Here’s Wiseco’s new 2618-alloy forged LS piston. The 2618 alloy is stronger than 4032, but typically wears quicker. To remedy this, Wiseco uses a permanent skirt coating that lasts the life of the piston. Forged pistons have a reputation for being noisy, so Wiseco offsets the pins like the O.E. to reduce this noise on startup. A low-friction ring package is designed to maximize ring land thickness and utilizes a special oil ring design to reduce oil consumption. Because the pistons swing very close to the reluctor ring on LS engines, Wiseco was the first to design a forging around a 2.250-inch wristpin length. To make this possible, it was designed with just enough pin boss spacing to fit the factory connecting rod width. This further increases pin bore bearing area and had the added benefit of reducing pin flex. This piston uses the Wiseco Flow-dome technology to hit the needed compression ratio target: In our case, 11.1:1 by keeping the piston at only -3cc, even with the valve reliefs.