[blykins]

Just wondering what formula everyone is using to spec carb sizes.

The two popular ones that I've found are:

1. (CID*RPM*VE)/3456

2. (CID*RPM*VE)/2820

Using my specs, I get two sizes.....

1. (420*6800*.9)/3456 = 743cfm

2. (420*6800*.9)/2820 = 911cfm

Now, I'm staring down two carb sizes that are pretty far apart....

Is a 750 too small? Is a 950 too big?

I need to pull the trigger on a carb for my new FE that's going in my Cobra.

I ordered my Victor FE intake with a Dominator flange....that way I could use a Dominator carb or use an adapter and a regular 4150 carb.....

Let's hear the ideas.