There were no 20:1 Ford racks that I have heard of.
I'll post up some other thoughts on the thread Brad.
I upgraded the TRW rack in my '82 along with the pump a few years ago and never gave much thought about the type of Ford rack I got. I wouldn't think there would really be that noticeable of a performance difference. At least not what I would notice for my driving needs. I vaguely recall discussing performance handling but can't recall of that's what I got based on availability.
Based on the symptoms you gave at the beginning of the thread you talked about the slop or play in the first six inches or so. It's been recommended to check the mechanical parts but don't know if you checked the shaft etc.
Here's the page out of the Ford book. Just to rule out the obvious.
I was wondering if there was an issue with air trapped in the system from when you swapped it into the Zeph but I suppose you maybe didn't break any of the connections to introduce air. Here the basic method I'm going to be using soon below. There are other more elaborate pressure/flow tests but who these days wouldn't just replace before that step?
Note: these are out of the 1979 car manual and mention Type F Trans fluid which may or may not be correct for your application.
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