Carburetor cfm calculator

Bewy said

Unfortunately, some of the anecdotes [ went 2/10ths quicker with a bigger carb ] are misleading people into thinking that more cfm must be better. Using that logic, a tunnel ram with twin carbs has got to beat a single 4 bbl every time....which it doesn't it.
None of the examples given in this thread of 'bigger is better' have been conducted in a controlled test environment. Other factors to consider other than just the cfm rating.

Click to expand...

Really what other better test do you need than on a drag strip with back to back runs within an hour of each other. So this is not misleading at all, these were actual experiences on track not some controlled test (what like a dyno?) which is no way more reliable than real life track situations.
We are obviously talking about performance here as I mentioned previously, its rather obvious not a stock street car that will rarely or never see 6k+ rpm. As it happens I was still using my 850DP with a 50cc front pump on the 340 for street driving at that time and there was a noticeable improvement even at the stall speed of 3500 rpm but I didn't have 2.76 gears a .420" lift cam with a 600cfm carb, stock manifolds and converter. And if you can tune twins and have the right combo they WILL outperform a single in most cases, probably by another 2 10ths.