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Wiseco 2618 oy Forged Pistons; Open Chamber Dome; 540 & Stroker Pro Series; 38cc Dome; Nitrous Compatible; Open Chamber; Fits 9.750 Deck; Individual/Replacement Piston; Recommended RingSet: W860F8-4500-5; Rings Sold Separate; Includes Pins: S462; Skirt CHEVROLET 540 BIG BLOCK


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Part #: 6426BS
Notes: 2618 Alloy Forged Pistons
Open Chamber Dome
540 & Stroker Pro Series
38cc Dome
Nitrous Compatible
Open Chamber
Fits 9.750 Deck
Individual/Replacement Piston
Recommended RingSet: W860F8-4500-5
Rings Sold Separate
Includes Pins: S462
Skirt
MSRP: $115.56
Your Price: $113.19
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Specs

Bore 4.5
Comp Height 1.27
Comp Ratio @ 110CC :1
Comp Ratio @ 114CC :1
Comp Ratio @ 119CC :1
Comp Ratio @ 123CC :1
Gram Weight 635

This Item Also Available In

Part Number Price Notes & Specs
6426B3 $116.24 Notes 2618 Alloy Forged Pistons
Open Chamber Dome
540 & Stroker Pro Series
38cc Dome
Nitrous Compatible
Open Chamber
Fits 9.750 Deck
Individual/Replacement Piston
Recommended RingSet: W860F8-4530-5
Rings Sold Separate
Includes Pins: S462
Skirt
Bore 4.53
Comp Ratio @ 110CC :1
Comp Ratio @ 114CC :1
Comp Ratio @ 119CC :1
Comp Ratio @ 123CC :1
Gram Weight 640
6426B6 $115.48 Notes 2618 Alloy Forged Pistons
Open Chamber Dome
540 & Stroker Pro Series
38cc Dome
Nitrous Compatible
Open Chamber
Fits 9.750 Deck
Individual/Replacement Piston
Recommended RingSet: W860H8-4560-5
Rings Sold Separate
Includes Pins: S462
Full Skirt
Bore 4.56
Comp Ratio @ 110CC 14.5:1
Comp Ratio @ 114CC 13.9:1
Comp Ratio @ 119CC 13.2:1
Comp Ratio @ 123CC 12.7:1
Dome Volume 38
Gram Weight 649
Rod 6.385
Stroke 4.25
K426B100 $763.14 Notes 2618 Alloy Forged Pistons
Open Chamber Dome
540 & Stroker Pro Series
38cc Dome
Nitrous Compatible
Open Chamber
Fits 9.750 Deck
Set of 8 Pistons
Recommended RingSet: W860L8-4600-5
Rings Sold Separate
Includes Pins: S462
Round Skirt
Bore 4.6
Comp Ratio @ 110CC 14.5:1
Comp Ratio @ 114CC 13.9:1
Comp Ratio @ 119CC 13.2:1
Comp Ratio @ 123CC 12.7:1
Dome Volume Hollow
Gram Weight 670
Rod 6.8
Stroke 4.25
K426B6 $740.68 Notes 2618 Alloy Forged Pistons
Open Chamber Dome
540 & Stroker Pro Series
38cc Dome
Nitrous Compatible
Open Chamber
Fits 9.750 Deck
Set of 8 Pistons
Recommended RingSet: W860H8-4560-5
Rings Sold Separate
Includes Pins: S462
Full Skirt
Bore 4.56
Comp Ratio @ 110CC 14.5:1
Comp Ratio @ 114CC 13.9:1
Comp Ratio @ 119CC 13.2:1
Comp Ratio @ 123CC 12.7:1
Dome Volume 38
Gram Weight 649
Rod 6.385
Stroke 4.25
6426B100 $115.48 Notes 2618 Alloy Forged Pistons
Open Chamber Dome
540 & Stroker Pro Series
38cc Dome
Nitrous Compatible
Open Chamber
Fits 9.750 Deck
Individual/Replacement Piston
Recommended RingSet: W860L8-4600-5
Rings Sold Separate
Includes Pins: S462
Round Skirt
Bore 4.6
Comp Ratio @ 110CC 14.5:1
Comp Ratio @ 114CC 13.9:1
Comp Ratio @ 119CC 13.2:1
Comp Ratio @ 123CC 12.7:1
Dome Volume Hollow
Gram Weight 670
Rod 6.8
Stroke 4.25
6426B110 $115.48 Notes 2618 Alloy Forged Pistons
Open Chamber Dome
540 & Stroker Pro Series
38cc Dome
Nitrous Compatible
Open Chamber
Fits 9.750 Deck
Individual/Replacement Piston
Recommended RingSet: W860H8-4610-5
Rings Sold Separate
Includes Pins: S462
Skirt
Bore 4.61
Comp Ratio @ 110CC :1
Comp Ratio @ 114CC :1
Comp Ratio @ 119CC :1
Comp Ratio @ 123CC :1
Gram Weight 676
K426B3 $763.14 Notes 2618 Alloy Forged Pistons
Open Chamber Dome
540 & Stroker Pro Series
38cc Dome
Nitrous Compatible
Open Chamber
Fits 9.750 Deck
Set of 8 Pistons
Recommended RingSet: W860F8-4530-5
Rings Sold Separate
Includes Pins: S462
Skirt
Bore 4.53
Comp Ratio @ 110CC :1
Comp Ratio @ 114CC :1
Comp Ratio @ 119CC :1
Comp Ratio @ 123CC :1
Gram Weight 640
K426BS $763.14 Notes 2618 Alloy Forged Pistons
Open Chamber Dome
540 & Stroker Pro Series
38cc Dome
Nitrous Compatible
Open Chamber
Fits 9.750 Deck
Set of 8 Pistons
Recommended RingSet: W860F8-4500-5
Rings Sold Separate
Includes Pins: S462
Skirt
Bore 4.5
Comp Height 1.27
Comp Ratio @ 110CC :1
Comp Ratio @ 114CC :1
Comp Ratio @ 119CC :1
Comp Ratio @ 123CC :1
Gram Weight 635
K426B110 $763.14 Notes 2618 Alloy Forged Pistons
Open Chamber Dome
540 & Stroker Pro Series
38cc Dome
Nitrous Compatible
Open Chamber
Fits 9.750 Deck
Set of 8 Pistons
Recommended RingSet: W860H8-4610-5
Rings Sold Separate
Includes Pins: S462
Skirt
Bore 4.61
Comp Ratio @ 110CC :1
Comp Ratio @ 114CC :1
Comp Ratio @ 119CC :1
Comp Ratio @ 123CC :1
Gram Weight 676

