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EC 400INT Intake Manifold 1-Inch HL to Briggs Flathead (Old Style 2 Hole)
400INT EC Intake Manifold 1.00 HL to Briggs Flathead (Old Style 2 Hole)
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EC 400INT Intake Manifold 1-Inch HL to Briggs Flathead (Old Style 2 Hole)

Part Number: 400INT
1 Review(s)
Your Price: $42.00
Intake Manifold EC 1.000 HL to Briggs Flathead Old Style 2 Hole
Availability: In Stock.

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400INT EC Intake Manifold fits a 1.00" Tillotson HL to the Old Style Model 13 Briggs Flathead Blocks with the 2-bolt hole intake. 

This may also fit the 3hp Briggs Flathead with the same bolt holes. The 1.00" Tillotson was the original limited, modified size carburetor and the size for the super stock classes. 

Designed and CNC machined to match each unique intake port shape precisely at the block or cylinder head entrance. (May vary on head type and model)The resulting action is no turbulence causing misalignment and much better control of the entire intake tract's laminar flow. By using the Tillotson carburetor, we can create the best angle through the port. The pulse hole is precisely located for increase pumping action at high RPM. All installation hardware included.

If you are looking at the length of the intake as a way of port length tuning for the engine, there are a few things you need to know. The Tillotson carburetor, being a diaphragm pump carburetor, needs a good vacuum or pulse signal from the intake. If you make your intake too long, then you lose signal to the carburetor and potentially hinder its tuning and performance. Tuning your port runner length is more of an exact science than many realize, and simply adding more length doesn't always net the gains you want; where you want. Your carburetor, head ports, and cam timing, as well as where you want your engine to gain, are all part of the science of port tuning. Unless you have the equipment, time, and money, it isn't easy to test the theory, and your gains may be minimal. 

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Customer Reviews

This Briggs HL manifold is AMAZING! They're very thoughtful to include studs and gaskets, and the manifold itself is a piece of CNC made ART! It's very heavy duty, made far better than OEM Briggs manifolds! Funny thing is that the pulse fitting isn't actually needed on an HL, since they have a pulse channel IN the manifold, but it's not hard to plug it off. It's really nice of them to use allen fasteners so it's easy to install and remove, and FINALLY! They made provision for tools to access the fasteners, which is one the Briggs and Stratton woefully neglected to include! There are literally NO FLAWS with the 400INT!
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Reviewed by: (Verified Buyer)  from Texas on 9/19/2020

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