.9272"
Wrist Pin Weight145 grams
Compression 58cc =10.9 : 1
Compression 64cc =10.2 : 1
Compression 76cc =8.9 : 1
GTIN Code
Sold in QuantitySet