We all agree that there is something inherently satisfying about a rig that stands taller than the rest. You likely already have a modified suspension, but perhaps those new 37-inch tires are rubbing, or you simply want a more aggressive stance. If you find yourself in this position, you are likely searching for the best way to gain that extra clearance without ruining your ride quality.
I promise to guide you through the technical nuances of adding height to an already modified vehicle while prioritizing your safety and your truck’s longevity. This guide will provide a clear preview of the methods, tools, and mechanical adjustments required to achieve your goal correctly. Learning how to lift a lifted truck requires a deeper understanding of geometry than a standard “out of the box” kit installation.
By the end of this article, you will know which components to upgrade, which shortcuts to avoid, and how to keep your drivetrain from vibrating itself to pieces. Let’s dive into the mechanics of taking your off-road machine to the next level.
Understanding the Foundation of Your Current Setup
Before you turn a single wrench, you must identify exactly what is currently providing your lift. Most trucks use either a suspension lift, a body lift, or a simple leveling kit. Adding more height depends entirely on how the first few inches were achieved.
If you have a suspension lift, your control arms, leaf springs, or coil springs have been modified. If you have a body lift, you have spacers between the frame and the cab. Knowing the difference is vital because you cannot always add more of the same type of lift without creating instability.
Check your current CV axle angles and your driveshaft position. If your axles are already at a steep angle, adding more suspension height could cause them to bind or snap. This initial assessment is the most important step in the process.
how to lift a lifted truck Safely and Effectively
When you are looking at how to lift a lifted truck, you generally have three safe paths to choose from. The first is adding a body lift to a suspension-lifted truck. This is often the safest way to gain 1 to 3 inches of tire clearance without affecting your suspension geometry.
The second method involves replacing your current lift components with taller ones. For example, if you have a 4-inch lift, you might swap your 4-inch springs for 6-inch springs. This is more expensive but maintains a cleaner mechanical setup than stacking parts.
The third method is adding a small leveling spacer on top of a full suspension lift. This is common for owners who want to get rid of the “rake” or front-end dip. However, you must ensure your upper control arms have enough travel to handle the additional height.
The Role of Body Lifts in “Double Lifting”
A body lift uses nylon or urethane spacers to create a gap between the frame and the body. This does not increase ground clearance at the pumpkins (differentials), but it does allow for much larger tires. Since it doesn’t change the suspension, your ride quality remains the same.
Keep in mind that body lifts require bumper brackets and steering shaft extensions. If you go higher than three inches with a body lift, you will start to see a large, unsightly gap between the frame and the body. Many owners use gap guards to hide this.
Upgrading to Taller Coil Springs or Leaf Packs
If your goal is more “flex” and actual ground clearance, replacing your current springs is the way to go. High-quality progressive rate springs can provide more height while actually improving the ride over a stiff, cheap lift kit. For the rear, look into full replacement leaf packs rather than lift blocks.
Replacing the springs often requires longer shocks. If your shocks are currently at their maximum extension, they will “top out” over every speed bump. This leads to a harsh ride and can eventually break the shock mounts off your frame.
Critical Components That Need Attention When Going Higher
As you increase height, the distance between your frame and your axles grows. This stretches everything connected to both. One of the most overlooked items is the brake lines. Standard rubber lines can pull tight at full suspension droop, leading to a catastrophic failure.
Always install braided stainless steel brake lines that are long enough for your new height. These offer better pedal feel and the necessary length for off-road articulation. Don’t forget to check your vacuum lines and ABS sensor wires as well.
Next, look at your steering linkage. As the truck goes up, the drag link and track bar angles become steeper. This causes “bump steer,” where the truck darts to one side when you hit a pothole. A dropped pitman arm or a track bar relocation bracket is usually required to keep these bars parallel.
Driveshaft and U-Joint Geometry
Your driveshaft has a limited range of motion. When you lift a truck further, the pinion angle changes. If the angle is too steep, your U-joints will wear out prematurely or cause a heavy vibration at highway speeds.
You may need a transfer case drop kit or a custom CV (Constant Velocity) driveshaft. For rear leaf springs, using degree shims can help tilt the differential back into alignment with the output shaft. Proper geometry ensures a smooth, quiet ride.
Correcting the Scrub Radius
When you add height and larger tires, you change the scrub radius. This is the distance between the center of the tire’s footprint and where the steering axis meets the ground. A massive scrub radius makes the truck hard to steer and wears out wheel bearings.
To fix this, pay close attention to your wheel offset and backspacing. You want a wheel that keeps the tire centered as much as possible over the hub. This reduces the leverage placed on your steering components and keeps your ball joints healthy.
