Reply to "CBPerformance Black Box"

dlearl476

When I was looking at dizzy options, someone (John at AC?? Ed, the distributor guy??) told me that a single port on dual downdraft carbs didn't produce enough vacuum to properly run a vacuum advance distributor. Running my 4 gauge manometer off the vacuum ports on my Dellortos would tend to corroborate that (they won't. The vacuum generated is so low it can't indicate anything but the most rudimentary sync)

Running off the T might, I don't know. IIRC, OEM SVDA carbs take vacuum off the insulator plate between the carb and the manifold, drawing vacuum from all 4 cylinders.

In the end, I bought a German 009 that Ed rebuilt for me instead.

4/6/211:23 PM

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