Manley 28548HXX BBC Rotating Assembly Stroke Bore - 548 4.250 4.530 20cc

The Manley 28548HXX is a complete Big Block Chevy 548 cubic inch forged rotating assembly built for serious street and race engine builds. Featuring a 4.250-inch stroke and 4.530-inch bore with -20cc dish pistons, this kit delivers a fully matched, precision-engineered bottom end in one package.

Key Features:

• 4340 forged steel crankshaft — lightweight design engineered for internal balance with 454 main journal sizing
• 4340 forged steel H-Beam connecting rods — 6.385-inch length with 7/16" ARP 8740 cap screws standard
• 2618 forged aluminum Platinum Series pistons — -20cc dish design with premium Chrome Moly wrist pins
• Available bore size: 4.530" (+.030")
• Horsepower rated to 900 hp with standard ARP 8740 cap screws; upgradeable to 1,500 hp with optional ARP 2000 cap screws
• Includes Total Seal piston rings and Clevite "H" Series narrowed rod bearings and "P" Series main bearings

The "HXX" suffix denotes H-Beam rods with ARP 2000 upgraded fasteners, making this assembly ready for demanding high-horsepower applications right out of the box. All components are system-matched and designed to work together for a seamless engine build.