Oil Pump Driveshaft - Dart SBC w/Raised Cam

The MOROSO Oil Pump Driveshaft for Dart SBC with Raised Cam (MPN 22077) is a precision-engineered component designed for small-block Chevy engine builds running elevated camshaft profiles. This pinned sleeve driveshaft maintains reliable oil pump engagement in applications where stock geometry no longer aligns properly, making it an essential upgrade for modified Dart engines with raised or performance cams.

At 6.438 inches in length with a 0.391-inch raised offset, this steel driveshaft compensates for the altered cam timing geometry typical of high-performance small-block builds. The pinned sleeve design prevents rotational slippage between the shaft and pump drive gear—critical for maintaining consistent oil circulation pressure during sustained throttle application. The compact 0.43-pound weight minimizes rotating mass without sacrificing structural integrity, important in engines where every fraction matters for efficiency and reliability.

This component is purpose-built for builders working with Dart small-block Chevy platforms and elevated camshaft profiles—particularly race engines, street performance builds, and engine swaps where off-the-shelf oil pump driveshafts no longer fit original specifications. Proper oil pump engagement is non-negotiable; without the correct driveshaft geometry, oil starvation can occur within seconds of running the engine. MOROSO's raised-cam offering solves this compatibility problem directly.

The oil pump driveshaft is often overlooked during engine assembly, yet it is among the most critical internal components. A binding or misaligned pump drive can rob horsepower, generate heat, and lead to catastrophic engine failure if oil pressure drops. Selecting the correct driveshaft length and offset for your specific cam profile and block geometry is essential for a successful build. This MOROSO shaft is sold individually and integrates seamlessly into complete Dart SBC packages.