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EC 441INT EC Intake Manifold 1.125 HL to Briggs Animal
441INT EC Intake Manifold 1.125" HL to Briggs Animal
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EC 441INT EC Intake Manifold 1.125 HL to Briggs Animal

Part Number: 441INT
Online Price: $49.95
EC 441INT Billet Intake – For 1.125 HL Carburetors on Briggs Animal & LO206
Availability: In Stock.

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Description

EC 441INT Billet Intake Manifold – 1.125” HL & EC X380 Carburetor to Briggs Animal/LO206

Precision-Engineered for Open Class Power & Performance


The EC 441INT Billet Intake Manifold is specifically designed to adapt 1.125” Tillotson HL-series carburetors, including the race-winning EC X380 Intimidator, to Briggs Animal, Intek 6.5HP, and LO206 engines. This intake does not fit Briggs World Formula heads.


Built for serious open-class competition, the 441INT delivers the ideal airflow, vacuum signal, and port alignment required to unleash maximum horsepower and throttle response. Whether you're running ported cast heads or billet heads, this intake manifold ensures precise fuel delivery and top-end power—giving you the edge to dominate on race day.


Why Choose the EC X380 Intimidator with the 441INT?

The X380-1 Intimidator is the most advanced 1.125” OHV carburetor on the market, purpose-built for methanol-powered engines. Compared to older HL-380A/B models, which were designed for flathead engines, the X380-1 offers:

  • Optimized fuel circuits for methanol
  • Explosive throttle response and superior mid-to-high RPM power
  • Consistent tuning with fewer compromises in varied conditions

When paired with the EC 441INT intake, it’s a podium-proven combination.


CNC-Machined for Performance and Fitment

Each EC 441INT manifold is CNC-machined from premium billet aluminum to match the intake port geometry of high-flow, big valve cylinder heads. Engineered for unrestricted performance:

  • Laminar airflow for maximum velocity and fuel atomization
  • Pulse port precision for consistent diaphragm carb function at high RPM
  • Tight tolerance fitment—no port mismatch or turbulence


Intake Runner Length & Tuning Explained

The length and shape of your intake runner can make or break your tune. Diaphragm carburetors like the HL-series rely heavily on a strong vacuum pulse to operate. Here’s what matters:

  • Longer runners = weaker pulse = sluggish response
  • Shorter runners = stronger signal = snappier throttle
  • The 441INT is engineered to maintain that balance—maximizing airflow without sacrificing pulse strength, making it ready to race right out of the box.


What’s Included

  • EC 441INT Billet Intake Manifold
  • Precision-machined pulse fitting
  • Full mounting hardware kit


Compatibility

Carburetors (1.125” bore):

  • Tillotson HL-380, HL-380A, HL-380B
  • EC X380 Intimidator Series

Engine Platforms:

  • Briggs Animal
  • Briggs Intek 6.5 HP
  • Briggs LO206 (not compatible with World Formula heads)

Tip: Using a small valve head? Consider the EC 443INT intake manifold with a 1” HL-304WX carburetor for optimal flow and tuning.

FAQ

Q1: What engines are compatible with the EC 441INT manifold?

A: The EC 441INT fits Briggs Intek 6.5hp, Briggs Animal, and Briggs LO206 engines. It does not fit Briggs World Formula cylinder heads.


Q2: What carburetors does the EC 441INT support?

A: It supports all 1.125” Tillotson HL-series carburetors, including the HL-380, HL-380A/B, and the EC X380 Intimidator Series—all optimized for methanol and OHV racing.


Q3: Why choose this intake over a longer runner design?

A: Diaphragm carbs like the HL-series require a strong intake pulse. Longer runners reduce signal strength. The 441INT is designed for the best balance between airflow and vacuum signal, giving you sharp throttle response and reliable tuning.


Q4: Does it include all the hardware I need to install?

A: Yes. The 441INT comes with a precision-machined pulse fitting and a complete mounting hardware kit for quick and easy installation.


Q5: Can I use this with a smaller valve cylinder head?

A: For small valve heads, we recommend the EC 443INT manifold paired with our 1” HL-304WX carburetor for optimized flow and better fuel signal matching.


Q6: What makes the EC X380 better than older HL-380 carbs?

A: The EC X380-1 is specifically tuned for OHV engines and methanol. It offers more power, better throttle response, and more stable tuning than the flathead-focused HL-380A/B.

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