EVIL ENERGY 350 CFM Performance 2-barrel Carburetor

SPECIFICATIONS

The Evil Energy 350 CFM 2-Barrel Carburetor is engineered for performance enthusiasts seeking instant throttle response, smooth idle, and reliable high-RPM power. Whether you're upgrading a worn-out unit or building a high-performance street or oval-track car, this 350 CFM 2-Barrel Carburetor delivers precision and strength where it matters most.

Crafted with CNC-machined prime alloy, it resists rust and corrosion while maintaining structural integrity over time. The manual choke, 30cc accelerator pump, and calibrated jets ensure an efficient air-fuel mixture and better power delivery even under aggressive throttle.

Key Performance Highlights

Designed for easy installation—just bolt it on and go. This Evil Energy 350 CFM 2-barrel performance carburetor is ideal for high-performance engines, delivering a more precise air-fuel mixture and helping maintain engine stability even at high RPMs.

• Instant Response – Lightning-fast throttle reaction at every RPM
• Plug & Play Installation – Fits OEM manifolds, no tuning required
• Fuel Atomization Efficiency – Improved fuel delivery for smoother combustion
• Idle Smoothness – Stable idle and better cold starts with manual choke
• High-RPM Power – Built for aggressive driving and track performance
• Built to Last – Lightweight, rust-proof alloy, CNC-machined for precision

Application Notes

• Easy bolt-on installation—no complex modifications needed
• Perfect for street use, track cars, muscle car rebuilds, and classic upgrades
  
• Not remanufactured — brand new condition

⚠️ Fitment Restrictions

This carburetor is ideal for high-performance engines, delivering precise fuel delivery and durability for years to come. 

Not allowed on:

• 1966 and newer U.S. manufactured California certified vehicles
• 1968 and newer U.S. manufactured Federal certified vehicles
• 1968 and newer foreign manufactured vehicles
  
• Not fit for boats, not for use on any speed changer

Why Choose Evil Energy?

Backed by a passion for precision and performance, Evil Energy carburetors are built to fuel your driving ambitions—whether you're tuning for the street or the track. The Evil Energy 350 CFM 2-barrel carburetor delivers a proven balance of power, responsiveness, and reliability.

❓ FAQs

Q1: What CFM carb do I need for a 350?
A: For a standard small-block Chevy 350 engine, a 350–600 CFM carburetor is typically ideal, depending on cam, compression, and RPM range. The Evil Energy 350 CFM 2-barrel carburetor offers precise fuel delivery for street use and light performance builds under 5,500 RPM.

Q2: Is a 650 CFM carb too big for a 350?
A: It can be. If your 350 engine is mostly stock or tuned for low to mid-range torque, a 650 CFM carburetor may be oversized, causing sluggish throttle and poor fuel efficiency. That’s why a 350 CFM 2-barrel performance carburetor is a better match for street-driven 350s.

Q3: How much horsepower does a 750 CFM carburetor support?
A: A 750 CFM carb can support up to 500+ horsepower in high-RPM, high-compression engines. However, installing one on a mild 350ci street engine may cause overfueling. For builds under 300 HP, the Evil Energy 350 CFM carb provides more controlled air-fuel delivery.

Q4: Can you have too much CFM on a carburetor?
A: Yes. Too much CFM can lead to poor throttle response, reduced low-end torque, and inefficient combustion. Always match carb CFM to your engine's airflow demands. A 350 CFM carburetor is ideal for smaller V8s or street setups where crisp throttle and idle stability are key.

Q5: How do I choose the right CFM for my carburetor?
A: Use this formula: CFM=(CIDxRPMxVE)/3456
For a 350 engine at 5,000 RPM with 85% volumetric efficiency, the result is around 430 CFM, meaning a 350–450 CFM carburetor is suitable for street and oval use.

Q6: How many CFM is a Quadrajet carburetor?
A: Most Quadrajets are rated at 750 or 800 CFM, but they use small primaries and large secondaries. While high in theoretical CFM, they behave more conservatively under light throttle. In contrast, a dedicated 350 CFM 2-barrel carb like Evil Energy's ensures consistent performance throughout.

Q7: Is the Evil Energy 350 CFM carburetor good for racing?
A: Yes—for oval track, bracket racing, and street/strip builds under 300 HP, this carburetor delivers responsive throttle, smooth idle, and stable top-end performance.

Q8: Will this carburetor improve throttle response?
A: Absolutely. With a 30cc accelerator pump, manual choke, and precision machining, this carb offers instant response and better off-the-line acceleration compared to worn or oversized units.

Q9: Can I use this carburetor with an automatic transmission?
A: Yes. The Evil Energy 350 CFM 2-barrel Carburetor is compatible with A/T kickdown linkages for GM, Ford, and Chrysler, making it a great upgrade for daily drivers and classic builds.

Q10: How Does a Carburetor Work?

Not sure how a carburetor actually functions? Understanding the basics helps you make the right upgrade.

A carburetor mixes air and fuel in the right ratio before it enters your engine's combustion chamber. When you press the gas pedal, a throttle valve opens inside the carb, allowing more air to flow through. At the same time, the venturi effect draws in fuel from the jets, atomizing it into a fine mist for clean, powerful combustion.

The Evil Energy 350 CFM 2-barrel carburetor uses this principle—paired with modern CNC precision and calibrated fuel circuits—to give you better throttle response, idle control, and engine power.

👉 Learn More: How Does a Carburetor Work?