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Street Race Truck More... The Toolbox
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Keith Black KB129.040 Hypereutectic Chevy 400 Pistons/6.0 Rod
Keith Black KB129.040 Hypereutectic Chevy 400 Pistons/6.0 Rod

KB PISTONS 400 w/.150 DOME

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Keith Black KB129.040 Hypereutectic Chevy 400 Pistons/6.0 Rod
KB PISTONS 400 w/.150 DOME
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Part # UP94171
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Important Messages:

  • This product is discontinued.
  • This item ships directly from the manufacturer. It may take an additional business days for KB Pistons to ship this item.
  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
  • This item ships via Ground Shipping only. Expedited and Air shipping options are not available.
  • This item UP94171 is made to order. It will be shipped from our warehouse when it is produced.

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These are Garage Sale priced because they were part of a balanced assembly.

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

Ring Style Chart (GIF)

474-129 Instructions (PDF)

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

Specs

  • 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

NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS   

 

Some parts are not legal for use in California or other states with similar laws/regulations

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