Industrial Injection 5.9L 12 Valve Cummins Stage 2 Long Block Engine (1989-1998)
The Industrial Injection Stage 2 Long Block Engine is built for 1989-1998 Dodge Ram 5.9L Cummins owners looking to push performance to the next level while maintaining the durability required for competitive diesel applications. Featuring premium forged components, advanced machining processes, and race-proven engineering, this engine is designed to deliver exceptional horsepower, reliability, and longevity under extreme operating conditions.
Every Stage 2 Long Block starts with a balanced and blueprinted rotating assembly that is Sim-tested to ensure maximum precision and reliability. The bottom end is strengthened with Wagler HD Forged Connecting Rods, Industrial Injection X Series Fly Cut, Coated & Chamfered Pistons, a 14mm Gorilla Girdle with ARP Main Studs, and a balanced Cummins crankshaft to provide the strength required for high-horsepower builds.
The valvetrain is upgraded with an Industrial Injection Stage 2 210/220 Camshaft and cam bearings installed in every journal to help prevent camshaft and block wear. Coated H-Series bearings, billet freeze plugs, new tappets, and a complete oiling and cooling system refresh ensure long-term durability and performance.
Topping off the build is a fully CNC Ported & Polished Stage 2 Cylinder Head with Fire Ring Grooves. Featuring a machined intake shelf for a performance intake runner, premium stainless steel nitride-coated valves, oversized valve seats, hardened alloy valve guides, drilled and tapped coolant freeze plugs, and USA-made 150lb valve springs, this cylinder head is engineered to maximize airflow and head gasket sealing under high boost and cylinder pressure.
To complete the package, ARP 625 Head Studs provide exceptional clamping force for high-performance and competition applications.
Features:
- Balanced and blueprinted rotating assembly
- Sim-tested engine assembly
- Wagler HD Forged Connecting Rods
- Industrial Injection X Series Fly Cut, Coated & Chamfered Big Bowl Pistons
- 14mm Gorilla Girdle with ARP Main Studs
- Balanced Cummins crankshaft
- Industrial Injection Stage 2 210/220 Camshaft
- Cam bearings installed in all journals
- Coated H-Series main and rod bearings
- Billet freeze plugs
- New tappets
- New oil pump, water pump, and oil cooler
- Oil pickup tube
- Big Iron stamped oil pan
- Stage 2 CNC Ported & Polished Cylinder Head with Fire Ring Grooves
- Intake shelf machined off to accept performance intake runner
- Fully CNC ported intake and exhaust ports with performance hand blending
- Radius-cut fire ring grooves for improved head gasket sealing
- Custom performance stainless steel nitride-coated valves
- Top hat valve seals
- Diamond honed hardened alloy valve guides
- Drilled and tapped steel coolant freeze plugs
- Upgraded 150lb valve springs
-
7mm injector bores
- ARP 625 Head Studs
Benefits:
- Built for high-horsepower street, race, and competition applications
- Increased bottom-end strength with forged rotating components
- Improved airflow and engine efficiency
- Enhanced combustion sealing with fire ring grooves
- Superior head clamping force with ARP 625 Head Studs
- Reduced wear through cam-bearing-supported camshaft design
- Precision-balanced for smooth operation and reliability
- Designed to withstand extreme cylinder pressure and boost levels
Applications:
- 1989-1998 Dodge Ram 2500/3500 5.9L 12 Valve Cummins Engines
Important Notes:
- Valve cover not included
- Rocker arms and pushrods not included
- Additional assembly gaskets not included
- Performance intake side runner not included
- Recommended break-in oil: Driven Racing Oil / Joe Gibbs Break-In Oil for the first 300-500 miles (sold separately)
Why Choose Industrial Injection?
Built in our state-of-the-art engine facility using premium components and precision machining technology, the Stage 2 Long Block Engine delivers the strength, airflow, and durability needed for customers who demand serious performance from their 5.9L Cummins engine.