You change the motion ratio. If the shock is mounted directly in top of the axle the motion ratio is 1:1. If you mount it behind the axle it is higher than 1:1 and I don’t remember exactly how far behind the axle centerline the shock mount was so I’d be guess but it’s easy to measure.
My best guess from 1987 or so is the motion ratio was 1.15:1 with the shock behind the axle and .85:1 in front of the axle. I could be off a bit.
We weren’t trying to limit separation with the shocks. You do that with the IC height as best you can with a ladder bar. We were trying to lower shock speed because we didn’t have enough valving to do it.
