Forged Dome-Top Piston Kit, 4.060-Inch Bore

The SRP 140350 piston kit is an advanced, lightweight solution engineered for Small Block Chevy engines requiring a 4.060-inch bore and 3.750-inch stroke. Built from high-silicon 2618 aluminum alloy, these FSR-forged pistons offer superior strength while being significantly lighter than traditional designs to support reliable performance in both street and strip environments. The domes are CNC-machined with radiused valve reliefs to promote optimum flame travel. Technical specifications include a 1.125-inch compression height and a 7.00cc dome volume. These pistons are designed specifically for use with 23-degree cylinder heads. The kit arrives with pin fitting, double spiro locks, oil rail supports, and 0.927-inch diameter wrist pins (130 grams each). Please note that the CNC-machined ring grooves are sized for 1/16, 1/16, and 3/16-inch ring packages, which are sold separately. Compression ratios vary based on cylinder head chamber volume, achieving 14.2:1 with 58cc heads, 13.0:1 with 64cc heads, and 12.0:1 with 70cc heads.