Carter AVS CFM ratings ?

[rustytoolss]

Does anyone have a list of the carter AVS CFM ratings that would have the carb numbers, along with the primary sizes & secondary sizes ?

 

[67Dart273]

Something to keep in mind about "numbers." I believe Holley published numbers "dry" and Carter published "wet" which means that a "given number" between the two brands means that Carters acually flow more than Holley

Also, remember that even Holley is not consistent. Holley 2bbl carbs are rated at (I forget) I think 3" Hg vacuum, 4 bbls at 1.5 Hg. This means the (in) famous Holley 500cfm 2bbls "aren't" 500 cfm, that is. More like 350 compared to a 4 bbl.

 

[rustytoolss]

Something to keep in mind about "numbers." I believe Holley published numbers "dry" and Carter published "wet" which means that a "given number" between the two brands means that Carters acually flow more than Holley

Also, remember that even Holley is not consistent. Holley 2bbl carbs are rated at (I forget) I think 3" Hg vacuum, 4 bbls at 1.5 Hg. This means the (in) famous Holley 500cfm 2bbls "aren't" 500 cfm, that is. More like 350 compared to a 4 bbl.

OK, lets try this a different way. What would be the smallest AVS ? Would it have been on a 340/ or a 383 ???
Or for that matter what about the smallest AFB. probably on a 273 ???

 

[69 Cuda 440]

Carter AVS

First installed on the 1968 Mopars

CFM Rating--------Primary - Secondary ----- Venturi --------Primary Jet - Secondary Jet --------Engine

625 CFM ............... 1.563" x 1686" ........... 1.186" x AV......... .089" ........ .095" ................. 340 {1968 thru 1970}

625 CFM ............... 1.563" x 1686"............1.186" x AV ......... .089" ........ . 092" ................ 383 {1968 thru 1971}

750 CFM ............... 1.686" x 1686" ........... 1.437" x AV......... .101" ......... .095" .................440 {1968 thru 1971}

 

[67Dart273]

OK, lets try this a different way. What would be the smallest AVS ? Would it have been on a 340/ or a 383 ???
Or for that matter what about the smallest AFB. probably on a 273 ???

There were only "so many" AVS's. Smallest engine (68?) they were used on is a 340 and generally, in 71, Ma switched to Thermoquads

The 273 AFBs, as well as the earlier engines in general, even the 426s, were a competely different carb. The mounts were different and the air horns were smaller diameter. That is, earlier 4bbl air filters won't interchange.

 

[69 Cuda 440]

Carter AVS

First installed on the 1968 Mopars

CFM Rating--------Primary - Secondary ----- Venturi --------Primary Jet - Secondary Jet --------Engine

625 CFM ............... 1.563" x 1686" ........... 1.186" x AV......... .089" ........ .095" ................. 340 {1968 thru 1970}

625 CFM ............... 1.563" x 1686"............1.186" x AV ......... .089" ........ . 092" ................ 383 {1968 thru 1971}

750 CFM ............... 1.686" x 1686" ........... 1.437" x AV......... .101" ......... .095" .................440 {1968 thru 1971}

The above specifications are for both Manual and Automatic Transmission cars, except for the 340 Automatic.

Note; The Secondary Jet size for the 340 Carter AVS 'Automatic Transmission' cars was .098".

That is why they ran so well.