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$377.99
$339.99
KB Chevy 400 Hypereutectic Pistons, Flat Top, 5.7 Rod
KB Chevy 400 Hypereutectic Pistons, Flat Top, 5.7 Rod

KB Chevy 400 Hypereutectic Pistons, Flat Top, 5.7 Rod

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KB Chevy 400 Hypereutectic Pistons, Flat Top, 5.7 Rod
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KB Chevy 400 Hypereutectic Pistons, Flat Top, 5.7 Rod
KB Chevy 400 Hypereutectic Pistons, Flat Top, 5.7 Rod
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Part # 474125
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Important Messages:

  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.

Details

Piston Material:
Hypereutectic Aluminum
Piston Style:
Flat Top w/ 2 valve reliefs
Piston Diameter:
Select Oversize to see
Connecting Rod Length:
5.700"
Piston Ring Style:
A
Stroke:
3.75"
Wrist Pin Diameter:
.9272"
Piston Weight:
564 grams
Wrist Pin Weight:
145 grams
Compression 58cc =:
12.3 : 1
Compression 64cc =:
11.4 : 1
Compression 76cc =:
10.0 : 1
Sold in Quantity:
Set
MFG. Part #:
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GTIN Code:
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Info

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)

474-125 Instructions (PDF)

Item Details

C/R 58cc=12.3, 64cc=11.4, 76cc=10.0
Piston/Pin Weight: 564 g
Rod Length: 5.7", Ring Style: A

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

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