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Sealed Power Hypereutectic Pistons [Big Block Chevy 454]

844-H661CP20


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Sealed Power H661CP20
$271.99
Hypereutectic Pistons
  • 1970-1983 Big Block Chevy 454
  • Bore: 4.270 in. (+.020 in.)
  • Rod: 6.135 in.
  • Flat Top w/2 Valve Reliefs
  • Ring Sizes: 5/64, 5/64, 3/16 in.
  • 8.45 CR w/106.9cc Heads
  • Set of 8
  • Free Shipping - Ships on 12/02/20
    QTY

    Does Sealed Power H661CP20 fit your vehicle?

    Narrow Results

    1977 GMC C35

    • Liter: 7.4
    • SubModel: SIERRA CLASSIC
    • Aspiration: NATURALLY ASPIRATED
    • Fitment Notes: Hypereutectic; 3 Ring Groove Piston; Ring Groove Widths: 5/64, 5/64, 3/16 (in.); 1.625 CD; Flat Head w/2 valve reliefs; DUROSHIELD skirt coated piston; Use in sets only
    • CUI: 454
    • Engine Type: V8 ( 7.4L / 454 )
    • Engine Vin: S

    1974 GMC K25/K2500 PICKUP

    • Liter: 7.4
    • SubModel: BASE
    • Aspiration: NATURALLY ASPIRATED
    • Fitment Notes: Hypereutectic; 3 Ring Groove Piston; Ring Groove Widths: 5/64, 5/64, 3/16 (in.); 1.625 CD; Flat Head w/2 valve reliefs; DUROSHIELD skirt coated piston; Use in sets only
    • CUI: 454
    • Engine Type: V8 ( 7.4L / 454 )
    • Engine Vin: Z

    1970 CHEVROLET TOWNSMAN

    • Liter: 7.4
    • SubModel: BASE
    • Aspiration: NATURALLY ASPIRATED
    • Fitment Notes: Exc. Hi-Perf.; Exc. Spec. Hi-Perf.; Use in sets only; Hypereutectic; 2 Groove(s); 5/64; 1 Groove(s); 3/16; 1.625 CD; Flat Head w/2 valve reliefs; Use E424K30 ring set for H661CP100; DUROSHIELD skirt coated piston; .020" Oversize
    • CUI: 454
    • Engine Type: V8 ( 7.4L / 454 )
    • Engine Vin: -

    1979 GMC C1500 SUBURBAN

    • Liter: 7.4
    • SubModel: SIERRA CLASSIC
    • Aspiration: NATURALLY ASPIRATED
    • Fitment Notes: Use in sets only; Hypereutectic; 2 Groove(s); 5/64; 1 Groove(s); 3/16; 1.625 CD; Flat Head w/2 valve reliefs; Use E424K30 ring set for H661CP100; DUROSHIELD skirt coated piston; .020" Oversize
    • CUI: 454
    • Engine Type: V8 ( 7.4L / 454 )
    • Engine Vin: S

    1976 GMC C25

    • Liter: 7.4
    • SubModel: SIERRA CLASSIC
    • Aspiration: NATURALLY ASPIRATED
    • Fitment Notes: Use in sets only; Hypereutectic; 2 Groove(s); 5/64; 1 Groove(s); 3/16; 1.625 CD; Flat Head w/2 valve reliefs; Use E424K30 ring set for H661CP100; DUROSHIELD skirt coated piston; .020" Oversize
    • CUI: 454
    • Engine Type: V8 ( 7.4L / 454 )
    • Engine Vin: Y

    1974 GMC K35/K3500 PICKUP

    • Liter: 7.4
    • SubModel: BASE
    • Aspiration: NATURALLY ASPIRATED
    • Fitment Notes: Hypereutectic; 3 Ring Groove Piston; Ring Groove Widths: 5/64, 5/64, 3/16 (in.); 1.625 CD; Flat Head w/2 valve reliefs; DUROSHIELD skirt coated piston; Use in sets only
    • CUI: 454
    • Engine Type: V8 ( 7.4L / 454 )
    • Engine Vin: L

    1978 GMC C15

    • Liter: 7.4
    • SubModel: BASE
    • Aspiration: NATURALLY ASPIRATED
    • Fitment Notes: Hypereutectic; 3 Ring Groove Piston; Ring Groove Widths: 5/64, 5/64, 3/16 (in.); 1.625 CD; Flat Head w/2 valve reliefs; DUROSHIELD skirt coated piston; Use in sets only
    • CUI: 454
    • Engine Type: V8 ( 7.4L / 454 )
    • Engine Vin: S

    1979 CHEVROLET C20

    • Liter: 7.4
    • SubModel: CUSTOM DELUXE
    • Aspiration: NATURALLY ASPIRATED
    • Fitment Notes: Hypereutectic; 3 Ring Groove Piston; Ring Groove Widths: 5/64, 5/64, 3/16 (in.); 1.625 CD; Flat Head w/2 valve reliefs; DUROSHIELD skirt coated piston; Use in sets only
    • CUI: 454
    • Engine Type: V8 ( 7.4L / 454 )
    • Engine Vin: S

    1979 GMC K3500

    • Liter: 7.4
    • SubModel: SIERRA GRANDE
    • Aspiration: NATURALLY ASPIRATED
    • Fitment Notes: Hypereutectic; 3 Ring Groove Piston; Ring Groove Widths: 5/64, 5/64, 3/16 (in.); 1.625 CD; Flat Head w/2 valve reliefs; DUROSHIELD skirt coated piston; Use in sets only
    • CUI: 454
    • Engine Type: V8 ( 7.4L / 454 )
    • Engine Vin: S

    1976 GMC C25 SUBURBAN

    • Liter: 7.4
    • SubModel: BASE
    • Aspiration: NATURALLY ASPIRATED
    • Fitment Notes: Use in sets only; Hypereutectic; 2 Groove(s); 5/64; 1 Groove(s); 3/16; 1.625 CD; Flat Head w/2 valve reliefs; Use E424K30 ring set for H661CP100; DUROSHIELD skirt coated piston; .020" Oversize
    • CUI: 454
    • Engine Type: V8 ( 7.4L / 454 )
    • Engine Vin: S

    1976 GMC C15

    • Liter: 7.4
    • SubModel: SIERRA GRANDE
    • Aspiration: NATURALLY ASPIRATED
    • Fitment Notes: Use in sets only; Hypereutectic; 2 Groove(s); 5/64; 1 Groove(s); 3/16; 1.625 CD; Flat Head w/2 valve reliefs; Use E424K30 ring set for H661CP100; DUROSHIELD skirt coated piston; .020" Oversize
    • CUI: 454
    • Engine Type: V8 ( 7.4L / 454 )
    • Engine Vin: Y

    1981 CHEVROLET C20

    • Liter: 7.4
    • SubModel: DELUXE
    • Aspiration: NATURALLY ASPIRATED
    • Fitment Notes: Hypereutectic; 3 Ring Groove Piston; Ring Groove Widths: 5/64, 5/64, 3/16 (in.); 1.625 CD; Flat Head w/2 valve reliefs; DUROSHIELD skirt coated piston; Use in sets only
    • CUI: 454
    • Engine Type: V8 ( 7.4L / 454 )
    • Engine Vin: W
    Some parts are not legal for use in California or other states with similar laws / regulations

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    Electrical Cords

    WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.