ported or manifold vacuum hei sorted by
relevance

Admin13.06.2021

Ported vs. Manifold Vacuum

It's THE reason Chrysler and then Ford went with ported in the late 30's.
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Admin09.07.2021

Manifold vaccume or ported?

When you are setting base timing, the engine is going to run rough until you hook up the vacuum advance, which is normal and fine.
1004
Admin21.06.2021

Ported vs manifold vacuum advance

.
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Admin02.07.2021

Ported vs. Manifold Vacuum

Your first sentence says" The vacuum advance will advance the timing when the engine is at idle or more importantly when the engine is running " This would happen with manifold vac, not ported vac right? IMO if you want that much timing at idle, lock the distributor out and set your Total Timing as your Base Timing and forget about it.
Admin27.06.2021

Manifold vaccume or ported?

All timing in at 2000 rpm is a pretty aggressive curve.
Admin07.09.2021

Ported vacuum vs. full manifold vacuum

As you know when setting timing on a pre emission engine the vacuum line is always disconnected to the vacuum advance.
7010
Admin17.06.2021

Timed Vacuum Port vs Full Vacuum Port

Once you get away from stock and start fooling with stuff the vac advance drops off quick.
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Admin10.06.2021

Technical

And, yes, these might also be a bit different between manifold and ported vacuum to achieve optimum.
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Admin01.07.2021

Timed Vacuum Port vs Full Vacuum Port

The key is to install the right vac advance can which pulls completely at idle.
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Admin14.07.2021

Timed Vacuum Port vs Full Vacuum Port

Non-Emissions Hot Rods and Street Muscle Cars Pre-emissions use Constant.
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