Fox T-Bird/Cougar Forums

General => General Fox T-Bird/Cougar Discussion => Topic started by: dadstoys2 on December 10, 2008, 02:26:54 AM

Title: What about using a M5R2
Post by: dadstoys2 on December 10, 2008, 02:26:54 AM
I have done some reading on these trannies and they seem to be quite strong...some are saying much stronger than the T-5?
I believe they were used in the super coupes too but they were also used in ford trucks all over.
Anyone have torque numbers on these? All I can find is this:
The M5OD aka M5R2 has the following ratios in an F-150:
1st: 3.90
2nd: 2.25
3rd: 1.50
4th: 1.00
5th: 0.80
Reverse: 3.39
Also if a truck tranny is used where does the shifter sit at? It looks to be more in the middle of the tranny as the T-5 sits what looks to be much further back.
I am looking for options in my 92 5.0
~Rich
Title: What about using a M5R2
Post by: dadstoys2 on December 10, 2008, 02:30:00 AM
Oh I found some specs on SC cars.
89-93 M5R2
1st 3.75
2nd 2.32
3rd 1.43
4th 1.00
5th 0.75
R 3.26
94-95 M5R2
1st 3.42
2nd 2.16
3rd 1.34
4th 1.00
5th 0.75
R 3.26
Is the bell the same?
~Rich
Title: What about using a M5R2
Post by: Haystack on December 10, 2008, 05:02:43 AM
The bell housing should be the same. I know some guys here have used 3.8 v-6 bell housings from the 94 up mustangs and bolted them to 5.0's. I don't see why you couldn't use them. I think the 300ci i-6 in the ford trucks are probably rated for higher torque if you end up using one out of a truck, that would be one I would choose. Also, a lot of Mazda/ranger pick ups and explorers had them as well. May help you to broaden your search a little bit.
Title: What about using a M5R2
Post by: gumby on December 10, 2008, 06:47:00 AM
rangers use the M5R1, and the integral bellhousing means none of the ranger offerings will bolt up to a 5.0
Title: What about using a M5R2
Post by: V8Demon on December 10, 2008, 08:46:18 AM
You'd need the correct balance flywheel in 164 tooth from for the M5R2.
Title: What about using a M5R2
Post by: 5.0 tbird on December 10, 2008, 01:48:32 PM
IIRC You'll need a flywheel, block plate, starter, and clutch kit for an early 90's 5.0 5 speed F-150. And the trans, pedals, slave cylinder & hoses, console top, and maybe the trans crossmember & driveshaft from a 5 speed SC.
Title: What about using a M5R2
Post by: Beau on December 10, 2008, 01:59:52 PM
There's also a reason the 5.0 truck guys swap 'em out for the ZF 5 speed that comes with the 351w trucks... ;)

They're not that strong when put a lot of power to them.
For the cost of getting one, and all the parts to make it work, I'd guess you could probably beef a T5 up and have the same power capability in a package that already fits...just my opinion though.
Title: What about using a M5R2
Post by: 5.0 tbird on December 10, 2008, 02:45:50 PM
He has a 92 so a T5 won't work too well because the shifter would be too far forward. I had to look back up at the op before I posted just to be sure we weren't talking about a fox. :hick:

