Wiseco-Pro Tru PTS506A3 Forged Flat-Top Piston and Ring Kit for Small Block Chevy, 4.030-Inch Bore

The Wiseco-Pro Tru PTS506A3 piston and ring kit is designed for Small Block Chevy engines using a 23-degree cylinder head configuration. This forged flat-top piston set provides a durable, performance-focused foundation for street, strip, and competition engine builds where dependable strength and consistent fitment are essential. The flat-top design features a nominal minus 5.00 cc volume to help support precise compression-ratio calculations during engine assembly.
The PTS506A3 kit is engineered for a 4.030-inch bore and uses a 1.125-inch compression height. Its 1/16-inch, 1/16-inch, 3/16-inch ring groove configuration accommodates compatible piston ring packages and supports effective oil control and combustion sealing when matched with the correct rings and cylinder finish. Forged construction offers improved resistance to demanding operating conditions compared with standard cast piston designs.
Each Wiseco-Pro Tru PTS506A3 set is intended for builders replacing or upgrading pistons in a compatible Small Block Chevy application. Verify bore size, compression height, connecting rod dimensions, cylinder head angle, piston-to-valve clearance, ring specifications, and final compression ratio before installation. Professional machining and assembly practices are recommended to ensure proper clearances and reliable engine performance.

Features:

• Brand: Wiseco-Pro Tru

• Part Number: PTS506A3

• Application: Small Block Chevy engines with 23-degree cylinder heads

• Construction: Forged aluminum piston design

• Piston Style: Flat-top configuration

• Bore Size: 4.030 inches

• Compression Height: 1.125 inches

• Ring Grooves: 1/16 inch, 1/16 inch, and 3/16 inch

• Piston Volume: Minus 5.00 cc

• Kit Type: Piston and ring set