Mallory dual point distributor

[farmer_fred]

A friend gave me a Mallory dual point distributor and I wonder what it's designed for. It def fits L-series 4-cyl but appears to have no vacuum or mechanical advance?

Any info would be appreciated.

TIA

[defdes]

Those things usually have interchangeable springs underneath the plate under the rotor to adjust the advance, no?

[loungin112]

I'm not sure about the interchangeable springs, but mine adjusts the timing with the inside plate. Mine is not a dual point though. I contacted Mallory a few years back and they noted there is a kit available to go to optical points. Mine is wired through an MSD box.

[farmer_fred]

I double checked and with a couple shots of 6 in 1, the mechanical advance freed up. So there is a mechanical advance (springs and bob weights) under the points plate.