Irocwannabe

iTrader: (5)

I have just bought a t5 tranny and was told it was out of a v8 but found it was not 26 spline and i was wondering is it at all possible to swap the input shafts and the bell housing to fit my 350? any info would be greatly appreciated

f-crazy

iTrader: (-1)

the bellhousings will swap...and im in the same boat as you...i will see if the inputs will swap tomorrow

Petes 84Z28

I believe you'll find they won't swap over. The V6 uses a smaller transfer gear (fewer teeth) on the input shaft which in turn lets the larger countergear (more teeth) rotate slower for the same engine RPM. This helps give the higher (numerically - something like a 4.03 vs the 2.95 or so found in the V8 units) first gear ratio found in the V6 T5's.
This is also what makes them weaker when installed behind a V8 as there is more torque multiplication trying to push the countershaft away from the input shaft resulting in the case stretching and ITDS (Internal Transmission Detonation Syndrome).

Irocwannabe

iTrader: (5)

would a rebuild kit be at all possible to use if i got one for the v8 gear ratios?

RB83L69

A rebuild kit contaons bearings and seals and such; no magic gear-tooth-changing compound. So no, you can't "rebuild" it and turn the one gear into the other.

The clutch gear and countergear are different between the 2 transmissions The 6-cyl trans has a smaller clutch gear with fewer teeth and a larger countergear with more teeth, compared to the V8 ones. Since they have to match, you can't change just one, they have to be matched, as a set. The rebuild kits are teh same anyway, as they use the same bearings.


How to make a 6-cyl trans fit a V8 in 5 difficult and costly steps, assuming you already have the 6-cyl one:

1. Buy a V8 trans.
2. Buy a rebuild kit.
3. Take both transmissions apart.
4. Put all the v8 guts into the 6-cyl case (which incidentally is the same as the V8 case)
5. Put the V8 trans built in the former 6-cyl case in the car. Throw away a bunch of useless 6-cyl parts.


How to accomplish the same thing in 2 easy steps:

1. Buy a V8 trans.
2. Put the V8 trans in the car. Sell / throw away / give away 6-cyl transmission, whole.


It is possible to graunch the 6-cyl trans into the V8 car by using some certain clutch disc, that is the same diameter as a V8 disc, but has the 6-cyl hub. However, since it has the small diameter weak 6-cyl clutch gear shaft with the smaller splines, it would be much weaker than a V8 trans; and would have the usual 6-cyl low-performance ratio problem, where the gear ratios are so widely spaced, that it slows the car down greatly compared to closer-spaced ratios behind a motor with enough power to move the car.

f-crazy

iTrader: (-1)

RB i just tried to pm you but your box is full...

i got this v6'er from a 92 for 200 bucks shipped..i was just going to swap the inputs but i had no idea about the counter/clutch teeth count...since i cant swap inputs directly could i take the v6 mainshaft and put it in my V8 tranny along with the mainshaft gears and my counter/clutch gears?....or maybe unload this and drive to ohio

RB83L69

It gets that way alot....

I can't say whether a 6-cyl mainshaft is the same as a V8. I think it is but I don't know it for sure. Same for the various smaller gears on the mainshaft; I think they're all the same, but again, I don't know for sure.

The difference I do know for sure, is that the 6-cyl countergear has a larger gear at the very front, where it meshes with the clutch gear, than the V8 one. It is larger diameter and has more teeth. But, since the distance between the clutch gear/mainshaft axis and the countergear axis is the same in both transmissions, that means the portion of the 6-cyl clutch gear that mates with the countergear has a correspondingly smaller diameter, and fewer teeth, compared to a V8 one. That's what makes the ratios different. And of course the clutch gear's clutch splines are smaller, as we all know.

So, I think that if your V8 clutch gear and countergear are any good, you can take the 6-cyl mainshaft and put it in your V8 transmission; or take the 2 gears and put them in the 6-cyl one. But I've never done it so I don't know it for sure. I've never had a 6-cyl transmission at all, except one time I went to the junkyard and bought what was supposed to be a V8 one, didn't pay any real attention to its details, R&Red it, and the car wouldn't pull off So I had to yank it back out, put my smoked V8 one back in, drive it back to the buzzard and try again, and R&R it a third time. Ruined my whole afternoon, having to do that crap 3 times, waiting for the car to cool off and all. Ever since then I have avoided anything to do with a 6-cyl trans. I don't have any 6-cyl cars, and no interest whatsoever in them, never have worked on one, so beyond that one bad experience, they are a complete unknown to me.

From what I can recall of your situation though, I have my doubts; I certainly wouldn't re-use either of those gears in my own trans. But that's just me. I've torn up so damn many of these things (usually the clutch gear & countergear, usually from misalignment, such as you had ....), and they're so fragile, that if one isn't perfect, I won't put myself through the effort of an extra R&R from it screwing up on account of re-using some part I should have replaced. Been there done that way too many times. But if you are willing to risk it, who knows, maybe it will work for you.

