Wiseco 6492B100 Professional Series Forged Piston – Chevy Big Block 4.600 in. Bore

(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

6492B100

14 reviews

Sale Price

$172.99

Estimated ship date Friday, November 27

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Show details for Wiseco 6492B100 Professional Series Forged Piston – Chevy Big Block 4.600 in. Bore

Wiseco 6492B100 Professional Series Forged Piston – Chevy Big Block 4.600 in. Bore — image 1

Product Details

The Wiseco 6492B100 is a Professional Series forged racing piston engineered for Chevrolet Big Block applications running a 4.600 in. bore. Constructed from 2618 aluminum alloy for superior tensile strength and heat resistance, this piston is purpose-built for heavy to severe duty race builds where reliability and maximum power output are non-negotiable. It is designed for engines with a 9.750 in. deck height and features a 12–14 degree solid dome crown profile optimized for high-compression, power-adder applications.

Key Specifications:

Bore: 4.600 in.
Compression Height: 1.065 in.
Pin Diameter: 0.990 in. — Includes wrist pin S462
Deck Height: 9.750 in.
Crown: 12–14 degree solid dome (Quick 8 Series)
Material: 2618 forged aluminum alloy
Sold individually (replacement/single piston)
Recommended ring set: W77008-4600-5 (rings sold separately)

Performance Features:

Gas Ported Crown: Gas porting improves ring seal under extreme combustion pressures, reducing blowby and maintaining consistent power delivery at high RPM.
Nitrous Compatible: Engineered to withstand the thermal and mechanical stress of nitrous oxide injection.
Strutted Skirt: Internal strut construction controls thermal expansion for a tighter, more consistent piston-to-wall clearance across a wide temperature range.
Optimized Valve Pockets: Deep, precision-machined valve reliefs accommodate oversized valves and aggressive high-lift camshafts while maximizing flow efficiency.
Dome Geometry: Crown shape is designed to promote optimal quench during the compression/combustion cycle, resisting detonation and pre-ignition for longer engine life and increased horsepower potential.
Precision Ring Grooves: Machined to exacting tolerances with correct orifice and accumulator volumes, delivering excellent ring seal, minimal blowby, and reduced oil consumption.
ISO-Certified Forging Facility: Manufactured in the USA using advanced materials, complex forged shapes, and feature-aligned grain flow technology for maximum strength-to-weight ratio.

ArmorGlide® Skirt Coating:
Wiseco's proprietary ArmorGlide® skirt coating is a high-performance dry film lubricant validated through in-house dyno testing. It reduces friction, improves wear resistance, and allows the piston to be fitted tighter within the bore than an uncoated piston. The result is reduced piston rock noise, a better ring seal, and more of the engine's power reaching the wheels.

Professional Series pistons from Wiseco are engineered, forged, and machined in the USA — delivering the custom-level performance and durability demanded by serious racers and engine builders.

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

4.6

Comp Height

1.065

Comp Ratio @ 61CC

18.3 dome :1

Comp Ratio @ 63CC

17.8 dome :1

Comp Ratio @ 67CC

17.0 dome :1

Comp Ratio @ 80CC

14.6 dome :1

Dome Volume

6cc solid D / -6cc cut to FT

Rod

6.535

Stroke

4.375

Piston Quantity

Wrist Pin Style

Floating

Make

Chevrolet

Piston Material

2618

Prop 65

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Bore Diameter

4.600

Compression Height

1.065

Industry

Automotive

Product Market

Domestic

Engine Type

ICE

Engine

Big Block

Wrist Pin Material

52100

Product Series

Professional

Product Type

Engine Piston

Wrist Pin Outer Diameter

0.990

Forging Type

Strutted

Out of Stock Message

Estimated Shipped Date 3-4 Weeks

EBAY Category ID

33623

Engine - Web

Big Block

Make - Web

Chevrolet

Ring Set Included

Skirt Coating

Yes

Wrist Pin Included

Yes

Title

Wiseco - Chevrolet, Big Block, 4.600 in. Bore, Piston

Piston Volume

6.00

Title - Web

Professional Chevy Big Block Piston - 4.600 in. Bore - 1.065 .in CH, 6.00 CC

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