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Product Summary

377, 400, Flat Top w/ 2 valve reliefs Piston Style

    Key Specs

    MFG. Part #
    BrandKeith Black
    Piston StyleFlat Top w/ 2 valve reliefs
    Piston MaterialHypereutectic Aluminum

    Need To Know

    This Product Will Ship Free

    Quick and Easy Returns

    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.

    For Chevy 377 c.i. (4.125" bore x 3.48" stroke x 5.7" rod) and Chevy 400 c.i. (4.125" bore x 3.75" stroke x 5.565").

    • 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

    Item Details

    (377) C/R 58cc=11.5, 64cc=10.7, 76cc=9.4
    (400) C/R 58cc=12.3, 64cc=11.4, 76cc=10.1
    Piston/Pin Weight: 580 g
    Rod Length: 5.7(377), 5.565(400)
    Ring Style: A

    Charts

    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

    Specifications

    KEY SPECS
    MFG. Part #
    BrandKeith Black
    Piston StyleFlat Top w/ 2 valve reliefs
    Piston MaterialHypereutectic Aluminum
    GENERAL
    Piston Diameter
    Stroke3.750"
    Connecting Rod Length5.700"
    Piston Weight580 grams
    Piston Ring StyleA
    Wrist Pin Diameter0.9272"
    Wrist Pin Weight145 grams
    Compression 58cc =11.5 : 1
    Compression 64cc =10.7 : 1
    Compression 76cc =9.4 : 1
    GTIN Code
    Sold in QuantitySet