We researched and compared the top supercharger kits for the 350 small block Chevy, evaluating manufacturer specs, published industry standards, and aggregated owner feedback. Our goal is to help you choose a system that delivers reliable boost without breaking the bank or your engine. Whether you’re building a street cruiser or a strip warrior, we’ve got you covered.
| Photo | Product | Score | Buy |
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Weiand 142 Blower Kit Best Overall 142 ci roots-type blower, up to 6 psi boost, includes carburetor adapter |
9.0 | 🛒 Check Price |
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BDS 6-71 Supercharger Kit Best for High HP 6-71 roots-type blower, 10-15 psi boost, complete system |
8.7 | 🛒 Check Price |
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ProCharger P-1SC-1 Supercharger Best Centrifugal Centrifugal supercharger, up to 10 psi, self-contained oil system |
8.4 | 🛒 Check Price |
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Vortech V-3 Si-Trim Supercharger Best Value Centrifugal Centrifugal supercharger, up to 12 psi, self-contained oil system |
8.1 | 🛒 Check Price |
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Holley 300-159 Supercharger Kit Best Bolt-On Roots-type supercharger, 6-8 psi, includes intake manifold |
7.8 | 🛒 Check Price |
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Edelbrock E-Force 1500 Supercharger Premium Choice Twin-screw supercharger, 8-10 psi, intercooled |
7.3 | 🛒 Check Price |
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Powerdyne BD-11A Supercharger Budget Pick Centrifugal supercharger, 5-7 psi, belt-driven |
7.0 | 🛒 Check Price |
1. Weiand 142 Blower Kit: Best Overall
The Weiand 142 is a classic roots-type blower that has powered countless SBC builds. In our evaluation, the kit’s machining quality and fitment are excellent, and owner feedback consistently praises its immediate power delivery. The included carburetor adapter and drive components simplify installation, making it a favorite among DIY enthusiasts.
However, the Weiand 142 produces only modest boost (around 6 psi), so it may not satisfy those chasing extreme horsepower. Additionally, the tall blower housing can interfere with stock hoods, requiring a cowl hood or scoop. If you need a street-friendly supercharger with proven reliability and don’t mind minor modifications, this is a top choice.
- Proven roots-type design for instant throttle response
- Includes all necessary mounting hardware and belt
- Compatible with most aftermarket intakes
Pros: Strong mid-range torque; Comprehensive kit
Cons: May require hood clearance modifications
2. BDS 6-71 Supercharger Kit: Best for High HP
The BDS 6-71 is a serious supercharger for serious power. We researched its specifications and found it capable of supporting over 700 horsepower with proper supporting mods. Owner feedback highlights its durability and consistent boost, even under sustained high-RPM use. The kit comes with a polished finish that looks stunning under the hood.
On the downside, this is not a bolt-on affair. It demands a forged rotating assembly, upgraded fuel system, and often a custom cam. The cost of the kit plus necessary engine work is substantial. If you’re building a dedicated race car or a high-horsepower street machine and have the budget, the BDS 6-71 delivers. Otherwise, look elsewhere.
- Massive airflow for 600+ hp builds
- Heavy-duty cast iron case and rotors
- Includes injector hat and linkage
Pros: Extreme power potential; Top-tier build quality
Cons: Requires extensive engine prep
3. ProCharger P-1SC-1 Supercharger: Best Centrifugal
The ProCharger P-1SC-1 is a centrifugal supercharger that provides smooth, efficient boost. Based on our research of its design, the self-contained oil system eliminates the need to tap into the engine’s oil pan, simplifying installation. Owner feedback notes that it makes impressive top-end power while keeping intake temperatures low thanks to the included air-to-air intercooler.
However, centrifugal superchargers lack the instant low-end grunt of a roots blower. If you’re looking for tire-shredding torque off idle, this may not be ideal. Additionally, the kit’s price is higher than some roots options. It’s best for those who want a reliable, streetable power increase with a focus on high-rpm performance.
- Self-contained oil system, no engine oil tap
- Quiet helical-cut gears
- Includes intercooler and bypass valve
Pros: Efficient and cool intake temps; Easy installation with no oil lines
Cons: Less low-end torque than roots
4. Vortech V-3 Si-Trim Supercharger: Best Value Centrifugal
The Vortech V-3 Si-Trim is a popular centrifugal choice for budget-conscious builders. We compared its specs to similar units and found it offers competitive airflow for the price. Owner reviews highlight its straightforward installation and noticeable power gains, especially when paired with a proper tune.
However, some users report belt slip issues when pushing boost above 10 psi, which can lead to inconsistent performance. The included bypass valve is functional but not as robust as aftermarket options. If you’re building a mild street car and want a reliable boost without breaking the bank, this is a solid pick. For high-boost applications, consider upgrading the belt system.
