ZF5s out of power strokes shake and rattle at idle without the dual mass flywheel.
http://www.youtube.com/watch?v=Ww-AfB8_M4MThat is the above Zf5 out of a power stroke that originally had a dual mass here it is in my 86 single cab 6.9 with single mass fly wheel.
I had an 88 with a factory Zf5 single mass fly did not do that at all. Parted that truck out and swapped it into my other 86 and ran it till it ground 2nd and 3rd
http://www.youtube.com/watch?v=sG6vkstBFP8Bad example of a video lol but the 88 Zf5 did not do that hole stupid vibrate with clutch out in neutral thing.
My Zf5 storys dont end there..
What kind of issues have you had with the 4500?
I picked mine up for $500 rebuilt 5th gear issue fixed.
One thing about the 4500behind a cummins in a ford I dont like is the shifter is kind of far back
The zf5 shifter is in the same position as the t19 shifter would go.