Wiseco PTS523A3 Pro Tru Street Forged Piston & Ring Kit for Chevy LS (4.030")

Vehicle Fitment

• Chevrolet LS V8 engines (Gen III / IV)

Features

• Forged 4032-alloy aluminum for high strength and durability
• ArmorGlide® skirt coating reduces friction and improves wear life
• Dome-top design (+4.00 cc) for increased compression
• Two symmetrical valve reliefs for efficient valve clearance
• Includes chromium-alloy wrist pins and Spirolox retainers
• Ring groove configuration: 1/16" top, 1/16" second, 3.0 mm oil ring
• Optimized for street-performance use - Pro Tru Street series
• Complete kit - pistons, rings, pins, and retainers included

Specifications

• Part Number: PTS523A3
• Bore Diameter: 4.030" (~102.36 mm)
• Compression Height: 1.335"
• Crown Volume: +4.00 cc
• Wrist Pin Diameter: 0.945"
• Piston Material: Forged 4032 aluminum
• Ring Sizes: 1/16", 1/16", 3.0 mm
• Estimated Compression Ratio: ~11.2 : 1 (with 65 cc combustion chamber)
• Piston Count: 8 (full V8 set)

Included Components

• 8x Forged pistons
• 8x Chromium-alloy wrist pins
• 8x Spirolox retainers / clips
• 8x Piston ring sets (top, second, oil rings)

Product Description

The **Wiseco PTS523A3** is a Pro Tru Street piston and ring kit designed specifically for Chevrolet LS series V8 engines. Forged from 4032 aluminum and coated with ArmorGlide®, these pistons offer a strong, durable solution for street builds that demand reliable performance.

With a +4 cc dome profile, these pistons help raise the compression ratio, making them well-suited for high-output naturally aspirated or mildly boosted LS engines. The symmetrical valve reliefs support efficient valve operation, even on high-lift camshafts.

This full kit includes eight pistons, wrist pins, Spirolox retainers, and complete ring sets, making it ideal for a rebuild or performance upgrade. Whether you're rebuilding an LS1, LS2, or larger LS block, the PTS523A3 offers excellent value and performance for street-driven V8s.