- Compact design fits many applications
- Includes high-flow bypass valve
- Polished finish
Pros: Good power per dollar; Relatively quiet operation
Cons: Belt slip concerns at high boost
5. Holley 300-159 Supercharger Kit: Best Bolt-On
The Holley 300-159 is designed as a true bolt-on supercharger for the SBC. We researched its installation process and found that it uses a dedicated intake manifold that replaces the stock unit, making it one of the simplest kits to install. Owner feedback indicates that it provides a noticeable seat-of-the-pants improvement without major engine modifications.
That said, the Holley kit is not for power junkies. Its maximum boost is around 8 psi, and the blower itself is relatively small. You won’t be making 500 hp with this setup. Also, some owners have reported fitment issues with aftermarket valve covers. It’s best for enthusiasts who want a mild boost increase with minimal hassle.
- Complete kit with manifold and carb spacer
- Bolt-on installation, no machining required
- Polished finish
Pros: Easy installation; Good value for a complete kit
Cons: Limited power ceiling
6. Edelbrock E-Force 1500 Supercharger: Premium Choice
The Edelbrock E-Force 1500 is a premium twin-screw supercharger that offers excellent efficiency and low intake temperatures. We compared its specifications to other systems and noted its integrated intercooler and calibration module, which simplify tuning. Owner feedback praises its smooth power delivery and build quality.
However, the price is significantly higher than comparable kits, and the available support for custom tuning is limited. Additionally, the twin-screw design can produce whine that some find annoying. If budget is no object and you want a top-tier, turnkey supercharger, the E-Force is a contender. For most builders, the cost-to-benefit ratio is hard to justify.
- Twin-screw design for efficient boost
- Integrated intercooler reduces IATs
- Includes calibration module
Pros: High-quality construction; Good thermal management
Cons: Very expensive; Limited aftermarket support
7. Powerdyne BD-11A Supercharger: Budget Pick
The Powerdyne BD-11A is a budget-friendly centrifugal supercharger that offers a taste of forced induction without a huge investment. We researched its specifications and found it uses a belt-driven design that is relatively easy to install. Owner feedback suggests it can provide a modest power increase, but many report issues with belt slippage and bearing wear over time.
Durability is the main concern here. The unit is not built to withstand sustained high-rpm use, and replacement parts can be hard to find. If you’re on a tight budget and only plan to run low boost occasionally, it might work. But for a reliable daily driver or performance build, we recommend saving for a better option.
- Affordable entry-level supercharger
- Lightweight aluminum construction
- Includes mounting bracket and pulley
Pros: Lowest price point; Simple design
Cons: Lower durability and reliability
Frequently Asked Questions
What is the difference between roots and centrifugal superchargers for the 350 SBC?
Roots superchargers (like Weiand, BDS) sit on top of the intake and provide instant boost at low RPM, making them great for street driving and throttle response. Centrifugal superchargers (like ProCharger, Vortech) are belt-driven compressors that build boost progressively with engine speed, offering better efficiency and top-end power but less low-end torque. Your choice depends on your driving style and power goals.
Do I need to upgrade my fuel system for a supercharger?
Yes, almost always. Adding boost increases the engine’s air intake, requiring more fuel to maintain the proper air-fuel ratio. We recommend upgrading to a high-flow fuel pump, larger injectors or carburetor jets, and a fuel pressure regulator. Many supercharger kits include recommendations, but it’s essential to consult with a tuner to avoid lean conditions that can damage the engine.
Will a supercharger fit under a stock hood on a 350 SBC?
Most roots-style superchargers (especially taller ones like the BDS 6-71) require a hood scoop or cowl hood for clearance. Centrifugal superchargers often fit under the stock hood because they mount on the front of the engine. However, some kits may require minor modifications. Always check the kit’s dimensions and your engine bay layout before purchasing.
What supporting modifications are needed for a supercharged 350 SBC?
Beyond the fuel system, we recommend a forged rotating assembly (pistons, rods, crank) if you plan to run over 8 psi of boost. Upgraded ignition, a high-performance camshaft, and a robust cooling system are also advisable. Head gaskets should be replaced with MLS (multi-layer steel) units. Finally, a proper dyno tune is critical to ensure safe and reliable operation.
Can I install a supercharger myself, or should I hire a professional?
Many supercharger kits are designed for experienced DIY mechanics, but the complexity varies. Centrifugal kits are generally easier to install, while roots kits may require intake manifold removal and hood modifications. If you’re comfortable with engine work and have basic tools, a bolt-on kit is doable. However, for tuning and final calibration, we strongly recommend a professional tuner to avoid engine damage.
Our Verdict
After researching and comparing the top superchargers for the 350 SBC, our top pick is the Weiand 142 Blower Kit for its proven roots-type design, comprehensive package, and reliable performance for street builds. The runner-up is the BDS 6-71 Supercharger Kit for those seeking extreme horsepower and don’t mind the additional cost and engine prep. Choose based on your power goals, budget, and willingness to modify your engine.
