Where is the best place to get a vacuum reading? I tried the vacuum port
(dist advance) on the rear SU (HS4). I get around 5lbs at idle and up to
about 15 when rev'ed. What numbers should I expect.
I want to try a reading at the manifold. Does it matter which port I attach
to? There are about four of them.
I vaguely remember someone talking about how they tune their engine based on
the timing that gives the most vacuum. Is that a good approach to take?
BTW, I have a reground cam from Northwest and the valve gaps are set at .28.
Would this affect the vacuum reading vs a stock cam?
Dereck
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