Maximum link length is the difference between 1 lobe up and 1 down, plus the angle between these points, so it's greater than the lobe itself.
The minimum link length is when both lobes are at equal height, and not too far from the inter-tappet distance.
The amount of slack in the link is partially based on the maximum lobe height, so if what you're trying to do has more lobe than the Olds model (Comp should be able to tell you) you need more slack.
