383/440 2BBL CARB CFM

[FLY 9999]

Do they flow the same or are there other combos that are bigger. Need the highest/ biggest 2 bbl factory appearing. Thanks

 

[turbine68rt]

Never saw a 2bbl on a passenger car 440. The exception may be an industrial application.

 

[Geoff 2]

383 were available with 2 bbl. Never heard of 413-440 having a 2 bbl.
The later 383 & low performance 440s had a 625 cfm Carter AVS. Performance 440s had a 750 cfm AVS. Both excellent carbs.

 

[GTX JOHN]

The CFM is measured on a different inches on a two barrel than a four barrel.
In 1959 you could get a high deck 383 and that manifold would fit on a 413/440
but I do not know why you would care to do so. a 500 or 600 CFM two barrel.
would not flow near as much as a 500 or 600 four barrel.
My guess is about 1/3 less actual flow on a four barrel bench.
Some engineering types could tell you precisely.

 

[Photon440]

The conversion factor is 1.414. Which means that the 1350 cfm. for a six-barrel 440 would flow 954 cfm. if it was measured the same way, as if it was a four barrel.

This page shows various 2bbl Carters that Chrysler used over the years, none of them go over 365 cfm. or, about the same as a 260 cfm 4bbl. The 383 and 400 engines used the 365 version. Also, the 1971 360 used a 350 cfm Holley.
Carter BBD Specifications - Mikes Carburetor Parts

The famous Holley 4412 had 350, 500 and 600 versions, but they wouldn't look stock, or bolt without an adaptor to your engine. I believe there was a one year Rochester 2CG used on the 318, I don't know the size but they were available up to a 435 cfm., look for a 1.686" throttle plate and 1.375" venturi.

 

[lemondana]

I have 2 440 Industrial irrigation motors that have 2 bbl intakes, although they both ran on propane.

 

[FLY 9999]

This is what I need. Thanks to all.