The Ultimate Guide to Holley Carburetors
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The classic Holley 4150 carb as a mechanical secondary is represented by this 750-cfm carb fitted with a choke housing (far left). The street HP (left) offers a bright finish and the contoured inlet, replaceable idle, and high-speed bleeds available on the standard HP (right) . The HP Ultra (far right) is easily identified by its black billet metering blocks and baseplate. View Related Article
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