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XHR-4K EC Billet Intimidator Open Blockzilla Kit
XHR-4K EC Billet Intimidator Open Blockzilla Kit
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XHR-4K EC Billet Intimidator Open Blockzilla Kit

Part Number: XHR-4K
Your Price: $499.99
Availability: In Stock.

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XHR-4K EC Billet Intimidator Open Blockzilla Kit

This 1.355” (34.417mm) Carburetor built for Open Flatheads. Where the others fall short are in their initial design and intent for other engine applications (most commonly 2-Stroke). While all things are possible, the XHR is a far superior carburetor from start to finish. Our Intimidator Carburetors replaces our 3+3 Twlight Zone Custom built Tillotson carburetor($600-1000+) with a blank body ready for any fuel circuit and modifications to fit any type engine. These carburetors are built with custom plate stacks, billet needles, and our EC signature 3 piece throttle shaft. Unlike Tillotson HR carburetors that have a velocity ring (bull’s eye) the Intimidator does not. This increases flow significantly without disrupting the design of the carburetor.


The XHR-4K is designed for the Open Blockzilla

Fuel: Methanol(alcohol) pure methanol only, DO NOT BUY METHANOL WITH TOP LUBE OR ADD TOP LUBE.

Caution: WILL NOT WORK WITH ETHANOL E-85 or E-91 or any other type of ethanol.


Kit Items:

• X380 Carburetor

• Intake Manifold

• Intimidator Linkage

• Fuel Filter

• Walbro FPC1- Round Style Fuel Pump

Hi Side Needle Initial setting: 1 turns out

Low Side Needle Initial Setting: 2-1/2 turns out


Caution: Use only the Walbro FPC-1 Fuel pump!

Fuel pumps we do not support with our carburetors:

B&S fuel

Mikuni, and Mikuni knock offs

Plastic knock off of the Walbro WIP fuel pump (square pump)

If it doesn’t say Walbro then they have caused problem with our carburetors.

No electric fuel pumps.

If you have a fuel pump you rather use please give us a call so we can advise you.

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