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Wiseco 6398RXS Professional Series Forged Piston Chevy LS 4.000 in. Bore -3.2cc Flat Top

(1998-2002 Chevrolet Camaro SS/Z28; 1997-2004 Chevrolet Corvette Base; 2004 Pontiac GTO; 1998-2002 Pontiac Firebird Formula)

Manufacturer

Picture for manufacturer Wiseco Pistons

Part Number

6398RXS
7 reviews
Sale Price

$145.99

Estimated ship date Sunday, November 22

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Product Details

The Wiseco 6398RXS is a Professional Series shelf-stock forged piston engineered for Chevrolet LS-based platforms. Featuring a -3.2cc flat top crown and a 4.000-inch bore, this piston is purpose-built for high-boost, nitrous, and high-performance street and race applications. Sold individually, it is designed to be paired with precision ring packages and is immediately available as a shelf-stock part.

Key Specifications:

  • Bore Diameter: 4.000 in.
  • Compression Height: 1.3045 in.
  • Pin Diameter: 0.927 in.
  • Crown Volume: -3.2cc Flat Top
  • Rod Length: 6.125 in.
  • Stroke: 3.622 in.

Key Features:

  • Engineered, forged, and machined in the USA from 2618 aluminum for superior tensile strength and fatigue resistance
  • ArmorGlide® skirt coating for seizure resistance, friction reduction, and quieter operation
  • Fully machined crown with precision ring grooves and anti-detonation groove
  • Additional ring seal-improving features for enhanced combustion efficiency
  • Forced pin oiling for reliable lubrication under high-stress conditions
  • Dedicated forgings with specially designed valve pockets and optimized skirt profiles
  • Designed and built to withstand heavy to severe duty performance applications

Wiseco's Professional Series LS pistons deliver custom-level performance in a readily available shelf-stock format — ideal for serious engine builders who demand race-proven quality without custom lead times.

Products specifications

Fits

1998-2002 Chevrolet Camaro SS/Z28; 1997-2004 Chevrolet Corvette Base; 2004 Pontiac GTO; 1998-2002 Pontiac Firebird Formula

Comp Ratio @ 65CC

10.6:1

Comp Ratio @ 67CC

10.4:1

Comp Ratio @ 68CC

10.2:1

Comp Ratio @ 70CC

10:1

Dome Volume

-3.2

Gram Weight

465

Rod

6.098 / 6.125

Stroke

3.622

They had the lowest price by far! Quick shipment! I am going back for more. Thanks!<br><br>Order 6489

Great pricing!! cheapest products on the web!

User-friendly site

I really like how prompt the order went through and the quality of the part im getting

Great place to shop online. The best price on the internet and super fast delivery. Shop with Autoplicity, highly recommended.

Autoplicity had the best price for my Thule 867 roof rack cargo bag. It was easy to pay thru my Amazon accont and the order shipped within 24 hours of my placing the order.

I only gave them a 3 star raring on their shipping because I went on their site on Tuesday and the order said it had not been shipped. On Wednesday I received my shipment. The left hand needs to figure out what the right hand is doing. Other than that, GREAT

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