All Fitments

CHEVROLET
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
1970 - 2000 540 BIG BLOCK ALL ALL ALL ALL ALL ALL

Product Description

World renowned for their work building race winning pistons, Wiseco utilizes experience from a diverse background of the most sophisticated engines in such venues as Formula 1, Indy Racing League (IRL), NHRA Pro Stock, Moto GP, AMA Superbike, AMA Motocross and Supercross to design and manufacture the highest technology pistons available.

Features

  • Valve Pocket designs that allow maximum flow around valve, also allowing oversized valves and high lift cams to be utilized.
  • Piston Crown shapes designed to promote maximum Intake Charge efficiency through scavenging mixture “Cross Flow” during intake and
    exhaust valve overlap. More fuel and air equals more horsepower!
  • Piston Domes designed for optimal quench during the compression/ combustion cycle, resulting in resistance to detonation and preignition.
    The end result is longer engine life and increased horsepower potential.
  • Precision machined ring grooves with proper orifice/accumulator volume feature calculated groove root diameters and axial widths, providing
    excellent surface finish and flatness, maximum ring seal and minimized blow-by and oil consumption.
  • World class, ISO Certified, forging facility that utilizes the latest technologies – Featuring complex forged shapes, advanced materials, and feature-aligned grain flow technology.
  • Complex Piston skirt profiles that reduce power robbing friction, yet promote stability in the bore for optimum ring seal.

ArmorGlide Skirt Coating
Wiseco’s new ArmorGlide skirt coating is the result of testing, development, and benchmarking through our in-house dyno program. The outcome – minimized friction, maximum horsepower, and improved wear resistance.

Not only is ArmorGlide a high-tech lubricant that reduces friction, but it also allows the piston to be fitted tighter within the bore than a non-coated piston. Better ring seal reduces noise from piston rock. ArmorGlide is being applied to selected pistons.

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