2v carb "whats the cfm"

[joe's69 10]

i was wondering what the cfm is on a ford 2v car from a 69-70 mustang with a 302 and also is a 351 2v carb bigger..

[70vert 17]

I think that's the Autolite 2100. It's what I had on my original '70 302. Not sure why you're asking, but the basic answer is "slim to none". ;) With that carb and the restrictive exhaust ports, and stock exhaust manifold, you've got that 302 in a chokehold and constipated to boot. It's a great carb for mpg and reliability, but for performance it's not much use.

 

Why do you ask?

[foothilltom 33]

If it's an Autolite 2100, you need to look at the numbers stamped on the venturi and cross-ref using the ID=CFM values below:

 

.98=190

1.01=240

1.02=245

1.08=287

1.14=300

1.21=351

1.23=356

1.33=424

 

The 2100 is an awesomely reliable carb, but woefully small if you're looking for any performance.

[joe's69 10]

i'll have to get the #'s off of all mine, i was hoping they were about 350 or so.. i am putting one on my car becouse i got all the stuff from a 2v car and no spare 4v stuff. but in the future i wanna switch to a 4v setup with gt40p heads...

[joe's69 10]

just ran to the garage and checked, i got a few 1.08's and one realy clean 1.23.. wish i had a 1.33, what car or engine is a 1.33 one from the factory.. incase i know where i can get one. thanks for your help guys.

[69RavenConv 286]

1.33 would be a big block, like a 390.

[joe's69 10]

thats what i thought, thanks..