Wiseco PTS513A3 Ford Windsor Pro Tru Street Forged Piston Set 4.030 Bore -10cc

The Wiseco PTS513A3 is a complete Pro Tru Street forged piston set engineered for Ford Small Block Windsor 289/302 engines bored 0.030" over to 4.030", displacing 306 cubic inches. Built with the performance demands of street and mild racing builds in mind, these pistons deliver the strength and durability of a true forging at an accessible price point.

Construction & Materials:

• Forged from 4032 alloy aluminum for superior strength and tighter piston-to-wall clearances compared to standard cast pistons
• Manufactured in Mentor, Ohio using Wiseco's near-net forging technique to minimize machining operations and reduce cost
• Reverse dome (dish) crown design with -10cc volume for precise compression ratio tuning
• All machining performed on CNC equipment for tight tolerances throughout

Key Features:

• ArmorGlide skirt coating — Wiseco's proprietary friction-reducing bonding technology that reduces wear, increases horsepower, and minimizes noise, especially at bottom-dead-center reversal
• Oversized, symmetrical, radiused valve pockets for maximum flow during valve overlap, compatible with oversized valves and high-lift camshafts
• Tight 0.003" piston-to-wall clearance enabled by 4032 alloy for quieter cold-start operation
• Chromium alloy steel wrist pins and Spirolox retaining clips included

Complete Kit Includes:

• Ring set (P/N: S100S8-4030-5)
• Wrist pins and clips

Specifications:

• Kit Part Number: PTS513A3
• Bore: 4.030 in.
• Compression Height: 1.600 in.
• Pin Diameter: 0.912 in.
• Stroke: 3.000 in.
• Rod Length: 5.090 in.
• Dome Volume: -10cc (Reverse Dome)
• Displacement: 306 cu. in.
• Compression Ratio @ 60cc Head: 9.0:1
• Compression Ratio @ 70cc Head: 8.0:1

The Wiseco Pro Tru Street series bridges the gap between performance and affordability, making forged piston technology accessible for street-driven Windsor Ford builds. Whether you're rebuilding a stock-stroke 302 or assembling a mild stroker, the PTS513A3 delivers reliable, long-lasting performance.