Two Barrel Ultra Holley Performance Carburetor - Engine Builder Magazine
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Two Barrel Ultra Holley Performance Carburetor

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2bblUltraHP_smlHolley 2 barrel carburetors have been a mainstay in oval track racing for decades, but racers always want more.  They want more tuning ability, more durability, more weight savings and more features, so Holley listened and designed the all new Ultra HP 2 barrel carburetor.

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The new carb delivers the proven results of the Ultra HP 4bbl but now in a 500 CFM 2bbl. It’s all aluminum so it provides nearly 50% weight savings. It has no choke tower and an all new air entry area for smoother air flow, yet it retains the critical venturii and throttle bore dimensions for rule racing. It has large capacity HP fuel bowls, wedged float, dedicated race-only throttle lever, billet metering blocks and base plates, plus much more.

The new Ultra HP 2bbl carbs are available in two finishes – a vibratory polished with black billet (part number 0-4412BK) and a Hard Core gray hard coat anodized with black billet (part number 0-4412HB). They are already approved for use in the NASCAR Mid-West/West Coast Late Model Divisions and Holley expects more sanctioning bodies to approve them soon.

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