Keith Black KB123.030 .150 Dome 6.0 Rod SBC 383 Hypereutectic Pistons
Keith Black KB123.030 .150 Dome 6.0 Rod SBC 383 Hypereutectic Pistons
Keith Black

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#474123-030

Keith Black KB123.030 .150 Dome 6.0 Rod SBC 383 Hypereutectic Pistons

  • The reflective alloy allows 2% power increase
  • Features fully machined crowns and valve reliefs
  • Has drilled oil drain backs and full floating wrist pins
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Oversize:

.030 Inch

$469.09

/set

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Product Summary

Dome Piston Style, 4.030" Piston Diameter

  • The reflective alloy allows 2% power increase
  • Features fully machined crowns and valve reliefs
  • Has drilled oil drain backs and full floating wrist pins
  • Specially quench dome technology minimizes deterioration
  • Made entirely from 390 Hypereutectic alloy that weighs only 450 grams
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Key Specs

MFG. Part #KB123.030
Piston StyleDome
Piston MaterialHypereutectic Aluminum
Wrist Pin IncludedYes
Wrist Pin StylePress-Fit or Floating
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Keith Black KB123.030 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.

  • 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 S/B Chevy 383 c.i. (4.000" bore x 3.75" stroke).

Item Details

C/R 58=13.4, 64cc=12.3, 76cc=10.7
Piston/Pin Weight: 450 g
Rod Length: 6.0", Ring Style: C

Charts

Specs

  • Comp Height 5.7" Rod -  1.433
  • Comp Height 6.0" Rod -  1.13
  • Pin Diameter -  0.9272

Keith Black KB123.030 Specifications

KEY SPECS
MFG. Part #KB123.030
BrandKeith Black
Piston StyleDome
Piston MaterialHypereutectic Aluminum
Wrist Pin IncludedYes
Wrist Pin StylePress-Fit or Floating
GENERAL
Piston Diameter4.030"
Dome Height.150"
Stroke3.750"
Connecting Rod Length6.000"
Piston Weight450 grams
Piston Ring StyleC
Wrist Pin Diameter0.9272"
Wrist Pin Weight145 grams
Top Ring Thickness1/16"
Second Ring Thickness1/16"
Oil Ring Thickness3/16"
Compression 58cc =13.4 : 1
GTIN Code800745044341
Sold in QuantitySet

Questions & Answers

1 Question • 1 Answer

Can you tell me the rings I need for these? My pistons are .40 over. Also what rod and main bearings to use with your 383 cast crank?

by Wesley

• 8 years ago

1 answer

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