The M5R2 is pretty strong, but the synchros wear out pretty fast.
Title: What about using a M5R2
Post by: HAVI on December 10, 2008, 10:55:19 PM
early gen M5R2's were pr0ne to leaking as well. (atleast in the F150's)  Bummer about them is the integral clutch/bearing.  If anything happens, the whole trans has to come out.  My guess is to find a 90's car version and have everything there for swapping out.  IMO, they're not the most bulletproof.  Like FTF said, most truck guys ditch them asap, and find a ZF5.  I would post a picture of mine from an '89 f150, but it's buried under snow....but IIRC, the shifter is pretty far forward on the truck version.
Title: What about using a M5R2
Post by: dadstoys2 on December 11, 2008, 08:39:35 AM
Well I saw somewhere a b&m shifter that ended up further back that would help with the T-5 swap. but the M5R2 looks to be just as strong as the T-5, and as far as I can tell both swaps require a swap of driveshafts. What shaft is used when going with the T-5? The M5R2 just uses the 5sp driveshaft from a 5sd T-bird.
Also when I look at the T-5 and M5R2 it looks like the t-5 would place the shifter a lot further towards the rear of the car and the m5r2 would be much futher forward....which will be closer to the factory floor shifter that is in it now?
~Rich
Title: What about using a M5R2
Post by: Beau on December 11, 2008, 02:20:14 PM
Quote from: dadstoys2;247208
Well I saw somewhere a b&m shifter that ended up further back that would help with the T-5 swap. but the M5R2 looks to be just as strong as the T-5, and as far as I can tell both swaps require a swap of driveshafts. What shaft is used when going with the T-5? The M5R2 just uses the 5sp driveshaft from a 5sd T-bird.
Also when I look at the T-5 and M5R2 it looks like the t-5 would place the shifter a lot further towards the rear of the car and the m5r2 would be much futher forward....which will be closer to the factory floor shifter that is in it now?
~Rich

The T5 can and will use the stock driveshaft in your Fox, and the hole in the floorpan will be the same. (if you have an auto car, you'll need to cut the hole)
The M5 will take a new driveshaft, and the shifter location will be way off, as mentioned.

Have you looked into a Tremec, as an option?
Myself, Id go with that anyday over swapping an inferior transmission...plus, it'll bolt up with nothing more than a new bell.
Title: What about using a M5R2
Post by: V8Demon on December 11, 2008, 03:03:28 PM
Whether or not it's inferior is debateable.  I've seen enough low mile T-5's let got to know if it was a choice between the T-5 and the M-5; I'd go M5....
Title: What about using a M5R2
Post by: Haystack on December 11, 2008, 10:20:21 PM
A t-5 would be useless in a junkyard swap in a 92 cougar. The other one has the right sized length, so he should have to get the supercoupe manual driveshaft and the tranny. With a t-5 he would need a custom driveshaft and shifter.
Title: What about using a M5R2
Post by: Beau on December 12, 2008, 01:41:38 AM
Yeah, I keep forgetting he's referring to an MN-12 and not a fox...my bad.

In that case, I'd locate the M5 stuff as needed...they ain't THAT bad, but I  sure wouldn't put much more than 300 lb.feet of torque to one. Least not a stock one at that...
Title: What about using a M5R2
Post by: dadstoys2 on December 12, 2008, 05:12:21 AM
So the T-5 does not fit to my driveshaft? And the shifter does'nt either? Ugh....
Guess it will have to be thee M5r2
Title: What about using a M5R2
Post by: cougarman on December 12, 2008, 02:12:06 PM
If I remeber right, you will need to use an m5 from a SC, the truck ones have the shifter in the wrong place. search over on TCCoA.:D
Title: What about using a M5R2
Post by: HAVI on December 13, 2008, 10:28:16 AM
here's one from a truck
Title: What about using a M5R2
Post by: jcassity on December 13, 2008, 01:54:25 PM
Isnt the ZF a "mazda TK" transmission?

My 351 Bronco has a 5spd but the slave is internal.
That is what I dont like about this manual.
Title: What about using a M5R2
Post by: Beau on December 13, 2008, 02:58:43 PM
Quote from: jcassity;247424
Isnt the ZF a "mazda TK" transmission?

My 351 Bronco has a 5spd but the slave is internal.
That is what I dont like about this manual.

No, a ZF is a ZF, the M5R-series are Mazda-sourced, but the ZF DOES have the internal hydraulic setup, same as the M5...

Once you figure out how to remove the internal slave with 2 screwdrivers, and not the fancy gizmo..it's easy lol.