The Dangers of Stacking Lift Components
One of the most common mistakes when researching how to lift a lifted truck is the temptation to “stack” parts. This usually means putting a lift block on top of another lift block in the rear. This is extremely dangerous and is illegal in many states.
Stacking blocks creates massive axle wrap. When you accelerate, the axle tries to rotate, and the leverage from the tall blocks can spit them out from under the leaf springs. This causes the axle to detach from the truck, leading to a total loss of control.
Similarly, stacking two coil spacers in the front is a recipe for disaster. It can cause the coil spring to “bind” or pop out of the bucket. If you need more height, always choose a single, engineered component rather than a pile of spacers.
Essential Tools for the Job
Lifting a truck that is already high off the ground requires specialized equipment. Your standard 2-ton floor jack likely won’t reach the frame anymore. You will need a high-lift floor jack and 6-ton or 12-ton jack stands for safety.
- Heavy-Duty Impact Wrench: Suspension bolts are often rusted and torqued to high specs.
- Torque Wrench: Critical for ensuring your U-bolts and control arms are tightened to factory standards.
- PB Blaster or Liquid Wrench: Start soaking your bolts 24 hours before the project.
- Spring Compressor: If you are swapping front coils, this tool is a literal lifesaver.
- Ratcheting Tie Downs: These are helpful for pulling axles into alignment during reassembly.
Step-by-Step Execution for Adding More Height
Once you have your parts and tools, park the truck on a level concrete surface. Chock the wheels that are staying on the ground. If you are lifting the front, start by loosening the lug nuts while the tires are still touching the floor.
- Support the Frame: Jack up the truck and place your heavy-duty stands under the frame rails. Ensure the truck is stable.
- Support the Axle: Use your jack to take the tension off the suspension components you are removing.
- Disconnect Linkages: Remove the sway bar end links, brake line brackets, and shocks.
- Swap the Components: Remove the old springs or spacers and install the new, taller versions.
- Check Alignment: Ensure the centering pins on leaf springs are seated correctly in the axle pads.
- Torque Everything: Tighten all bolts to the manufacturer’s specification. Do the final torque on control arms while the truck is back on its own weight.
After the installation, your steering wheel will likely be off-center. Do not drive long distances like this, as it can confuse your Electronic Stability Control (ESC) system. Take the truck to a professional alignment shop immediately.
Post-Lift Maintenance and Re-Torquing
The work doesn’t end when the truck leaves the garage. New suspension components tend to “settle” after the first few miles. It is vital to re-torque all bolts after the first 50 miles and again at 500 miles.
Pay special attention to the U-bolts on the rear axle. These are known to stretch slightly under load. If they become loose, your axle can shift, ruining your alignment and potentially causing an accident. Check your shocks for leaks and ensure no lines are rubbing against the tires.
Grease any new zerk fittings on your control arms or ball joints. High-quality synthetic grease will prevent the squeaking often associated with aftermarket lift kits. Regular maintenance is the key to keeping a tall truck reliable.
Frequently Asked Questions About how to lift a lifted truck
Can I use a leveling kit and a suspension lift together?
Yes, many people add a 1-2 inch leveling spacer to a 4-inch or 6-inch suspension lift. However, you must ensure your CV axles and control arms can handle the increased angle. If the angles are too sharp, you will experience premature wear or vibration.
Will lifting my truck higher void my warranty?
According to the Magnuson-Moss Warranty Act, a dealer cannot void your entire warranty just because of a lift. However, they can deny coverage for specific failures caused by the lift, such as worn wheel bearings or snapped axles. Always check with your local dealer first.
How much does it cost to add more height?
If you are just adding a body lift, you might spend $300 to $600. If you are replacing a full suspension system with a taller one, expect to pay between $1,500 and $5,000 depending on the quality of the shocks and components used. Labor costs will add significantly to these totals.
Do I need to re-gear my truck after adding more lift?
If the extra lift allows you to run significantly larger tires (e.g., jumping from 33s to 37s), you should definitely re-gear your differentials. This restores your power band and prevents your transmission from overheating due to the increased rotating mass.
Conclusion: Height with Responsibility
The process of how to lift a lifted truck is a journey in mechanical engineering. While the visual reward of a towering rig is undeniable, the true success lies in the details you can’t see. By focusing on proper geometry, avoiding the dangers of stacking parts, and upgrading your supporting components, you ensure your truck remains a capable tool rather than a garage ornament.
Remember that a higher center of gravity requires a change in driving habits. Take turns slower, increase your following distance, and always be mindful of your overhead clearance. A well-built, tall truck is a point of pride for any DIY mechanic or off-roader.
Take your time, use the right tools, and never compromise on safety. Your rig is an extension of your personality—make sure it’s built to last. Stay safe on the trails and enjoy the view from the top!
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