Hamilton Cams 07-S-003 103 lb Valve Springs for 1998.5-2018 Dodge Cummins 5.9L/6.7L 24V

Hamilton Cams 07-S-003 103 lb Valve Springs

The Hamilton Cams 07-S-003 103 lb Valve Springs are engineered to enhance the valvetrain performance of 1998.5-2018 Dodge Cummins 5.9L and 6.7L 24-valve engines. These springs provide increased seat pressure to prevent valve float and reversion, ensuring optimal engine efficiency under high boost and elevated RPM conditions.

Detailed Product Description

Enhanced Seat Pressure

Stock 24-valve springs typically offer 78-82 lbs of seat pressure at an installed height of 1.380 inches. The Hamilton Cams 07-S-003 springs increase this to 103 lbs, effectively controlling the valvetrain at boost pressures over 35 psi and engine speeds exceeding 3,800 RPM.

Prevention of Valve Float and Reversion

By providing higher seat pressure, these springs prevent valve float, which can cause significant valvetrain damage. They also mitigate reversion—the unwanted entry of exhaust gases into the cylinder during the intake stroke—thereby maintaining combustion efficiency and power output.

Optimized Nose Pressure

The springs are designed with a nose pressure of 180 lbs, balancing effective valve control with camshaft longevity. This optimization reduces the risk of camshaft wear associated with excessively high spring pressures.

Compatibility and Installation

These valve springs are compatible with 1998.5-2018 Dodge Cummins 5.9L and 6.7L 24-valve engines. They are suitable for applications involving high boost pressures, elevated RPMs, or aftermarket camshafts. For engines operating above 4,500 RPM, Hamilton Cams recommends their 110 lb springs for optimal performance.