Power Driven 4BT Race Conical Valve Spring Set

Set of 8 high-performance drop-in valve springs for the 8v 4BT Cummins cylinder head. These ultra-lightweight valve spring assemblies are designed for maximum valve control at high rpm. They feature 175 lbs of seat pressure and room for just over 0.700″ of valve lift. These performance springs will accommodate the majority of the largest lift camshafts on the market while maintaining reasonable open pressure for cam lobe and lifter/tappet life.

As with any aftermarket valve spring upgrade with over stock pressure, it’s recommended that a higher-quality engine oil is used to protect the cam and tappets.

Kit contains:

• 8 conical valve springs
• 8 steel retainers
• 16 lock halves (enough for 8 valves)