? about t5 tranny/drive shaft and fluids

jae902 · Jan 26, 2004

Just dropped in my motor and t5 tranny. I also have the drive shaft that came with the tranny from a 88 gt. Thinking that it would be long and probably need to be shortened, i went to place it in and it fit perfectly. The yoke was out about 1 inch and the thing lined up perfectly. Is that right? For some reason i thought that it would have to be shorten. Also, what weight oil should i be pouring in the t5 tranny, and about how many quarts does it take?

ozstang65 · Jan 26, 2004

jae902 said:
... Also, what weight oil should i be pouring in the t5 tranny, and about how many quarts does it take?

I'm pretty sure the T5 uses ATF, not normal gearbox oil. As far as the quantity goes, no idea, but keep filling until it comes out the fill plug hole.

68stang351 · Jan 26, 2004

3 quarts of Dexron/Mercon III

DO NOT use gear oil!

6Stang7 · Jan 26, 2004

Like ozstang65 and 68stang351 said, the T-5 uses ATF, not gear oil. I recommend; however, that you run a synthetic in the tranny, like Royal Purple. Yes it costs more, but you only have to get 3 quarts and it's well worth it.

-Shaun

SandSprite · Jan 27, 2004

If you have a t5-z or a t5 with the carbon fiber blocker rings ( i think they were in 92-93 5.0s), you are NOT supposed to use synthetic.....

http://www.carbdford.com/forums/viewtopic.php?t=1332&highlight=t5+atf+fluid

don't shoot the messenger.....

67coupestang · Jan 27, 2004

i stand with chevy's syncromesh fluid, but I use it in my 3550, not sure about the t-5...

slapper · Jan 27, 2004

67coupestang said:
i stand with chevy's syncromesh fluid, but I use it in my 3550, not sure about the t-5...

That's the stuff to use. $$

jae902 · Jan 27, 2004

So does the t5 use dexron/mercon III or ATF, cause i know they sell both. What about the driveshaft fitting perfectly in there? Is anyone else using the same driveshaft, did it also fit perfectly in there?

68stang351 · Jan 27, 2004

Its dexron/mercon III

I don't know how a driveshaft out of an 88 could fit, because I have one leaning up against the fence, right next to a spare driveshaft for my 68 with a T5, and its waaay shorter.

But if it fits, it fits. An inch is about right on the yoke, so you should be ok.

geegee · Jan 27, 2004

jae902 said:
So does the t5 use dexron/mercon III or ATF, cause i know they sell both. What about the driveshaft fitting perfectly in there? Is anyone else using the same driveshaft, did it also fit perfectly in there?

Dexron/Mercon...

jae902 · Jan 27, 2004

I was mistaken, i knew that the 8.8 shaft didn't fit with the swap. I put in my old drive shaft thinking that it was the 8.8. The 8.8 shaft is alittle too short for this application. Sorry for any confusions.

68stang351 · Jan 27, 2004

jae902 said:
I was mistaken, i knew that the 8.8 shaft didn't fit with the swap. I put in my old drive shaft thinking that it was the 8.8. The 8.8 shaft is alittle too short for this application. Sorry for any confusions.

Ok, I gottcha!!

When I first did my swap, and still had the 6 cyl rearend, the original 6 cyl. 3 speed driveshaft was the perfect length for my windsor and the T5.

blue66tang · Jan 27, 2004

SandSprite said:
If you have a t5-z or a t5 with the carbon fiber blocker rings ( i think they were in 92-93 5.0s), you are NOT supposed to use synthetic.....

http://www.carbdford.com/forums/viewtopic.php?t=1332&highlight=t5+atf+fluid

don't shoot the messenger.....

Oops

6Stang7 · Jan 27, 2004

SandSprite said:
If you have a t5-z or a t5 with the carbon fiber blocker rings ( i think they were in 92-93 5.0s), you are NOT supposed to use synthetic.....

http://www.carbdford.com/forums/viewtopic.php?t=1332&highlight=t5+atf+fluid

don't shoot the messenger.....

Glad you found that. So what trannys does this apply to? I was planing on running Royal Purple, but if I have carbon fiber parts in my tranny and sythentic oil disolves them, then old ATF it is. It's from an 87 GT.

-Shaun

jae902 · Jan 27, 2004

68stang351 said:
Ok, I gottcha!!

When I first did my swap, and still had the 6 cyl rearend, the original 6 cyl. 3 speed driveshaft was the perfect length for my windsor and the T5.

Ok, so now i've got both drivelines. I took the yoke off the 8.8, then i took the yoke off the original one. The 8.8 yoke is alittle bit bigger, and uses bigger u joints. Can i even interchange them, what u joints do i need. Is this the same t5 yoke that mustangsplus sales for the conversion, or is it different?

SandSprite · Jan 27, 2004

well according to this:
http://www.ddperformance.com/Trans ID chart.htm

only 92-93 5.0 and ford motorsport trannies (service replacement) (any thing with a 'd' note) has the carbon fiber 3/4 blocker. it looks like the t5z doesnt have them, but i'm not sure how inclusive this database is. according to the post on carbdford, it affects the later t-5's made by tremec (tremec bought the tranny side of BW). So i dunno. I think regular old Mercon/Dextron III ATF should be fine.
I know a lot of people like synthetic for some reason, but I am not convinced yet. Most of these motors and trannies we work with were designed before synthetic, so it wasn't exactly planned for. Plus it costs more......

? about t5 tranny/drive shaft and fluids

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