I'd be inclined to run some thicker/better oil in the ZF5. Maybe overfill thru the shifter opening (like us dodge getrag guys have to.) I forget what i ended up with in mine (nearly 15 years ago now). I know i was looking at redline MTL kind of stuff, maybe the royal purple? Rollover noise...
I did SMF on my powerstroke (also ZF5-s42) and never noticed a growl. The DMF was making a racket and didnt want to risk it letting go, possibly shattering the trans.
I'd want that bigger clutch lining. DMF is only 11" on the idi.
I reckon 'Perfection' amounts to a rockauto house brand; reboxed clutch made by somebody else. Compare pictures with other brands.
The Perfection clutch I got for my cummins dodge was a replica of the OE Sachs 13" used on the 89-93 dodges - only devoid of the 'Sachs' raised lettering.
Edit...
The old small inner bearing/journal did get phased out. The Dana 61 from the 80's-on and 60 from
mid-90's-on use the traditional dana 70 spindle which stacks up better.
The switch gets to be a problem when the pedal linkage is worn out.
I nearly had my leg pinched off between two trucks 25 years ago because a friend had disabled the interlock and it started in gear. I'll keep the safety switch thanks.
My understanding of the f250 4x4 dentsides is the 77-older have narrow frames (34") and ~40" perch spacing. (Aka 'highboys')
77.5+ have 38" frames and ~45" perches.
Mine leaked the same way. Ordered up an "engine tech" gasket set from rockauto, and got new head bolts from fastenal.
Lo and behold.... when I dont drive 75mph for hours at a time, the gasket doesn't leak. 2-3 years have gone by and i havent changed it.
The f250 4x4 doesnt have a solid axle. Its the twin-traction beam. Shorter beams than a 2wd.
The 2wd beam setup is similar for 150/250/350.
Another way to go is a body lift, and achieve your ground clearance with bigger tires.
I can always get at ujoint strap bolts with a socket and wobble extension. Might have to clock the shaft around for better angle though.
The straps and bolts can be bought at rockauto or wherever you buy ujoints.
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