GM LS Series Piston Set 4.070 Bore -3.2cc

The Wiseco GM LS Series Piston Set 4.070 Bore -3.2cc is a forged piston solution engineered for serious LS engine builders who demand reliability under high-RPM and boost conditions. Whether you're building a street machine, weekend track car, or forced-induction powerhouse, this piston set delivers the strength and precision needed for competitive performance.

Wiseco pistons have earned their reputation among engine builders and performance shops for holding up in applications where stock cast aluminum simply cannot survive. These forged pistons are constructed from premium aluminum alloy, designed to withstand extreme pressures and temperatures without permanent deformation or fatigue failure. The 4.070" bore specification ensures a precise fit within LS platform blocks, while the -3.2cc dome geometry creates the specific compression ratio required for your engine's induction method—critical for turbo, supercharger, or naturally aspirated tuning.

This piston set is ideal for LS1, LS3, LS9, and other Gen III/IV small-block variants in 4.070" bore applications, making it compatible with .030" overbore LS blocks. Installation requires proper ring end-gap and clearance verification during assembly; Wiseco provides detailed specifications to ensure long-term durability. Pair these with quality components for optimal performance in high-demand automotive applications.