Tech info wanted; Lean Burn Dist

I am having a hard time getting information about the timing of the two pickups in the Lean Burn distributors osed by Mopar in the late '70s. One of those pickups was retarded with regard to the location of the other. I just need to know how much.

There is probably something like 4, 5 or 6 degrees of retard built into this distributor, but it's so old, nobody has any info on it. It was retarded for starting.

Does anybody have the factory specs for the magnetic pickup offset in these slant six distrinutors (crank degrees,)???

Thanks for any information!:cheers: