Will Delco-Remy centrifugal advance springs work in a MP distributor?

yellow rose said

The other option (which is near impossible unless you get some custom springs or make something work) is to open the mechanical advance all they way up, set the initial to 20 and get enough spring on it that it advances all the way to max RPM. Set the total at as close to peak torque as you can and send it. But you have to keep an eye on the plugs and make sure you don’t run into detonation. This is the correct way to do it, especially if you have an ignition system that retards with RPM, and most do.

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This is more or less what I did on my big-block with a lot of cam. One super-light spring, one heavy spring with loop. Cranks at about 16 degrees, but as soon as it fires, goes to 27 degrees (the super-light spring stretches until the other pin hits the loop on the heavy one). Advance is gradual on the heavy spring thereafter.

I measured 35@4000 rpm and don't want to stand close to the engine revving it any higher. The 11/22 distributor tower I got from Hops will keep it from going over 38 mechanical under any circumstances (which as YR says, will be less due to ignition retard with RPM anyway).

Plus vacuum advance for street use (manifold vac, it doesn't advance at idle with only 8" vacuum and my QFT 950 doesn't have a nipple anyway). I think it's a max 18 degree can, don't remember but it's adjustable.