KB Chevy 400 Hyperutectic Pistons, Flat Top, 6.0 Rod
KB Chevy 400 Hyperutectic Pistons, Flat Top, 6.0 Rod
Keith Black

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#474128

KB Chevy 400 Hyperutectic Pistons, Flat Top, 6.0 Rod

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$445.99

/set

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Product Summary

Flat Top w/ 2 valve reliefs Piston Style, 3.750" Stroke

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    Key Specs

    MFG. Part #Select Oversize
    Piston StyleFlat Top w/ 2 valve reliefs
    Piston MaterialHypereutectic Aluminum
    Wrist Pin IncludedYes
    Wrist Pin StylePress-Fit or Floating
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    Need To Know

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    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.

    • 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).

    Item Details

    C/R 58cc=12.3, 64cc=11.64, 76cc=10.0
    Piston/Pin Weight: 475 g
    Rod Length: 6.0", Ring Style: C

    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

    CARB Warning

    For race/ off road use only

    Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.
    CA Prop 65
    CARB warning

    Specifications

    KEY SPECS
    MFG. Part #Select Oversize to see
    BrandKeith Black
    Piston StyleFlat Top w/ 2 valve reliefs
    Piston MaterialHypereutectic Aluminum
    Wrist Pin IncludedYes
    Wrist Pin StylePress-Fit or Floating
    GENERAL
    Piston DiameterSelect Oversize to see
    Stroke3.750"
    Connecting Rod Length6.000"
    Piston Weight475 grams
    Piston Ring StyleC
    Wrist Pin Diameter0.9272"
    Wrist Pin Weight145 grams
    Top Ring Thickness1/16"
    Second Ring Thickness1/16"
    Oil Ring Thickness3/16"
    Compression 58cc =12.3 : 1
    Compression 64cc =11.6 : 1
    Compression 76cc =10.0 : 1
    GTIN CodeSelect Oversize to see
    Sold in QuantitySet

    Ratings & Reviews

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    Great product

    4.0

    14 years ago

    Air Vegas

    Las Vegas, NV

    Verified

    Good pistons for the money, shame they are not forged but the machining is very nice. Hate spiral locks though. Should change them to c clips

    Would Recommend

    Showing 1 of 1 reviews

    Questions & Answers

    1 Question • 1 Answer

    How much compression with 49 cc combustion chamber

    by Kayla

    • 11 years ago

    1 answer

    View Answer

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