pcard

I asked Crane Cams if they had an advance curve diagramme for their product. They do not have one but they gave me this information:

Zero turns: 2 degrees @ 4” vacuum to 27 degrees @ 10 “ vacuum.
2 turns 2degrees @ 5” vacuum to 27 degrees @ 13” vacuum
4 turns 2 degrees @ 6” vacuum to 27 degrees @ 14” vacuum
6 turns 2 degrees @ 7” vacuum to 27 degrees @ 16” vacuum
8 turns 2 degrees @ 8” vacuum to 27 degrees @ 17” vacuum
10 turns 2 degrees @ 9” vacuum to 25 degrees @ 18” vacuum
Timing measurements are in crank degrees

The Accel Adjustable Vacuum Advance unit instructions does have a curve. It can be downloaded from:
http://www.jegs.com/InstallationInst.../110-31035.pdf

Here is a great discussion on vacuum advance units:
http://www.jegs.com/InstallationInstructions/100/110/110-31035.pdf

The OEM vacuum advance unit for a 1970 455 A body has the following specs (in crank degrees) (taken from the 1970 Service Manual):
Start - 0 degress at 0 - 10/13" vacuum
8.4 - 14.6 degrees at 13-16" vacuum
14.4 - 25.6 degrees at 16-25" vacuum

Does anyone know the specs for the reproduction advance units sold by INLINE tube?
I am going to call Dan Jensen at 517-647-2474 to find out more.

Hope this is of interest.
Peter