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Carburetor Flange Guide

By: Skylar Drake01/13/2020 < Back to Blog Home
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So you've acquired a project, open the hood and find there's no carburetor or throttle body bolted atop your new engine. How do you find out what you need? This helpful walk-through will steer you through the various popular carburetor flanges and show you which options are available from Holley! When it comes to understanding what fits and what stays on the shelf, you need to begin by measuring the bolt spacing of your intake flange. Carburetors have a variety of bolt patterns (measured by length and width) and it's important to note you allow adequate space for throttle blades to open/close without binding. That's why Holley has provided handy reference drawings and a poster showing common bolt patterns.

**CLICK HERE TO DOWNLOAD POSTER!!!**


But what if you have a factory spreadbore intake and are looking to go more modern like Brawler's 600 CFM 4160? That's why Holley offers a variety of carburetor adapters that are perfect for converting from your old bolt pattern!


CLICK ON THE IMAGES BELOW FOR A PRINTABLE BOLT PATTERN DRAWING, THESE ARE SCALED TO SIZE AND CAN BE LAID ON YOUR EXISTING INTAKE TO VERIFY FITMENT!



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