Any concerns with the short piston skirts of the LS1 pistons? Some LS1 engines had piston slap during warm up and oil consumption, due to excessive piston ring movement in the piston grooves caused by the piston rocking in the cylinder. The pistons were made of hypereutectic aluminum alloy. Very tight piston to cylinder wall clearances are required with the LS1 piston to prevent issues, tighter than for standard eutectic pistons. Why run a piston on the edge of the design requirements unless necessary? Any one make LS1 pistons with a slightly longer skirt?
