All Small Six How Much Ported Vacuum from SCV Carburetor

[Alkraut]

Can anyone tell me how much ported vacuum is produced by the Autolite 1100 SCV carb and also the Ford replacement Holley 1940 ( DOPK F Motorcraft) SCV one barrel carbs? This would be for a 1966 200 six.
I know there is none at idle but comes on and increases when throttle is opened to provide vacuum to the Load O Matic distributor.
Thanks

 

[wsa111]

No i can't give you a number.
To improve performance scrap the load amatic & get my DS11 distributor. The SCV carb can be converted to ported vacuum.
All depends on your wallet??

 

[PSIG]

That's not "ported" vacuum in the conventional sense, and specific to the Load-O-Matic combination of manifold and venturi vacuums. I'd grab a Ford Shop Manual for your year to find some spec's.

 

[B RON CO]

Hi, the SCV does not work in the conventional ported vacuum way. If you want to find out what it is doing you can hook up your vacuum gauge and find out. Good luck

 

[powerband]

'hook up your vacuum gauge and find out. Good luck'
.
that would be excellent factual addition to illustrations and accepted theories. Engine condition will ultimately determine vacuum / SCV action at measured port under varying load, - could hookup (on dash) vac gauge to SCV port, then drive and observe ... ( - just a SCV carb ? - 'like to try that )
.

 

[78_200_C4]

Can anyone tell me how much ported vacuum is produced by the Autolite 1100 SCV carb and also the Ford replacement Holley 1940 ( DOPK F Motorcraft) SCV one barrel carbs? This would be for a 1966 200 six.
I know there is none at idle but comes on and increases when throttle is opened to provide vacuum to the Load O Matic distributor.
Thanks

Both the LOM Autolite 1100 and the LOM Holley that I have provided vacuum to the vacuum advance at idle.
Both carbs do not have ported vacuum even after performing the Drop'A'Load modifications on them.
I had to drill a higher ported vacuum port on both carbs to not have vacuum advance at idle.
LOM carbs to not have ported vacuum.