RayJE Carburetors wrote:annular boosters in a 4150 body kill the flow of the carb... even with a 1.57 venturi the 900 thou outside and 550 inside diameter annular booster kills flow..... for 650+ HP out of a 421 ci small block a 1000HP body with downlegs will make the most power.
richyrich wrote:I was wondering the same thing. From what I have read in almost all magazines and websites, the annular boosters always come out on top. But most racers still prefer the downleg design right? Is it true the the annular booster only helps with the fuel atomization and simply kills the flow?