Wiseco SBC 350 Small Block Pro Tru 9.4:1 Compression Ratio 4.03in Bore Shelf Stock Kit

SKU: PTS503A3

Wiseco Pro Tru Street SBC 350 Piston Kit Small Block Chevy Enthusiasts

Elevate your Small Block Chevy 350 engine to championship levels with the Wiseco Pro Tru Street Piston Kit (SKU: PTS503A3), the ultimate choice for performance, durability, and precision. Engineered for racers and street enthusiasts alike, this shelf stock kit delivers a commanding 9.4:1 compression ratio with a 4.030-inch bore, making it the top-performing option for your high-performance build. Wiseco’s 80+ years of racing heritage and cutting-edge manufacturing in Mentor, Ohio, ensure these forged pistons outshine all competitors, offering unrivaled strength, reliability, and value.

Why Wiseco?

Performance: Forged from 4032 alloy aluminum, these pistons are designed for high-RPM applications, delivering exceptional strength-to-weight ratio and thermal stability for street and track dominance.

Engineering: Wiseco’s Pro Tru Street series features ArmorGlide® skirt coating for reduced friction, quieter operation, and enhanced seizure resistance, ensuring longevity and peak performance under extreme conditions.

Value: Complete with everything needed for a seamless rebuild, this kit offers unmatched quality at a budget-friendly price, making it the smartest choice for enthusiasts and professional builders.

Trusted by Racers: Wiseco’s legacy in motorsports guarantees pistons that exceed expectations, providing the confidence to push your SBC 350 to its limits.

Included:

This all-inclusive piston kit ensures a hassle-free installation, containing:

• 8 Forged 4032 Alloy Aluminum Pistons: 4.030-inch bore, 1.560-inch compression height, -5cc flat-top valve reliefs for 9.4:1 compression ratio (with 64cc heads).
• Piston Rings: Premium S100S8-4030-5 ring set (1/16 x 1/16 x 3/16-inch grooves) for optimal sealing and oil control.
• Piston Pins: High-strength 0.927-inch diameter chromium alloy steel pins for durability.
• Spirolox Clips: Secure pin retention for reliable operation.
• Part Number: PTS503A3 (Replacement single piston: 5503A3).

Vehicle Fitment Data

The Wiseco PTS503A3 Piston Kit is designed for Small Block Chevy 350 engines (5.7L V8) and is compatible with the following:

• Years: 1967–1996
• Makes: Chevrolet, Holden
• Models:
• Chevrolet Camaro (1967–1996)
• Chevrolet Corvette (1967–1996)
• Chevrolet Chevelle (1967–1973)
• Chevrolet Nova (1967–1979)
• Chevrolet Impala (1967–1985)
• Chevrolet El Camino (1967–1987)
• Chevrolet Monte Carlo (1970–1988)
• Chevrolet Suburban 1500 (1998–2001, 5.7L)
• Holden HG, HT, HQ (1969–1974, 5.7L)
• Other Chevrolet/Holden models with 283, 305, 307, 327, 350, or 383 Small Block Chevy engines (verify fitment).
• Engine Specifications:
• Stroke: 3.480 inches
• Rod Length: 5.700 inches
• Cubic Inch Displacement: 355ci (nominal)
• Compression Ratio: 9.8:1 (64cc heads), 9.5:1 (67cc heads)
• Compatible with press-fit or floating rods.

Specifications:

• Bore: 4.030 inches
• Compression Height: 1.560 inches
• Dome Volume: -5cc (flat-top with valve reliefs)
• Pin Diameter: 0.927 inches
• Piston Material: Forged 4032 alloy aluminum
• Coating: ArmorGlide® skirt coating for reduced wear and friction
• Compression Ratio: 9.4:1 (with 64cc heads, verify for other head sizes)

Applications: Ideal for street performance, drag racing, and mild track use.