Petes 84Z28

A bare mainshaft should swap over, but some or all the gears may need to be swapped as well.
The only way to find out if the contergear shaft or the mainshaft gears will swap between the two, is to do a 'tooth count' of each gear on both shafts; if they match up down the line, they can be swapped. But then you'd be putting two used parts together that are not 'familiar' with each other...it would be like putting a mixed-up set of used (non-roller) lifters from another engine into yours; you'd just be looking for trouble.

Irocwannabe

iTrader: (5)

RB thanks for the info, but if a v8 trans were easy get a hold of i wouldn't be asking if the internals could be swapped over.

RB83L69

Yeah I know how it goes.... just the same, info is info as long as it corresponds to reality; and telling you rosy stories that you want to hear won't make them come true. I personally prefer to stick with known facts and to admit what I don't know and prepare to learn.

Watch the classifieds on this site. They're on there all the time. I wish this site had existed back when I was still ripping them to shreds on a more or less quarterly basis.

Irocwannabe

iTrader: (5)

i know i dont know much about the t-5 thats why i asked the question but thats all it was a simple question, a "no it wouldn't work" would have been fine, but you had to go overboard with the magic gear changing stuff. Thanks again man

f-crazy

iTrader: (-1)

Once your here a while youll begin to understand RB...hes got this nausea for T-5's even though he practically owns stock in borg warner...and he knew you didnt know much about them just by typing the question you asked..and youll see once your here for a while...he wanted to make sure that you exactly why it wouldnt work..anyone can say it wont work, but only someone with alot of experciance could tell you why..RB and Pete both know there stuff so dont take it to heart when they (RB) draw little colorfull pictures or pulls a rabbit out of his hat ...



i called hanlon today and she said that a V6 mustang mainshaft is the same as a v8...but she wasnt 100% sure if the gm V6 and 8 were the same....i have to try to catch Bob to see what he says...

RB83L69

Yup, although I don't have a problem with T-5s, just a healthy respect for their limitations, having destroyed a number of them you would probably be amazed at.... I still have a sizeable pile of T-5 stuff that has at least 2 oe 3 whole transmissions plus buckets of parts, but not enough parts among it all to make one whole good one.

If all I said was "No it won't worK" your next question would have been "why not?" or "what will work then?" just like everybody else, so I answered it in anticipation of that. With genuine actual technical reality, not a bunch of "I think" or "I heard" or "seems like" or any of that. Instead of Friday night McDonalds parking lot monkey-spank, I gave you facts, and told you where my knowledge on the subject ended, so you know where the gaps are. Without that, you might even have gone out and spent a whole bunch of money on stuff that wouldn't work together, and then you'd have been posting a string of "how do I put the square peg in the round hole, I've got $$$$hundreds in all this stuff and I can't make a transmission out of it" type of frustration questions. It's happened before. Let me tell you, that situation sucks. I sure wouldn't want to be in it.

Hopefully now you understand what you're working with a little better, and what you can do and what you can't do, and maybe what the right thing to do to take care of your problem is.

RB83L69

In fact, there are 2 V8 T-5s for sale right now on the classifieds, on the very first page. Maybe more if you do a search through them.

Incidentally, people all the time say "will not ship" about things like that.... don't be scared off by that.... about 99% of the time, you can talk them into wrapping it in newspaper and taking it to some PakMail type place, and you pay for it from there. Most people who say that simply have no idea how to go about doing it and think that it's going to be hard to do or something. If you make it easy for them they tend to be more open to the suggestion.

Irocwannabe

iTrader: (5)

thanks i really appreciate you guys and help and for the clarification.

CrazyHawaiian

I'm gonna be using a T5 out of a V6 in my 89 RS drift project for a while. Engine is a carb'd L98 (stock L98 heads and cam). The tranny is out of an 88SC with the V6, but its a W/C T5 unit. I got the V8 bellhousing and stuff, and a 14 spline 10.5" clutch. I haven't put it all together yet, but I know it will work because other people on this board have done it (try a search for V6* T5*). I know its going to be weaker than a V8 T5 but for the price (free + bellhousing and clutch) I cant go wrong. And considering the sport I'm using it for, it might last longer than I think. I imagine for drag racing (or any sport that requires traction) the strength is questionable, but for drifting we mainly deal with a loss of traction. So if the wheels slip instead of hooking, I'm hoping the trans will hold together. But I consider it an experiment, so we'll see what happens. When it finally does blow up I'll probably do a TKO swap (which is what I planned to do in the first place).

f-crazy

iTrader: (-1)

how much was that 10.5 inch 14 spline clutch?....and what kinda clutch is it?