Long Tail T85, OD Transmission Interchange

[rkapteyn]

I have a long tail shaft T85 for a 1958 Packard Hawk , new in the original Studebaker crate for $1200.00 if anyone is interested.
I also have a T10 out of an Chevy powered Avanti with the bellhousing etc.
PM me if you need more info.

[54stude]

I have both 56 and 57 t-85 short tail transmissions here, and the 56j version has a much shorter pilot bearing surface on the "main drive" than a 57-58 Studebaker version. I could measure the end of the "main drive" if people want me to.

The input shaft "main drive" is part number 458470 in a 56j, and part number 1540811 in 57-58 cars.

Also, all car versions from 56-58 use the same cluster gear part number 458455.

[SN-60]

To: bezhawk,------ Joe Hall was referring to a long-tail T-85 as used in the '58 Golden Hawk. We've agreed that certain FoMoCo models used the long-tail T-85, and with a change of input shaft, it should bolt into
a Studebaker in place of a T-86. The question becomes 'If a Studebaker T-85 input shaft can't be located, would an input shaft made for a Studebaker version T-10 interchage?' It confuses the issue when You mention installation
of a T-10 in a 56J, because, as You know, the 56J input shaft is unique, and definitely would not work behind a Studebaker engine. r1lark's Hollander information is correct. A T-10 input shaft will not
interchange with a T-85 input shaft, IF that T-85 is going into a 56J, because the factory never made a T-10 specifc input shaft for the Packard engine. I know You get all of this, but some folks might not.

[PackardV8]

The T85/T89 was manufactured for about fifteen years. I have a mid-60s T85 from a Ford F150. It is quite a bit different than the '58 Stude version. Different input shaft, different gear ratios, different angle on the low-reverse slider gear, different positioning of the governor and solenoid.

Even with all the differences, it could be made to fit a Stude or a Packard, which is why I've hung on to it.

jack vines

[bezhawk]

The 56J had the T85, and the T10 was from a Ford. The pilot bearing was also from a Ford, and was a ball bearing type.....Sorry, didn't write part #s down....but I think the pilot was from a truck. Much larger than the bushing type used on Studebaker engines....but , we're talking about a Packard V8 in this case.

[studebakerkid]

The length differnce could be accounted for by machining a longer pilot bushing I am thinking.

[JoeHall]

The 1959-64 Stude Shop Manual lists two different input shafts for four speed, early v. late. The difference given in the footnote is tooth count. If I weren't so lazy, I'd pop a sidecover on a T85 out in the shed and count teeth. If Bez did it before (and I believe him), it seems a question of which T10 shaft he used, early or late.

[JoeHall]

I am thinking the Hollander is correct, in that the two shafts are different and not interchangable, IF the intended use is for original application, i.e. back into the Merc or T'Bird.

[r1lark]

Hmmmm. that's interesting.....I guess when I put a T85 input shaft into a T10 in a 56J, I thought the reverse would also work!
I must have done something wrong, because it can't be done

Disclaimer: just reporting what the Hollander says. I make no claim as to the accuracy of this information.

[SN-60]

OK,------Are we talking about the fact that a T-85 input shaft for a '56 Golden would have a different pilot end than one for say...a '57 or '58 Golden or Stude truck? (which are probably the same as a T-10 shaft)

[jrlemke]

The Hollander said it wouldn't work because the clutch end is different. The gear end could be the same. -Jim

[bezhawk]

Interesting question, this sent me to my Hollander manual. According to Hollander, they do not interchange.

Hmmmm. that's interesting.....I guess when I put a T85 input shaft into a T10 in a 56J, I thought the reverse would also work!
I must have done something wrong, because it can't be done

[r1lark]

Couldn't you take the input shaft/gear from a T-10 to install in a T-85?
I believe they are the same.

Interesting question, this sent me to my Hollander manual. According to Hollander, they do not interchange.

DISCLAIMER: just reporting what the Hollander says. I make no claim to the accuracy of this information.

[bezhawk]

Couldn't you take the input shaft/gear from a T-10 to install in a T-85?
I believe they are the same.

[JoeHall]

Ed,
You're right about the input shaft. Looking at a close-up pic I saved of the one that just went off ebay, it appears about 1" shorter. The splines are also different, but that would not be an issue, just get a Ford type clutch disc. The tip for the pilot bushing appears to be the same diameter (.750"?), but a little shorter also. Might be able to make an extension/adapter of some sort, instead of having to go inside the tranny, not to mention looking for a Stude T85 input shaft. It may be worth the effort for someone wanting a serious driver, while keeping as near "correct" Studebaker, or at least as near "era correct" as possible.
Joe