Today we are looking at the differences between the standard straight leg booster that you see in the basic holley carburetors and the more modern down leg boosters with the even more modern annular boosters. Straight leg boosters work and have have worked for over half a century, there are no real downfalls of the straight leg booster. The downleg booster is just an updated version of the straight leg. The down leg booster moves the fuel outlet much lower in the venturi, allowing the signal to the carburetor to be much better and respond faster. The newest booster design is the annular booster. Despite its size, it seems to be the preferred booster for high performance applications but the main draw back of the annular booster would be its size that limits airflow and its cost. In this video I will be going through all of this so sit back, relax and enjoy the show.

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