Upgrading the turbo on your LBZ Duramax can unlock significant power gains and improve towing efficiency. We researched and compared the top options based on manufacturer specifications, published industry standards, and aggregated owner feedback from forums and review sites. Our evaluation focuses on real-world performance, durability, and value to help you choose the right turbo for your build.
| Photo | Product | Score | Buy |
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Garrett GT3788VA Top Pick Stock replacement, 60mm inducer, 88mm turbine, V-band outlet |
9.0 | 🛒 Check Price |
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Fleece Performance Cheetah S480 Best Value S480 frame, 74mm inducer, 96mm turbine, T4 flange |
8.7 | 🛒 Check Price |
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Industrial Injection Firepunk 66mm Premium 66mm inducer, 88mm turbine, billet compressor wheel, T4 divided |
8.4 | 🛒 Check Price |
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ATS Aurora 3000 Efficient 59mm inducer, 68mm turbine, ball bearing, integrated wastegate |
8.1 | 🛒 Check Price |
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MPI 62mm Drop-In Turbo Balanced 62mm inducer, 76mm turbine, journal bearing, direct fit |
7.8 | 🛒 Check Price |
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Banks Power Ram-Air 62mm Trusted Brand 62mm inducer, 76mm turbine, journal bearing, cast compressor |
7.5 | 🛒 Check Price |
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Wicked Diesel 72mm S300 Budget 72mm inducer, 83mm turbine, journal bearing, T4 flange |
7.2 | 🛒 Check Price |
1. Garrett GT3788VA: Top Pick
The Garrett GT3788VA is a popular direct replacement turbo for the LBZ Duramax, known for its balance of performance and reliability. We found from owner feedback that it spools quickly and supports up to 500 wheel horsepower with appropriate tuning and fueling upgrades. The dual ball bearing cartridge reduces lag and enhances durability, making it a strong choice for daily drivers and mild performance builds.
However, the Garrett GT3788VA commands a higher price than some alternatives, which may not suit budget-conscious buyers. It is not designed for extreme power levels beyond 600 horsepower, so those aiming for a high-horsepower build should consider larger options. Skip this if you need a turbo for all-out racing or want the absolute lowest cost.
- Direct bolt-on for LBZ Duramax with no modifications required
- Proven 500+ wheel horsepower capability with supporting mods
- Dual ball bearing center section for quick spool and long life
Pros: Excellent spool and low-end torque; High quality materials and manufacturing
Cons: Price premium over some competitors
2. Fleece Performance Cheetah S480: Best Value
The Fleece Performance Cheetah S480 offers a budget-friendly path to significant power gains for the LBZ Duramax. Based on our research of owner reviews, it delivers strong mid-range and top-end power for those targeting 500-650 wheel horsepower. The included wastegate actuator and installation kit simplify the upgrade process, though tuning and fuel system upgrades are recommended.
On the downside, the S480’s larger frame can result in more turbo lag compared to stock or smaller turbos, which may be less ideal for stop-and-go driving. It also requires careful tuning to avoid excessive smoke and EGTs. Skip this if you prioritize quick spool for daily commuting or are not prepared to invest in supporting modifications.
- Affordable upgrade for 500-650 horsepower range
- Includes wastegate actuator and installation kit
- Proven in towing and street applications
Pros: Great price-to-performance ratio; Reliable for moderate power levels
Cons: Spool slower than smaller turbos; Requires tuning and supporting mods
3. Industrial Injection Firepunk 66mm: Premium
The Industrial Injection Firepunk 66mm is designed for enthusiasts seeking maximum power. Our evaluation of spec sheets and user reports indicates it can support up to 700 wheel horsepower with proper supporting mods. The billet compressor wheel and divided T4 housing help improve airflow and spool characteristics compared to older designs.
However, this turbo is not a direct replacement and may require custom fabrication for intake and exhaust connections. Its price is also significantly higher than many alternatives. Skip this if you are on a tight budget or prefer a simple bolt-on upgrade without additional modifications.
- High-flow billet compressor wheel for up to 700 horsepower
- Divided T4 housing for improved response
- Heavy-duty journal bearing construction
Pros: Excellent top-end power potential; Durable construction for high boost
Cons: Higher price point; Not a direct bolt-on; may need custom piping
4. ATS Aurora 3000: Efficient
The ATS Aurora 3000 is a drop-in upgrade that emphasizes drivability and towing performance. From owner feedback, it spools quickly and provides a noticeable improvement in low-end torque without sacrificing reliability. The dual ball bearing and integrated wastegate make for a straightforward installation.
However, this turbo’s power potential is limited compared to larger units, making it less ideal for those chasing high horsepower numbers. It also comes at a moderate price. Skip this if you plan to build a high-output race truck or need a turbo that can handle over 500 horsepower reliably.
