The Eagle Pro Street rotating assembly for Chevy 400 pairs a 3.750" forged 4140 crank with 5.700" 4340 I‑beam rods and 7/16" ARP 8740 bolts to form a race‑oriented bottom end for naturally aspirated setups. It includes forged 4032 MAHLE 5cc flat‑top 4.125" pistons, plasma‑moly file‑fit rings and King XP rod/main bearings to complete the assembly for track service.
Eagle Chevy 400 350 Mains 3.750in Crank 5.700in I-Beam Rods 4.125in Pistons Rotating Assembly