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Wiseco K490B125 Quick 8 Series Forged Piston Set BBC 582 4.625 Bore Gas Ported Nitrous

(Chevrolet Corvette 1970-74, Impala 1970-76, Malibu 1973-75, C1500 1990-93, Chevelle 1971-73, Blazer 1973, C10 Pickup 1973-74, Caprice 1970-76 + 48 more models)

Manufacturer

Part Number

K490B125
Sale Price

$1,137.99

Estimated ship date Tuesday, November 24

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Fitment guaranteed

Fitment guaranteed

Product Details
2618 Alloy Forged Pistons
Quick 8 Series
12-14deg Solid Dome
Gas Ported
Nitrous Compatible
Fits 9.750 Deck
Set of 8 Pistons
Recommended RingSet: W77008-4625-5
Rings Sold Separate
Includes Pins: S462
Strutted Skirt

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
Wisecos 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.

Products specifications

Fits

Chevrolet Corvette 1970-74, Impala 1970-76, Malibu 1973-75, C1500 1990-93, Chevelle 1971-73, Blazer 1973, C10 Pickup 1973-74, Caprice 1970-76, C10 1975-80, El Camino 1970-75, K2500 1991-2000, Express 3500 1996-2000, C3500 1988-2000 + 43 more models

Bore

4.625

Comp Height

1.215

Comp Ratio @ 61CC

15.7 flat top:1

Comp Ratio @ 63CC

15.4 flat top:1

Comp Ratio @ 67CC

14.7 flat top:1

Comp Ratio @ 80CC

13.0 flat top:1

Dome Volume

6cc solid D / -6cc cut to FT

Rod

6.385

Stroke

4.375

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