1400lb ft TQ || THE FAST 5.9 CUMMINS BUILD || HOW TO MAKE AN ALL PURPOSE TRUCK

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Achieving 900 horsepower (HP) from a Cummins engine involves several modifications and upgrades, as standard Cummins engines are not designed to produce this level of power. Here’s a general guide to help you understand the process:

1. *Engine Selection:*
- *Base Engine:* Start with a strong base engine like the Cummins 6.7L or 5.9L, which are common choices for performance builds. The 6.7L is newer and has better technology, but the 5.9L is also popular in performance circles.

2. *Turbocharging:*
- *Upgrade Turbocharger:* Install a high-performance turbocharger or a compound turbo setup. Compound setups use two or more turbos to increase boost and power.
- *Intercooler:* Upgrade to a larger, high-efficiency intercooler to handle the increased air volume and temperature.

3. *Fuel System:*
- *High-Performance Injectors:* Use larger or higher-flow fuel injectors to provide the extra fuel needed for increased power.
- *Lift Pump:* Install a high-performance lift pump to ensure adequate fuel supply and pressure.

4. *Engine Internals:*
- *Forged Internals:* Upgrade to forged pistons, rods, and crankshaft to handle the increased stress and power.
- *Balancing:* Ensure the engine is properly balanced to handle the high power output reliably.

5. *ECU and Tuning:*
- *Custom Tuning:* Have the engine ECU custom-tuned to handle the increased power and fuel. This is critical for ensuring the engine runs efficiently and safely.
- *Performance Chip:* Install a performance chip or ECU remap to increase horsepower and torque.

6. *Exhaust System:*
- *High-Performance Exhaust:* Upgrade to a high-flow exhaust system to reduce backpressure and improve exhaust flow.

7. *Cooling:*
- *Enhanced Cooling:* Upgrade the engine’s cooling system with a high-performance radiator and oil cooler to keep temperatures in check.

8. *Transmission and Drivetrain:*
- *Strengthened Transmission:* Ensure the transmission can handle the increased power. You may need to upgrade to a stronger unit or reinforce the existing one.
- *Drivetrain Upgrades:* Reinforce or upgrade the drivetrain components (e.g., differential, driveshaft) to handle the increased torque.

9. *Supporting Mods:*
- *Air Intake:* Use a high-performance air intake system to ensure optimal air flow into the engine.
- *Suspension and Brakes:* Upgrade suspension and braking systems to handle the increased performance and ensure safe handling.

10. *Professional Help:*
- *Consult Experts:* Work with performance specialists who have experience with Cummins engines. They can help with proper installation, tuning, and ensuring everything is set up correctly.

Achieving 900 HP is a major modification that involves significant investment and expertise. Make sure to account for the durability and reliability of all components, as pushing an engine to this level of performance can impact its lifespan.