Keith Black KB125.030 Chevy 400 Hyperutectic Flat Top Pistons .030
400 Chevy Small Block V8, Flat Top w/ 2 valve reliefs Piston Style, 3.750" Stroke
- Features fully machined crowns and valve reliefs
- Has drilled oil drain backs and full floating wrist pins
- Use of reflective alloy allows 2% power increase
- Special quench dome technology minimizes deterioration
- Manufactured from 390 hypereutectic aluminum alloy
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)
Item DetailsC/R 58cc=12.3, 64cc=11.4, 76cc=10.0
Piston/Pin Weight: 564 g
Rod Length: 5.7", Ring Style: A
- 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
474-125 Instructions (PDF)
- Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
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