Conversion Question
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Conversion Question
Ok im totally fed up with the e4od in my 90, its got electrical problems i cant hunt down, anyways all my previous ford have had manual transmissions in them, this one is going to be the next
,so obvisously im better off trying to find a donor truck, should i try to find the borg warner t19 from a 6.9, or go with the zf5 5 speed, im running 3.55s in the rear, also if i find a complete donor truck thats four wheel drive how hard would it be to change that over too, or should i just leave it 2wd, im not too worried about having four wheel since my nissan titan is, but what ive seen with these old idi's and 4x4 they go thru any snow that mother nature can dump, i did find a swap on ebay, comes with the transmission, shifter, flywheel, clutch, slave cylinder, master cylinder, and fork, he was missing the crossmember, pedals and driveshaft, im curious too about the driveshaft due to my truck being 2wd if its necessary to swap that too
,so obvisously im better off trying to find a donor truck, should i try to find the borg warner t19 from a 6.9, or go with the zf5 5 speed, im running 3.55s in the rear, also if i find a complete donor truck thats four wheel drive how hard would it be to change that over too, or should i just leave it 2wd, im not too worried about having four wheel since my nissan titan is, but what ive seen with these old idi's and 4x4 they go thru any snow that mother nature can dump, i did find a swap on ebay, comes with the transmission, shifter, flywheel, clutch, slave cylinder, master cylinder, and fork, he was missing the crossmember, pedals and driveshaft, im curious too about the driveshaft due to my truck being 2wd if its necessary to swap that too
Post Fiend
Joined: Feb 2009
Posts: 8,005
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From: Ottawa, Ontario
It's a pretty big job converting to 4wd with the front end being leaf sprung. It is possible however, but be much easier, and cost efficient to just find a 4wd truck and drive that.
If you don't really need it, don't bother, it's just more maintenance.
I'd go with the ZF5 5 speed, as it has OD, and plus with 3.55's will get your awesome mpg's! T19 with 3.55 is pretty decent to, as long as you keep it under 65.
You will need to mod your currant driveshaft, or find one to fit as non of these transmissions are the same length.
Pedal assembly is pretty easy to find, you will need one from an 87-91 truck only to fit your '90 though. F150-F450 all the same.
Will also be a good idea to get a firewall re-enforcement plate for the clutch pedal so the firewall doesn't crack, and give you headaches later on.
Heres my write up on it, and theres a link in my post at the bottom to purchase that plate.
https://www.ford-trucks.com/forums/1...l#post10694047
If you don't really need it, don't bother, it's just more maintenance.
I'd go with the ZF5 5 speed, as it has OD, and plus with 3.55's will get your awesome mpg's! T19 with 3.55 is pretty decent to, as long as you keep it under 65.
You will need to mod your currant driveshaft, or find one to fit as non of these transmissions are the same length.
Pedal assembly is pretty easy to find, you will need one from an 87-91 truck only to fit your '90 though. F150-F450 all the same.
Will also be a good idea to get a firewall re-enforcement plate for the clutch pedal so the firewall doesn't crack, and give you headaches later on.
Heres my write up on it, and theres a link in my post at the bottom to purchase that plate.
https://www.ford-trucks.com/forums/1...l#post10694047
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cool thanks for the info, if i cant find any at the scrap yards should i hit up ebay or is there another place online that could help with the driveshaft issue
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Fleet Owner
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From: Mi'kma'ki
can you describe the issue some?
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Post Fiend
Joined: Nov 2004
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From: Manitoba
If you replaced the rear tire size and did not change the conversion constant on the speedo then the trans will not work correctly.
Do some searching for E4OD/speedo conversion
E4OD and 35" tires [Archive] - Pirate4x4.Com
Do some searching for E4OD/speedo conversion
E4OD and 35" tires [Archive] - Pirate4x4.Com
Logistics Pro
Joined: Apr 2005
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If you get a doner truck then just use the driveshaft off of it. 
Someone correct me if I'm wrong, but I'm pretty sure you'll need a 2WD doner as the thramsmissions in the 4WD are specific to the 4WD because of the mounting of the transfer case.
Always a smart move to ditch the E4OD.
Someone correct me if I'm wrong, but I'm pretty sure you'll need a 2WD doner as the thramsmissions in the 4WD are specific to the 4WD because of the mounting of the transfer case.
Always a smart move to ditch the E4OD.
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heres my issue with the e4od thats in the truck, the overdrive light is flashing, go to pull codes with the snap on tool, nothing, either koer and koeo. So i got the light to flash and hooked the tool to it while it was flashing, again samething no codes, so i went ahead and replaced MLP, i switched the pins into the new connector that came with it, now the truck doesnt start in park, i adjusted the switch every which way i can and nothing, the truck will start in neutral but not park, also after i got the truck started i drove it, now the transmission is shifting a lot firmer but not as harsh as when the overdrive light is flashing.
im just fed up with the e4od, bad part is i have the 1st year of it
im ready to change it over to the zf5 and be done with the electronics
i did find on ebay a guy selling a trans from a 2wd, flywheel, slave cylinder, master cylinder, shifter and clutch assembly for $900 as a buy it now, my 88 f150 was in a accident the day after thanksgiving and was totalled so i have my clutch pedals, im basically short the driveshaft, and crossmember
im just fed up with the e4od, bad part is i have the 1st year of it
im ready to change it over to the zf5 and be done with the electronics
i did find on ebay a guy selling a trans from a 2wd, flywheel, slave cylinder, master cylinder, shifter and clutch assembly for $900 as a buy it now, my 88 f150 was in a accident the day after thanksgiving and was totalled so i have my clutch pedals, im basically short the driveshaft, and crossmember
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the snap on scanner wont pick up trans codes? when i pined the mlp i did it one wire at a time, but thats easy enough to double check i have a 91 f250 with a 460 and a e4od so i can double check myself on that part
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Just a quick update, for g.p i called ford today about the MLP, aparantly they do offer one but with just connector, not the pigtail with it, so this weekend im gonna crawl under my buddies 91 f250 with the same trans to verify that i correctly pinned mine
with replacing the MLP with a new one should the line pressure be increased by the computer? reason i ask is because after i replaced it i did drive the truck after i started it and the trans did shift a lot firmer, i didnt think that MLP did all that in this old of a truck
with replacing the MLP with a new one should the line pressure be increased by the computer? reason i ask is because after i replaced it i did drive the truck after i started it and the trans did shift a lot firmer, i didnt think that MLP did all that in this old of a truck
Fleet Owner
Joined: Jul 2006
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From: Mi'kma'ki
the line pressure was instantly increased after replacing,most likely because you incorrectly pinned the updated plug and sent the trans into limp mode.
this will help you too:
http://www.fullsizebronco.com/forum/...d.php?t=191742
this will help you too:
http://www.fullsizebronco.com/forum/...d.php?t=191742