MSD 85840 Ford 351W Steel Gear Pro-Billet Distributor for Hydraulic Roller Cams

The MSD 85840 is a Pro-Billet distributor engineered specifically for Ford 351W small block engines equipped with hydraulic roller camshafts. The housing is CNC-machined from 6061-T6 billet aluminum to exact tolerances, delivering a precision fit and a clean, professional appearance. This unit requires use with an MSD 6, 7, or 8-series ignition control box.

Key Features:

• Steel gear specifically designed for hydraulic roller cam applications
• CNC-machined billet aluminum housing for precise tolerances and long-term durability
• Maintenance-free magnetic pickup provides race-proven, reliable triggering without ongoing adjustments
• Mechanical advance assembly fine blanked from chro-moly steel, TIG-welded for strength, and QPQ coated for reduced friction
• Precision advance weights glide on nylon bushings for smooth advancement; multiple springs and stop bushings included for custom advance curve tuning
• QPQ-coated steel shaft guided by a sealed ball bearing and long sintered bushing for stable timing signals and consistent spark delivery at any RPM
• HEI-style cap and rotor included with brass terminals for reliable high-energy spark transfer
• Same height and width profile as MSD PN 8584 for easy swap installations
• Standard distributor gear rotation
• Legal for sale and use on uncontrolled (non-emissions controlled) vehicles and racing use

Sold individually. Includes distributor cap and race rotor. Compatible with MSD 6, 7, 8, and 10-series ignition systems.