Eagle Pontiac 455 4.250in Crank 6.800in I-Beam Rods -22cc 4.185in Pistons Rotating Assembly

If you're building a Pontiac 455 for naturally-aspirated racing, this Eagle Pro Street rotating assembly is a solid choice. It bundles together the core components you need to get your engine's bottom end ready for serious work. This assembly is designed to handle the demands of performance applications where every pound-foot of torque matters.

At the heart of this kit is a 4.250-inch forged 4340 crankshaft, chosen for its strength and durability under high stress. Paired with it are 6.800-inch I-beam connecting rods, also made from robust 4340 steel. These rods are secured with 7/16-inch ARP 8740 bolts, a well-known name for reliable fasteners in performance engines. The pistons are forged 4032 aluminum from Mahle, featuring an inverted dome design with a -22cc volume and a 4.185-inch bore size. This specific piston design helps achieve your desired compression ratio for optimal power output in a naturally-aspirated setup. The assembly also includes plasma-moly file-fit piston rings, allowing for precise ring gap adjustment, and King XP rod and main bearings to ensure smooth rotation and proper oil clearance.

This rotating assembly is intended for racing use and is not CARB approved, meaning it cannot be shipped to California. It's important to note that this is a component kit; you'll need to ensure all other engine components are compatible and properly installed according to manufacturer specifications for optimal performance and longevity.