Supporting Mods for a 700 Hp Wrangler Hemi Build: Driveshafts, Axles, and More

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The Jeep Wrangler has long been a favorite among off-road enthusiasts and performance junkies alike. When it comes to building a high-powered Wrangler, particularly one with a HEMI engine capable of producing 700 horsepower, supporting modifications become essential. These modifications ensure that the vehicle can handle the increased power and torque, providing both performance and reliability. In this article, we will explore the critical supporting mods for a 700 HP Wrangler HEMI build, focusing on driveshafts, axles, and other necessary components.

Understanding the Importance of Supporting Mods

Supporting mods are essential for any significant power upgrade. They help maintain the vehicle’s overall integrity and performance. When a Wrangler is modified to produce 700 HP, components like driveshafts and axles must be upgraded to withstand the increased stress and torque. Failure to address these areas can lead to catastrophic failures and unsafe driving conditions.

Driveshaft Upgrades

The driveshaft is a crucial component in transferring power from the transmission to the axles. With a HEMI engine producing 700 HP, the stock driveshaft may not be able to handle the added stress. Upgrading to a heavy-duty driveshaft is necessary to ensure reliability and performance.

  • Material: Consider driveshafts made from high-strength materials such as aluminum or carbon fiber for lightweight and durability.
  • Diameter: A larger diameter driveshaft can increase strength and reduce the chances of failure.
  • Double Cardan Joints: These joints provide better articulation and strength, especially for lifted vehicles.
  • Balanced Driveshaft: Ensure that the driveshaft is professionally balanced to reduce vibrations and improve performance.

Axle Upgrades

With the increase in horsepower, upgrading the axles is critical. Stock axles may not withstand the torque produced by a 700 HP HEMI engine. Upgrading to heavy-duty axles will provide the necessary strength and reliability for both on-road and off-road performance.

  • Axle Housing: Look for stronger axle housings that can handle higher torque loads.
  • Gear Ratio: Consider changing the gear ratio to optimize performance and torque delivery.
  • Aftermarket Differentials: Upgrading to lockers or limited-slip differentials can improve traction and control.
  • Axle Shafts: Upgrade to high-strength axle shafts made from tougher materials to prevent breakage.

Transmission Modifications

Along with driveshaft and axle upgrades, modifications to the transmission are necessary to handle the increased power. A stock transmission may struggle with the demands of a 700 HP engine, leading to premature failure.

  • High-Performance Transmission: Consider upgrading to a heavy-duty transmission designed for high horsepower applications.
  • Torque Converter: A high-stall torque converter can improve acceleration and responsiveness.
  • Transmission Cooler: Adding a performance transmission cooler can help maintain optimal operating temperatures.
  • Reinforced Components: Upgrading internal components such as clutches and bands can improve reliability.

Suspension Upgrades

To handle the power and improve handling, suspension upgrades are essential. A well-designed suspension system will enhance stability and control, especially when off-roading.

  • Shocks and Struts: Upgrade to high-performance shocks and struts for better damping and control.
  • Control Arms: Consider adjustable control arms to improve alignment and handling characteristics.
  • Coil Springs: Heavy-duty coil springs can support the weight and provide better ride quality.
  • Anti-Roll Bars: Upgrading anti-roll bars can reduce body roll during aggressive maneuvers.

Braking System Enhancements

With increased power comes the need for improved stopping power. Upgrading the braking system is vital to ensure safety and performance.

  • Big Brake Kits: Consider installing big brake kits with larger rotors and calipers for better stopping power.
  • Performance Brake Pads: Upgrade to high-friction brake pads for improved braking performance.
  • Stainless Steel Brake Lines: These lines provide better pedal feel and are more resistant to expansion under pressure.
  • Brake Booster Upgrade: A high-performance brake booster can improve brake response and feel.

Final Thoughts

Building a 700 HP Wrangler HEMI is an exciting venture that requires careful consideration of supporting mods. Upgrading driveshafts, axles, transmission, suspension, and braking systems will ensure that your vehicle can handle the increased power while maintaining safety and reliability. By investing in these essential components, you can enjoy the thrill of driving a high-performance Wrangler without compromising on performance or safety.