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Wiseco 6490B6 Quick 8 Series 2618 Alloy Forged Piston - Individual Replacement

(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

Picture for manufacturer Wiseco Pistons

Part Number

6490B6
11 reviews
Sale Price

$172.99

Estimated ship date Saturday, November 28

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Product Details

The Wiseco 6490B6 is a Professional Series Quick 8 forged piston built from high-strength 2618 alloy for serious competition applications. Featuring a 12–14 degree solid dome with a 0.200-inch thick deck, this piston is designed to be machined to your specific head configuration — cut extreme valve pockets for severely angle-cut heads, or mill the dome flat for a custom flat-top profile. It fits a 9.750-inch deck height and is fully nitrous compatible.

This is an individual replacement piston (sold as a single unit). Wrist pins S462 are included. The recommended ring set is W77008-4560-5, sold separately.

Key Features:

  • 2618 alloy forging — aerospace-grade aluminum alloy delivers superior strength and fatigue resistance under extreme heat and cylinder pressure
  • Strutted skirt design — lightweight yet resistant to the cracking common with slab or full-round forgings
  • Gas ported — vertical gas ports channel combustion pressure behind the top ring for improved ring seal and reduced blow-by
  • 12–14 degree solid dome with 0.200-inch thick crown — allows aggressive custom machining to suit specific head and cam combinations
  • Nitrous compatible — engineered to withstand the extreme cylinder pressures of nitrous oxide applications
  • Precision-machined ring grooves — calculated groove root diameters and axial widths ensure maximum ring seal and minimal oil consumption
  • Optimized valve pocket geometry — allows oversized valves and high-lift camshafts without clearance issues
  • ISO-certified forging facility — complex forged shapes with advanced materials and feature-aligned grain flow technology

ArmorGlide Skirt Coating: Wiseco's proprietary ArmorGlide anti-friction skirt coating is developed and validated through in-house dyno testing. It reduces friction, allows tighter piston-to-wall fitment than uncoated pistons, improves ring seal, and minimizes piston rock noise — all while enhancing wear resistance for extended engine life.

Specifications:

  • Material: 2618 Alloy Forged
  • Series: Quick 8 (Professional Series)
  • Dome Style: 12–14 Degree Solid Dome
  • Deck Height: 9.750 inches
  • Gas Ported: Yes
  • Nitrous Compatible: Yes
  • Skirt Type: Strutted
  • Included Wrist Pin: S462
  • Recommended Ring Set (sold separately): W77008-4560-5
  • Quantity: Individual/Replacement Piston (single)

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

Comp Height

1.215

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

6.385

Stroke

4.375

Piston Quantity

1

Wrist Pin Style

Floating

Make

Chevrolet

Piston Material

2618

Prop 65

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

Bore Diameter

4.560

Compression Height

1.215

Industry

Automotive

Product Market

Domestic

Engine Type

ICE

Engine

Big Block

Title

Wiseco - Chevrolet, Big Block, 4.560 in. Bore, Piston

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

No

Skirt Coating

Yes

Wrist Pin Included

Yes

Piston Volume

6.00

Title - Web

Professional Chevy Big Block Piston - 4.560 in. Bore - 1.215 .in CH, 6.00 CC

Super fast shipping and the best prices anywhere!

Fast and easy

Great price

Very easy to use and nice that you can pay with PayPal. Also the discount coupons and low price are great!

Great

Great prices

So far so good.

Quick, Easy, and Most Economical Found Online!

Price was right!

ASAP tracking

Excellent service with the actual stock on hand, shipment was made the next day and a tracking number was provided. I have tried 2 other online supply stores which don't know what they have in stock.

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