Using two stock light springs in distributor advance, good idea?

Garrett Ellison said

Once again, I must bow before the master of the board for saying exactly what I was thinking. As much as I would like to have access to a distributor machine, you can do the same exact thing with a timing light and a tach. A distributor machine will tell you your advance rates at what rpm and so on, but eventually you have to run the distributor to see if the baseline you establish is correct or needs fine tuning.

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You can, but its way faster and easier on a machine. My friend had one.

OP, as long as full advance is in by convertor lockup...you're good....and hell, none here can tell you EXACTLY what curve you need and the rate of which it falls in.

I have friends that would remove the one stiff spring all together and only run the one factory soft spring to get 18 at idle and 35 full advance. Some run the mr.gasket one spring others both.... both for drag, one for street is what I adhere to.