KB Chevy 383 Hypereutectic Pistons, Flat Top, 6.0 Rod
350 Chevy Small Block V8, 383 Chevy Small Block V8, Hypereutectic Aluminum Piston Material
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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).
Ring Style Chart (GIF)
474-122 Instructions (PDF)
Item DetailsC/R 58cc=11.9, 64cc=10.9, 76cc=9.6
Piston/Pin Weight: 570 g
Rod Length: 6.0", Ring Style: C
- Comp Height 5.7" Rod - 1.433
- Comp Height 6.0" Rod - 1.13
- Pin Diameter - 0.9272
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