Not sure what linkage you mean... it drops in right from the top.

In any event, the shifter stub from my S5-47 starts with the '1317' prefix which is for the 47 model. Call up Midwest and ask for Adam, good dude. I am buying all my internals there for my build. If there is a major difference, they will tell you. I know that upper rubber boot deal for it is different. The plastic bushings are the same. May as well get their short throw shifter while it is apart.

If you do not tow a ton, I would not worry about the input torque ratings nor the gearing difference.

 

 

I would keep the 4.10:1 gear set, 35s are heavy. You have to include the rotational mass, not just the tire height. I went from stock 275/65R20s on my old 6.4 PSD to true 35s, big difference in getting the thing moving. It had compounds, obviously, and with a VGT for the high pressure turbo. 7.3s have neither of these. It was equipped with stock aluminum wheels and 3.73:1 gears. Went back to stock, economy went back up. If I had more gear it would have been acceptable.

With that setup you would go from roughly 2122rpm to 1837rpm at 70mph, all else equal. Hope it helps.

My shifter stub is out if you need pictures to compare to yours. PM me and I will send you a photo.

 

Related re-gearing question: Are you limited how many times you can adjust your speedometer for tire size with software? Can you adjust your tire size with software on these trucks? I have read about doing it with the odometer ***** and you are limited to six changes, I think. I was thinking about the Ford IDS or Forscan software.

 

I don't know for sure but I have read the 6 times thing before so I'm pretty sure you are limited to that. Don't know about software adjusting tire size. I think the odometers have their own built in computer so any chip plugged into the PCM won't affect the speedometer output. I could be wrong there though.

 

That makes sense. Later vehicles have a bus. That might be when we get interconnection between modules? I'll look into this some more when I think about it.

Link to some PSOM tire size info:

https://www.supermotors.net/registry/media/646264_1

 

Forgot to thank you for the offer of a pic. I got the truck back today from the shop. They called me last last week saying it was all buttoned up with the rebuilt 47, South Bend 1944-5OK_HD (heaviest duty organic/organic single disc clutch they make), incl solid flywheel). I'm being pretty easy on the clutch, the SBC manual says to drive in stop and go type traffic for 300-400 miles. Pedal effort is a little bit more than stock, but I wouldn't call it heavy by any means. I definitely like the deeper 1st and R already. Much less clutch slipping needed. I am hearing a bit of a noise that goes away if my foot is on the clutch pedal (very lightly just resting). I have read and been warned about the extra noise a solid flywheel with a diesel can make, but I'm wondering if this is normal. Is this the gear rollover I read about? My 89 LX 5.0 makes a squeaky noise when the clutch pedal out that also goes away when my foot is resting on it. From what I've read, it's the throwout bearing.

The shifter and stub shaft from my 42 seems fine fine. The shop said it was good to go on phone last week. It's been so long since I could drive the truck at all without really having to be slow and gentle shifting from 1 to 2, 2 to 3, and into R. The throws seem a little bit long, but that could be because I drove my My 89 LX's T-5 yesterday for 600 miles.

I'm kinda interested in the Midwest short throw kit now. Just in case mine isn't quite right. Their website says you can install it with the trans in the truck so it's not too late to try it

 

Midnight Mods: MidWest Trans Short Throw Shifter Kit Install for ZF5

Not my site. I am shipping off my shifter stub this morning, I will shoot pics to you or just stay on the look out for my ZF build thread to happen. It sorta is in that 'ZF removal tips' one I have going. I think it was about $200, no idea on freight since I am having a ton of internal parts ship back with it for my rebuild.

IMO, do it. Everyone I asked say they love it. Plus you can service the trans again while in there... yes it is fresh. But there is always some crap in the fluid on any fresh build. Dump a gallon of Redline D4 in there and snick-snick it up.

 

That's an awesome link with tons of great pics and detailed install instructions. Thanks for posting that!