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It should be 35 degrees total. IF it isn't fully advanced by 2000, run it up to see where it is all in. I wouldn't think it will be much faster than that.
Let's don't think; let's read the Shop Manual. From 2,000 to 4,000 RPMs, where it tops out, depending on the model, there will be another 10* of centrifugal advance.
Given that, one might want to see 25* total advance at 2,000, but certainly not 35*. Naturally, that's without any vacuum advance.
At a 2,000 RPM cruise, the vacuum advance will be providing from 16* to 22* of vacuum advance. So 25* initial and centrifugal, plus say 20* vacuum will be 42* total. This is only tolerable under a light load. When the throttle is opened for acceleration or hill climbing, vacuum drops and centrifugal kicks in, giving 35* total at 4,000 RPM WOT.
jack vines
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