- Dual ball bearing for quick spool and low lag
- Integrated wastegate simplifies installation
- Designed for improved towing and daily driving
Pros: Very responsive, great for towing; Easy installation with integrated wastegate
Cons: Limited power ceiling around 450-500 horsepower; Less suited for high-performance builds
5. MPI 62mm Drop-In Turbo: Balanced
The MPI 62mm Drop-In Turbo is a cost-effective option for LBZ owners wanting a modest power bump. Based on our research of owner experiences, it fits directly in place of the stock unit and can support up to 550 wheel horsepower with tuning. It offers a solid improvement over stock for towing and daily driving.
However, the journal bearing design is less durable and may have slower spool compared to ball bearing turbos. It is also not ideal for sustained high-boost applications. Skip this if you demand the fastest spool or plan to push over 550 horsepower regularly.
- Direct bolt-on replacement for stock turbo
- Good for 450-550 wheel horsepower
- Affordable price point
Pros: Simple installation, no modifications needed; Decent power increase for the cost
Cons: Journal bearing may have less durability than ball bearing; Spool not as sharp as ball bearing options
6. Banks Power Ram-Air 62mm: Trusted Brand
The Banks Power Ram-Air 62mm is a well-engineered turbo from a reputable brand. According to spec sheets, it focuses on reducing EGTs and improving overall efficiency rather than maximizing peak power. It comes with thorough installation instructions and hardware, making it a user-friendly choice for those new to turbo upgrades.
However, the cast compressor wheel is less efficient than billet options, and power gains are modest (around 400-450 wheel horsepower). It is also priced higher than similar performing units. Skip this if you are seeking the highest horsepower or the best value for raw performance.
- Banks reputation for quality and support
- Designed for improved airflow and EGT reduction
- Includes installation hardware and instructions
Pros: Trusted brand with good customer service; Helps lower exhaust gas temperatures
Cons: Cast wheel not as efficient as billet; Moderate power gains compared to competitors
7. Wicked Diesel 72mm S300: Budget
The Wicked Diesel 72mm S300 is a budget-friendly large-frame turbo that can deliver big power numbers. Based on owner feedback, it can support over 600 wheel horsepower when paired with appropriate fueling and tuning. Its simple journal bearing design makes it easy to rebuild if needed.
However, we found that this turbo suffers from pronounced lag and may not be as durable as premium options. Quality control can be inconsistent, and it often requires custom installation work. Skip this if you want a refined driving experience or need a turbo that will last for many miles without issues.
- Lowest cost option for large frame turbo
- Capable of 600+ horsepower with supporting mods
- Simple design, easy to rebuild
Pros: Very affordable for the size; High power potential
Cons: Significant turbo lag; Lower quality control and durability
Frequently Asked Questions
What is the best turbo for a stock LBZ Duramax?
For a stock LBZ Duramax, we recommend the Garrett GT3788VA or ATS Aurora 3000. Both are direct bolt-ons that provide improved performance without requiring major modifications. They offer excellent spool and reliability for daily driving and towing.
Do I need to tune my LBZ after installing a new turbo?
Yes, tuning is highly recommended to safely take advantage of the increased airflow. Without proper tuning, you risk high exhaust gas temperatures, excessive smoke, and potential engine damage. Most turbo upgrades require a custom tune to optimize fuel delivery and boost levels.
What supporting mods are needed for a turbo upgrade?
Supporting mods typically include a lift pump or upgraded fuel system, exhaust system (downpipe and exhaust), intake, and gauges (boost, EGT, fuel pressure). For larger turbos, you may also need upgraded injectors, CP3 pump, and head studs to handle increased power.
How much horsepower can I expect from a turbo upgrade?
Horsepower gains vary by turbo size and supporting mods. A drop-in 62mm turbo can yield 450-550 wheel horsepower, while larger turbos like the S480 can reach 600-650 wheel horsepower. The Garrett GT3788VA typically supports up to 500 wheel horsepower. Actual results depend on tuning and other upgrades.
Are ball bearing turbos worth the extra cost for the LBZ?
Ball bearing turbos offer quicker spool and better transient response, which can improve drivability and towing performance. They also tend to be more durable. If you prioritize low lag and a responsive throttle, the extra cost is worthwhile. For budget builds, journal bearing turbos can still perform well.
Our Verdict
After comparing specs and owner feedback, our top pick is the Garrett GT3788VA for its excellent balance of performance, spool, and reliability. For those on a budget, the Fleece Performance Cheetah S480 offers the best value for moderate power goals. Choose based on your power targets and willingness to perform supporting modifications.
