Vacuum testing questions, stock 21 stud

[Old Henry]

Originally Posted by Henryat1140

My opinion (not based on scientific evidence) is that the typical flathead as we use them could stand more advance. The fuels are better and the roads are better. Getting the engine to run at the proper advance point also helps it to run more efficiently and thus cooler.

Henry

What you say is especially true at higher elevations. At 5,000 feet where I live I run full static advance on the distributor and full vacuum advance and get more power and runs better. No pinging.