This Eagle rotating assembly for Chevy LT1350 pairs a 3.480" crank with 5.700" I‑beam rods and -21cc 4.000" flat‑top pistons to create a matched rotating package. The description indicates it is intended for LT‑series Chevy builds that require these specific crank and rod dimensions and piston displacement, offering a coherent rotating foundation for engine assembly.

Eagle Chevy LT1350 1Pc 3.480in Crank 5.700in I-Beam Rods -21cc 4.000in Pistons Rotating Assembly