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KB Chevy 400 Hyperutectic Pistons, .150 Dome, 6.0 Rod

Price:$469.99
Item #:
474129
Item Details:
C/R 58cc=14.1, 64cc=13.0, 76cc=11.2
Piston/Pin Weight: 645 g
Rod Length: 6.0", Ring Style: C
KB Chevy 400 Hyperutectic Pistons, .150 Dome, 6.0 Rod
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Keith Black Hyperutectic 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.

  • 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

For Chevy 400 c.i. (4.125" bore x 3.75" stroke).

Ring Style Chart (GIF)

474-129 Instructions (PDF)

  • Comp Height 5.565" Rod -  1.561
  • Comp Height 5.7" Rod -  1.433
  • Comp Height 6.0" Rod -  1.13
  • Pin Diameter -  0.9272
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    • 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 
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    For Chevy 400 c.i.  (4.125" bore x 3.75" 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 
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    Keith Black Hyperutectic 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. 
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    • 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 
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    • Fully machined crowns and valve reliefs 
    • Drilled oil drain backs 
    • Full floating wrist pins 
    • Triple wound spiral locks 
    • Reflective alloy allows 2% power increase 
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    • Zero deck quench designs 
    • Lightweight wrist pins 
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    • 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 
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