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19 Ιαν 2021 · The rulebook made a desirable combo out of a small displacement big block Mopar and a torque arm suspended F-body. He ran a 4th gen F-body with a 383 Mopar and the carb sat so far under the factory firewall that he had to mount the carb sideways just to get to the rear float bowl.
14 Απρ 2021 · Holley's Ultra XP 4150 is more than just a regular four-barrel. It's a very trick carburetor that is designed for the racers and the hardcore gearheads. With well-engineered design details and several features that have been asked for, the Ultra XP is a solid option for your air/fuel delivery needs.
5 Νοε 2018 · On a single carb motor I have always divided engine vacuum at idle by 2 then added .5 to select power valve, (read it somewhere long ago) and works for me. Example would be 12 at idle divided by 2 = 6 then plus .5 would = a 6.5 power valve. Are there 8.5 power valves in both carbs?
28 Μαΐ 2019 · All of Holley’s models are rated in cubic feet per minute (cfm) with the smallest four-barrel rated at 390 cfm and ending with the Dominator line of racing carbs that now extends to 1,475 cfm. These sizes range through multiple configurations and options.
15 Απρ 2022 · Luckily, several companies offer a simple conversion that will work with any 4160 or 4150 Holley carburetor equipped with an electric choke.
7 Φεβ 2014 · The Double-Pumper. Assuming you've got spot-on tuning, a carb with vacuum secondaries is easier to live with on a street car or one that sees only limited duty on the dragstrip. That's because...
21 Φεβ 2019 · So a 390 4 barrel needs to reach 1.5 inches of manifold vacuum before the carb is flowing 390 cfm. You leave power on the table if the carb produces restriction like that. A 390 4 barrel is initially smaller than a 300 2 barrel, and should give better all round throttle response and power.