The Howards Cams 45445006535 Billet Reaper Crankshaft is engineered for high-horsepower Chevy Big Block Mark IV engines requiring maximum strength, durability, and precision. Manufactured from premium E4340 billet steel, this crankshaft is CNC-machined for exacting tolerances and designed to withstand extreme cylinder pressures in serious street, strip, and competition engine builds.

Howards Cams 45445006535 Features:

• Billet Reaper crankshaft manufactured from E4340 aircraft-quality billet steel
• CNC-machined for precise journal sizing and consistent balance
• 454 main journal configuration for Chevy Big Block Mark IV engines
• 4.500 in. stroke for high-displacement performance builds
• 2.200 in. rod journal diameter
• Designed for use with 6.535 in. connecting rods
• 2-piece rear main seal design
• Center counterweight and full counterweight configuration for improved balance
• Deep-nitride hardened journals for superior wear resistance
• Fully stress-relieved and shot-peened for long-term durability
• Large fillet radii on all bearing journals for increased strength
• Lightening holes in all rod throws to reduce rotating mass

Howards Cams 45445006535 Notes:

• Designed for Chevy Big Block Mark IV engines from 396–502 ci
• Internally balanced crankshaft
• Professional engine balancing recommended prior to installation
• Intended for high-performance and competition engine applications