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T19 to ZF5 1986 F250
Yeah, mine has around 328K so I feel your pain on the miles wearing things down. Pulling that 7.3 IDI F250 for my buddy with a not so light trailer and too many spare parts in the bed wasn't the easiest for it. I was able to stay in 4th for most of the hills but the longer ones I kept losing...- the86s
- Post #27
- Forum: 6.9L IH & 7.3L IDI Diesels
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T19 to ZF5 1986 F250
That was the intent with keeping the 4.10s. Not trying to squeeze all the mpgs out anyway and it definitely tows and handles hills better this way. Super handy to get into OD at lower rpms in the city too. Way easier to match traffic speed on the highway, basically drives like an auto above...- the86s
- Post #25
- Forum: 6.9L IH & 7.3L IDI Diesels
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T19 to ZF5 1986 F250
Yeah, I have noticed the same thing. Luckily, it's pretty easy to notice if its fully engaged or not. I'm sure if I park it for a bit and come back I'd get complacent and forget. One thing that helps is my 4 speed was getting real hard to find reverse with so I had to do the same trick with that...- the86s
- Post #23
- Forum: 6.9L IH & 7.3L IDI Diesels
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T19 to ZF5 1986 F250
Truck is much improved for the highway compared to the 4 spd. Old thing keeps up with traffic much better now. Although I haven't got a good trip in to run both tanks down and get a solid average, I noticed an immediate difference if fuel economy. If I was able to stick to just highway miles...- the86s
- Post #20
- Forum: 6.9L IH & 7.3L IDI Diesels
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T19 to ZF5 1986 F250
Update on the swap, I was able to get it all put together after a few tough cross member bolts and about a day spent on getting the hydraulics for the clutch working. I was really happy with the perfection kit I bought from Rockauto, went together super smooth. I ended up using the cross member...- the86s
- Post #18
- Forum: 6.9L IH & 7.3L IDI Diesels
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6.9 zf5 swap
I ordered a smf conversion kit from rock auto, swapping a zf5 from an 88 7.3 idi into my 86 f250 with the 6.9. That kit is listed under the 88 7.3 truck on rock auto. I'll be pulling the trans from the donor truck this weekend and swapping into my truck next week. I will add an update to my...- the86s
- Post #14
- Forum: 6.9L IH & 7.3L IDI Diesels
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T19 to ZF5 1986 F250
Thanks for the help guys, looks like I will be getting a conversion kit. Not necessarily a bad thing since I am sure the flywheels in both trucks are not in the best shape anyway. Thinking about trying the Perfection clutch (part no: MU19891SK) from rockauto given the price is very competitive...- the86s
- Post #10
- Forum: 6.9L IH & 7.3L IDI Diesels
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T19 to ZF5 1986 F250
That would actually be super helpful, the donor truck I have access to is also a c&c truck so whatever you did would likely be the same thing I need to do. Both trucks have clutch slave and master that look to be in good shape so I'm sure I could get something to work. Do you remember how you...- the86s
- Post #3
- Forum: 6.9L IH & 7.3L IDI Diesels
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T19 to ZF5 1986 F250
I have been reading up on doing a zf5 swap in my 1986 F250 6.9 IDI 2wd. Has the T19 and I can feel the clutch is getting a little tired so i figured if I have the trans out I may as well do a swap and get overdrive since I do a lot of highway miles. I was also able to find a good deal on a 2wd...- the86s
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- Replies: 27
- Forum: 6.9L IH & 7.3L IDI Diesels
