In this picture you can see I'm pulling vacuum from cylinders 1 & 4, as well as cylinders 5 & 8 on the left side, (not visable).
This only just supplies enough vacuum for the brakes, it's the absolute minimum.
I find it difficult to imagine Halls system supplies enough vacuum from just one cylinder.
I tried that & it was hardly noticable, no brakes at all.
Maybe Halls setup may work with a stock cam?
regards,
Tony.
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