Re: Actual cfm used vs carb size
Posted: Tue Apr 02, 2019 11:36 pm
You are limited by the performanve of the venturii of the carb yu are using. 4 big or bigger venturi in the case of a single big holley racing carb. You are limited by its design
And come to a point whrre just making the 4 venturii bigger just does not work.
So use more (8) smaller DIFFRRENT DESIGN carb(s) venturii. Now it is different. Generally more veturii are just better(er) than 4.
You are doing it differently now and has the potential to perform better. Now you can do a better quality job that carburation does. And use more airin and out too.
Multi carbs have a advantage. Thats why rules based class racing separate single carb cars from multi carb cars, or flat out ban the multi carb cars from competing eith the single carbed cars. There is a advantage and they know it well. Thats why the fasted unlimited race classes are dominated by v8's with multi catb setups. Both N/A and supercharged.
Single 4 bbl carb thinking will limit you. Especially on a V8 engine.
And come to a point whrre just making the 4 venturii bigger just does not work.
So use more (8) smaller DIFFRRENT DESIGN carb(s) venturii. Now it is different. Generally more veturii are just better(er) than 4.
You are doing it differently now and has the potential to perform better. Now you can do a better quality job that carburation does. And use more airin and out too.
Multi carbs have a advantage. Thats why rules based class racing separate single carb cars from multi carb cars, or flat out ban the multi carb cars from competing eith the single carbed cars. There is a advantage and they know it well. Thats why the fasted unlimited race classes are dominated by v8's with multi catb setups. Both N/A and supercharged.
Single 4 bbl carb thinking will limit you. Especially on a V8 engine.