Oil Pump Drive Shaft .400in Raised Cam

The Oil Pump Drive Shaft .400in Raised Cam from MOROSO is engineered for serious big-block Chevy builders who demand precision in their engine's lubrication system. This 9.136-inch steel shaft is purpose-built for raised-cam applications on Dart blocks, where stock oil pump drive solutions fall short of modern performance requirements. Whether you're assembling a street engine, track car, or high-RPM competition build, this component ensures reliable oil delivery when camshaft geometry demands non-standard drive positioning.

Constructed from hardened steel and finished to OEM tolerances, the Oil Pump Drive Shaft .400in Raised Cam features a hex-drive design that positively engages the oil pump's driven gear without slip or misalignment. The 0.400-inch raised cam offset compensates for camshaft lift variations inherent in aggressive cam profiles and aftermarket cylinder head combinations, maintaining proper pump timing and flow rate across the entire RPM band. MOROSO's manufacturing standards ensure dimensional accuracy and durability under sustained high-RPM operation, critical factors that prevent premature wear on pump internals and maintain consistent oil pressure throughout your engine.

This drive shaft is ideal for builders upgrading to raised-cam Dart blocks or retrofitting existing big-block Chevy platforms with performance-oriented camshaft packages. Installation is straightforward for experienced engine builders; it drops into place during final assembly or mid-build modifications without requiring extensive disassembly. Verify your specific camshaft lift and block bore dimensions before ordering to ensure proper engagement. At 0.52 lbs, it's a lightweight precision component that contributes zero parasitic loss while guaranteeing oil system reliability from idle to peak boost.