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By cbass139 - 16 Years Ago
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I have a 58 f100 with a 292 in it that I want to put a OD behind. I love the three on the tree and want to keep it, so I have located three potential OD that might work. They are a unit out of a 55 f100, one out of a 63 f100, and a t86e-1. I dont know if any of you have any experience with this but was hoping somebody can point me in the right direction. I know that the trucks had a larger input shaft then the cars but seeing that these are out of trucks I think I am in the clear on that. If you need any other info let me know. Thanks in advance.
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By John Mummert - 16 Years Ago
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The 1955 and 63 units should be similar or the same. Either should work but the 55 will have 6 volt solenoids while the 63 is 12 volt. To work in your truck the trans must have the 1-3/8" input spline. The 1" and 1-1/16" car units have shorter input shafts that won't reach the pilot bearing or engage clutch splines correctly. The transmissions with tin top cover are weak as are the ones with square side cover. The best have a side cover that is curved at the bottom. I have seen one in a truck but most had the square side cover. NO POWER SHIFTS with the square side cover or tin cover units or you will be looking for another one.
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By cbass139 - 16 Years Ago
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Thanks so much John. I will try to get the 63 seeing that I have a 12 volt system.
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By crenwelge - 16 Years Ago
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All 3 are probably a version of the T86 and they are tougher than most people think. I bought my first one almost 50 years ago and the earlier ones took a lot of punishment. T89s are stronger, but harder to find. The only difference in a 6 or 12 volt is the solenoid. I have used governors interchangeably. You will also need a relay. They are on eBay all the time but none of them ever go real cheap. I have used a power seat relay from a Chrysler. The relay is actually like two relays. The heavy winding preforms the shift and then a lighter winding holds it in gear. You will also want a kick down shift or possibly a toggle switch to shift from OD to direct for more power.
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By ejstith - 16 Years Ago
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I expect the two 55's are about the same, probably T-86's. The T-89 is the truck version of a T-85 and like the previous post said, are tough as hell but relatively scarce. If you have a truck the input shaft may work. My T-89, that I'm attempting to put in a '56 Ford car has an input shaft that's 1/2" too long. My choices are to find a car input shaft that's 6" long or get it cut down. Measure the one you've got (if a T-89) and see if it's 6". If it is and you need a 6 1/2" I'll trade with you. Mine is a 10 spline. I've got 2 T-89's that I've made one from.
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By bloodyknucklehill - 16 Years Ago
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not to high-jack this but how do you tell the difference? I just bought an OD Y block tranny that has the big truck input shaft on it but that was all the info i could get from the seller..
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By crenwelge - 16 Years Ago
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If you are asking how to determine a T86 or T89, The T86 had a tin cover on top. The T89 has a 9 bolt cover in the side that houses the shift forks.
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By bloodyknucklehill - 16 Years Ago
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so the T-86 was a toploader and the T-89 was a side loader.. good to hear cause the one i grabbed was a side loader..
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By DANIEL TINDER - 16 Years Ago
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NO POWER SHIFTS with the square side cover or tin cover units or you will be looking for another one.[/quote
I wonder if the "inferior-to-BW/T85", Ford "paper" transmissions fail under power shift due to an excessive drive train power application, or due to the type of gear over-sliding impact/damage that the Hurst "Syncro-Lock" shifter was designed to prevent?
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By cbass139 - 16 Years Ago
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Missed out on the 63 and not sure about the 55, still working on it. The t86E looks like it might have been out of a studebaker and I dont even know where to begin figuring out how to make that work. Will keep you all posted.
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By crenwelge - 16 Years Ago
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Stutz will not bolt to your flywheel housing. I'm sure the tail shaft is a different spline. The T86 is pretty tough. I always had Hurst Mystery shifters and I came home with no low or reverse ever so often. Once I got married, the transmissions must have gotten better, because I don't think I lost a cluster gear after that. With normal driving, a T86 will last a long time. A T89 is better. They ever put them behind the 390.
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By cbass139 - 16 Years Ago
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Is it possible to get a car OD and use my existing trans to make it work? Either disconnect the OD portion and connect it to my current tranny or use the input shaft from the truck to make it work?
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By pintoplumber - 16 Years Ago
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I have a car overdrive transmission in my truck. I took the tranny apart and put the truck input shaft in it. I have the overdrive solenoid wired to a toggle switch. I turn it on and off as I need it. It's a heavy enough transmission for me, I race with it, but I've only got a hopped up 239.
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By cbass139 - 16 Years Ago
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Dennis, How hard was it to do that work? Could you guide me through it?
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By pintoplumber - 16 Years Ago
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It's not that hard. If I remember, take the side cover off and pull the gears out. I think the input shaft pulled out into the transmission, that's why I removed enough gears for clearance. Put the truck input shaft in , put the gears back in, you're ready to go. I have a 3.92 rear, and in overdrive it gives me the effect of having a 2.43 rear. At 65 mph it's great.
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By John Mummert - 16 Years Ago
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Not to confuse the issue, but, I have always thought the tin top cover overdirve was a T-86. Then I got a T-85 in a trade with a few spare parts. There was a spare side cover for a T-85 that clearly was marked T-86. Now I'm confused. Before trying to swap input shafts count the teeth on the gear. I'm not sure they're all the same.
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By crenwelge - 16 Years Ago
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The T85 has quite a few similarities to the T89. It is also is a stronger transmission. The T85 and T89 both use a 9 bolt side cover. The T86 was the one with the tin cover, The T86 was limited to about 300 cu in engines. The T85 was used in the police interceptor and the T89 was used in the 60's on 390s. Before you try swapping parts, you need to get a Ford parts book. They made a dozen input shaft/cluster gear tooth count combinations. The weak part of the T86 was the cluster gear, but the good part was it only got low and reverse. I just had to remember to park where I could go forward until I built another transmission.
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By Unibodyguy - 16 Years Ago
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Does anybody know/recall if the T89 has a synconized 1st gear?? I know the T85 sure don't!!!
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By crenwelge - 16 Years Ago
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Only second and third got the brass synchros. You had to double clutch a T89 to get it into first when you were rolling.
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By cbass139 - 16 Years Ago
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Dennis or anybody else, if I get a car OD and do the input shaft swap do I have to do anything to the other end, output shaft, to get it to work with my driveshaft? I know I will have to shorten my drive shaft but anything else?
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By Nick Brann - 16 Years Ago
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Hi, The T-85 O.D. transmissions are very strong and have a curved bottom on the side cover. I've had several of them over the years and wish I had one back. If the side cover is rectangular, it's not a T-85. If I remember right, one with O.D. weighs about 140 lbs. They have the big O.D. and were used in passenger cars in the 50's for cars over 300 cubic inches. The reason for this was that Borg Warner made all the O.D.'s for the U.S. cars and they specified their large O.D. for 300 cubes and up. So a '56 Ford with 292 came with the small O.D. while a '56 Merc with 312 came with the large O.D. I didn't make this up, learned it from an excellent old-time Ford mechanic who built my first 292 back in 1960, Dean McKee. When GM came to Borg Warner and wanted a 4-speed manual box in the late 50's, they gutted the T-85 and made it into a 4-speed, the T-10. Of course Borg Warner later sold the T-10's to Ford, Studebaker, etc. After a few yers, Ford wanted a stronger 4-speed, and they developed the top loaders. Hope this is helpful, Nick Brann - K.C., MO
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By pintoplumber - 16 Years Ago
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I don't know if '58 is any different, but my truck yoke with universal joint fit the splines on the tail shaft. Only had to shorten driveshaft.
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