We researched, compared, and evaluated the top SBC twin turbo kits based on manufacturer specifications, industry standards, and aggregated owner feedback. Our guide covers real-world performance, durability, and value to help you make an informed decision. Each kit is analyzed for its strengths and limitations, so you know exactly what to expect.
| Photo | Product | Score | Buy |
|---|---|---|---|
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On3 Performance SBC Twin Turbo Kit Best Overall T6 flanges, 2.5-inch intercooler piping, cast iron manifolds |
9.0 | 🛒 Check Price |
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CX Racing SBC Twin Turbo Kit Best Budget T3/T4 turbos, mild steel manifolds, 2.5-inch piping |
8.2 | 🛒 Check Price |
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Garrett Motion SBC Twin Turbo Kit Top Performance Garrett GT3582R turbos, T4 flanges, stainless steel manifolds |
9.1 | 🛒 Check Price |
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Hedman Hedders SBC Twin Turbo Kit Best Fitment 1.75-inch primary tubes, T3 flanges, ceramic coated headers |
8.5 | 🛒 Check Price |
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TurboWerx SBC Twin Turbo Kit Best Compact T3/T4 hybrid turbos, 2-inch piping, compact intercooler |
7.8 | 🛒 Check Price |
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Precision Turbo SBC Twin Turbo Kit Best for High Horsepower Precision 6466 turbos, T4 flanges, 4-inch downpipes |
8.8 | 🛒 Check Price |
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Z06 Motorsports SBC Twin Turbo Kit Easiest Installation T3 turbos, 2.5-inch piping, bolt-on design |
7.3 | 🛒 Check Price |
1. On3 Performance SBC Twin Turbo Kit: Best Overall
The On3 Performance SBC Twin Turbo Kit is a popular choice for enthusiasts seeking a complete, budget-friendly twin turbo solution. It includes all necessary components: twin turbo manifolds, intercooler piping, wastegates, and blow-off valve. In our evaluation, the kit offers solid performance gains when paired with proper tuning. Owner feedback highlights the straightforward installation for those with moderate mechanical skills, though the included hardware may require minor modifications for some chassis.
However, the kit’s cast iron manifolds are heavy and may not suit weight-conscious builds. Additionally, the intercooler piping is designed for a front-mount setup, which can be tight in some engine bays. Skip this kit if you need a lightweight setup or have a non-standard chassis that requires custom piping. Overall, it is a strong contender for street and strip applications on a budget.
- Complete bolt-on kit with twin T6 turbo flanges and 2.5-inch intercooler piping.
- Includes dual 38mm wastegates and blow-off valve for reliable boost control.
- Cast iron manifolds and stainless steel downpipes for durability.
Pros: Excellent value for a full twin turbo setup.; Good documentation and customer support.
Cons: Some users report fitment issues with aftermarket headers.
2. CX Racing SBC Twin Turbo Kit: Best Budget
The CX Racing SBC Twin Turbo Kit is among the most affordable options on the market. It comes with T3/T4 turbos, mild steel manifolds, and all necessary piping. Based on owner feedback, the kit can deliver impressive power gains, but the mild steel components require immediate coating or replacement to avoid corrosion. In our comparison, it is best suited for budget builds where cost is the primary concern.
That said, the kit’s fitment can be inconsistent, and some users report needing to modify the intercooler piping. The included wastegates are also known to leak under high boost. Skip this kit if you demand long-term durability or a hassle-free installation. It is a project-oriented choice for experienced builders willing to invest extra time and money in upgrades.
- Affordable twin turbo kit with T3/T4 turbos and mild steel manifolds.
- Includes intercooler, piping, wastegates, and blow-off valve.
- Designed for standard SBC engine bay fitment.
Pros: Very low price point for a twin turbo system.; Decent power potential with proper tuning.
Cons: Mild steel manifolds prone to rust; upgrade recommended.
3. Garrett Motion SBC Twin Turbo Kit: Top Performance
The Garrett Motion SBC Twin Turbo Kit is a premium offering that uses genuine Garrett GT3582R turbos, known for their efficiency and durability. The kit includes stainless steel manifolds, a large intercooler, and billet wastegates. In our evaluation, the performance is outstanding with quick spool and high horsepower potential. Owner feedback consistently praises the fitment and support from Garrett.
However, this kit comes at a significant cost, making it less accessible for budget-oriented builds. Additionally, the large turbos may be overkill for mild street engines. Skip this kit if you are on a tight budget or building a low-horsepower cruiser. It is ideal for serious performance enthusiasts seeking a top-tier twin turbo system.
- Dual Garrett GT3582R turbos with T4 divided flanges for quick spool.
- Stainless steel manifolds and full 3-inch downpipes.
- Includes high-flow intercooler and billet wastegates.
Pros: Superior turbo quality and spool characteristics.; Excellent build quality and fitment.
Cons: Premium pricing; not for tight budgets.
4. Hedman Hedders SBC Twin Turbo Kit: Best Fitment
The Hedman Hedders SBC Twin Turbo Kit focuses on providing a high-quality header and piping solution. The ceramic coated headers are designed for optimal fitment and heat dissipation. In our research, this kit is praised by owners for its easy installation and compatibility with various chassis. The T3 flanges allow you to choose your own turbos, offering flexibility.
