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EC 476INT Intake Manifold 1.125 HL to Blank
476INT EC Intake Manifold 1.125" HL to Blank
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EC 476INT Intake Manifold 1.125 HL to Blank

Part Number: 476INT
Online Price: $45.00
EC 476INT Universal Intake – HL 1.125" to Blank Adapter
Availability: In Stock.

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Description

EC 476INT Universal Intake Manifold – 1.125" HL Flange to Blank


Adapt Your HL Carburetor to Any Custom Build


The EC 476INT Universal Intake Manifold is a precision-machined adapter designed to fit Tillotson HL-380, EC X380, and similar HL-series diaphragm carburetors. It provides a seamless solution for adapting your carburetor to custom cylinder heads or for changing the carb orientation in high-performance engine builds.


This intake features a 1.125" bore on the HL flange side and a blank universal face, giving builders full flexibility to match various bolt patterns, port shapes, and mounting angles for small engines, karts, or experimental setups.


Key Features:

  • HL flange side: 0.310" thick with a 1.125" bore and pulse port for consistent diaphragm operation
  • Universal blank side: 0.850" thick, allowing for custom machining, mounting angles, and bolt spacing
  • No pre-drilled holes on the universal side for complete orientation control
  • CNC-machined from billet aluminum for strength and thermal stability
  • No built-in pulse hole for external fuel pumps—intended for HL diaphragm carbs only


Ideal Applications:

  • Custom intake fabrication for race karts, minibikes, and small engines
  • Adapting HL-style carburetors to non-standard or modified cylinder heads
  • Custom port-matching, angle machining, or reorienting carburetors for better fitment


Pro Tip:

Choosing the correct carburetor for your build is essential. While the Tillotson HL-380 is optimized for methanol-fueled open flathead engines, it may not be ideal for OHV, OHC, or 2-stroke applications. For more flexibility and tuning support, we recommend the EC X380 Intimidator—engineered for broader compatibility and superior performance.


FAQ

1. What carburetors is this intake designed for?

The EC 476INT is designed for Tillotson HL-series diaphragm carburetors, including the HL-380 and EC X380models. It features a 1.125" bore on the HL flange side.


2. What’s the purpose of the blank side?

The blank side is fully customizable. At 0.850" thick, it allows for custom machining of mounting holes, angles, and ports to fit various custom heads and engine layouts.


3. Is the intake drilled for fuel pump pulses?

Yes—the HL flange side includes a built-in pulse port to operate the carburetor's internal diaphragm system. It does notinclude an external pulse hole for fuel pumps.


4. Can this intake be used with gasoline or 2-stroke engines?

While physically compatible, we do not recommend the HL-380 for gasoline, OHV, OHC, or 2-stroke applications. Instead, consider the EC X380 Intimidator, designed with broader tuning capabilities.


5. What materials is it made from?

The EC 476INT is CNC-machined from solid billet aluminum for superior strength, heat resistance, and long-term durability in performance applications.

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