CHEVY 400 MAIN 2PC REAR SEAL STREET PERFORMANCE SERIES 9000 ROTATING ASSEMBLY BALANCED

The SCAT Chevy 400 - 407 Cast Rotating Assembly (MPN: 1-90900BI) is designed for Chevy 400 cubic inch engines, upgrading them to 407 cubic inches. This assembly includes a Series 9000 Cast Crankshaft, Pro Stock I-Beam Connecting Rods made from Forged 4340 steel with 3/8" cap screws and bushed pins, and Hypereutectic or Forged Flat Top Pistons with two valve reliefs. It also comes with piston rings, rod and main bearings, and is internally balanced. Features a 4.155" bore, 3.750" crank stroke, and 6.000" rod length, compatible with a 2-piece rear seal. May contain Proposition 65 chemicals.