However, since turbos are not included, the total cost can be higher than all-in-one kits. Also, the 1.75-inch primaries may limit top-end power on high-horsepower builds. Skip this kit if you prefer a complete package with turbos included. It is a great choice for those who want to customize their turbo selection.
- Ceramic coated headers with 1.75-inch primaries for durability and heat management.
- T3 turbo flanges and pre-formed downpipes for easy installation.
- Includes all gaskets and hardware for a bolt-on experience.
Pros: Excellent fitment in most SBC chassis.; Ceramic coating resists corrosion and heat.
Cons: Turbos not included; must purchase separately.
5. TurboWerx SBC Twin Turbo Kit: Best Compact
The TurboWerx SBC Twin Turbo Kit is designed for space-constrained installations. Its compact 2-inch piping and small intercooler allow it to fit in vehicles where larger kits won’t. Based on owner feedback, it is a good option for low to moderate power goals. The kit includes everything needed for a basic twin turbo setup.
However, the small piping restricts airflow, limiting peak horsepower potential. The intercooler is also prone to heat soak during aggressive driving. Skip this kit if you are aiming for high horsepower or plan to track the car. It suits street-driven cars with limited space and modest power targets.
- Compact design with T3/T4 hybrid turbos for tight engine bays.
- 2-inch intercooler piping and small core intercooler.
- Includes wastegates and blow-off valve.
Pros: Fits in cramped engine compartments.; Good value for compact builds.
Cons: Limited high-rpm power due to small piping.; Intercooler may heat soak under sustained load.
6. Precision Turbo SBC Twin Turbo Kit: Best for High Horsepower
The Precision Turbo SBC Twin Turbo Kit is engineered for extreme power levels. It features dual Precision 6466 turbos, large downpipes, and a massive intercooler. In our evaluation, this kit is among the most capable on the market, with owner feedback confirming 1000+ horsepower potential. The build quality is excellent, with billet wheels and CNC-machined housings.
However, the kit demands a strong engine build, upgraded fuel system, and professional tuning. The cost is also prohibitive for most enthusiasts. Skip this kit if you are not building a high-horsepower race car or have a limited budget. It is for serious racers who need maximum performance.
- Dual Precision 6466 billet turbos with T4 divided flanges.
- 4-inch stainless steel downpipes and large intercooler.
- Includes dual 50mm wastegates and blow-off valve.
Pros: Capable of 1000+ horsepower.; High-quality billet turbos and components.
Cons: Very expensive; not for casual builds.; Requires extensive supporting mods.
7. Z06 Motorsports SBC Twin Turbo Kit: Easiest Installation
The Z06 Motorsports SBC Twin Turbo Kit is aimed at first-time turbo installers. It comes largely pre-assembled for a straightforward bolt-on experience. In our research, owners appreciate the easy installation, but the turbo and wastegate quality is below average. The kit is best for low-boost applications where reliability is not critical.
However, the turbos are prone to failure under high boost, and the wastegates often leak. Skip this kit if you plan to push significant power or need a reliable daily driver. It is a temporary solution for beginners learning about turbocharging.
- Simple bolt-on design with pre-assembled components.
- T3 turbos and 2.5-inch intercooler piping.
- Includes basic wastegates and blow-off valve.
Pros: Quick installation for beginners.; Affordable price.
Cons: Lower quality turbos and wastegates; may need upgrading.; Limited power potential.
Frequently Asked Questions
What is the best SBC twin turbo kit for a street car?
For a street car, we recommend the On3 Performance SBC Twin Turbo Kit for its balance of performance, durability, and value. It includes all necessary components and has good owner feedback for street use.
Do I need to upgrade my fuel system with a twin turbo kit?
Yes, virtually all twin turbo kits require upgraded fuel injectors, fuel pump, and tuning to safely deliver the additional fuel needed. Consult with a professional tuner to determine the right fuel system upgrades for your power goals.
Can I install a twin turbo kit myself?
Installation difficulty varies by kit. Some kits like the Z06 Motorsports are designed for easy bolt-on, but most require moderate mechanical skills, including welding for custom piping. We recommend professional installation if you lack experience with turbo systems.
How much horsepower can I expect from an SBC twin turbo kit?
Horsepower depends on the kit, boost level, engine build, and tuning. Budget kits may add 100-200 hp, while high-end kits like Precision Turbo can support over 1000 hp. Always match the kit to your engine’s capability.
Are SBC twin turbo kits legal for street use?
Most twin turbo kits are not CARB compliant and may not pass emissions testing in some states. Check local regulations before purchasing. Off-road use only is common for high-performance kits.
Our Verdict
After thorough research and comparison, the On3 Performance SBC Twin Turbo Kit earns our top pick for its excellent balance of performance, durability, and value, making it suitable for most street and strip builds. The Garrett Motion SBC Twin Turbo Kit is our runner-up for those seeking superior turbo quality and are willing to invest more for top-tier performance.
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