Borg Warner T5 conversion feasibility
I am now exploring other solutions to get an OD. On my Chevelle I converted from a TH350 to a 200-4R. Of course now, I am spoiled.
For context, living overseas, in Belgium, is a challenge. Shipping stuff over is expensive... add 30+40%. Sometimes you have to make do with what you have.
Aaaaanyway I found over here a reasonably priced Borg Warner T5 13-52-065
According to the numbers... it is not a WC, but was behind a 1984 Mustang/Capri 5.0 V8
1: 2.95
2: 1.94
3: 1.34
4: 1.00
5: 0.63
These ratios should work fine behind a 1969 C3.
I realize this is not the strongest release, but it should live behind my underwhelming, vanilla rebuild. I doubt I even have 200 ponies for the moment. TQ, not much more.
One day, I will pull it out and reinforce it.
For now, and considering what I said above:
- Is there any screaming reason that I should walk away from this trans?
- If no... is there anything I should look out for?
- Are there additional parts that I might snag while at the salvage yard? Slip yoke... ???
DC3






A common mistake is to see the 13-52-065-xxx number cast into the side of the case, do a search, and find the britishV8.org website.
That site has a pretty comprehensive list of T-5 ID TAGS. There they look up the ID TAG using the first 7 digits of the casting number
and have mistakenly identified their transmission as being a NON-World Class "1352-065 - Ford 1984 Mustang/Capri 5.0 V8"
I'm among those that did the T5 conversion, once you get the actual model of you transmission I'm sure your questions will be answered.
Good luck!
The full number I had was: 13-52–065-922.
Last edited by DorianC3; Nov 16, 2018 at 12:20 PM.






This case is used in Mustangs, Camaros and S-10
Now, do you know from which car this is from?
You'd probably like it to be from a GM (Camaro Iroc-z), because, while slanted, it has the GM bolt pattern. Ford's are fine too, but you'll need an adapter plate or a custom bell-housing.
Last edited by Denpo; Nov 16, 2018 at 12:42 PM.






Not only the guy tells you how to do it properly, he also goes in length to explain you why.
So, congratulations, you may have scored a WC T5.
Now, do you know from which car this is from?
You'd probably like it to be from a GM (Camaro Iroc-z), because, while slanted, it has the GM bolt pattern. Ford's are fine too, but you'll need an adapter plate or a custom bell-housing.
Intestingly a while back I bought some IROC rims off of this guy. I wonder...
Even over here I have Thanksgiving off. I’ll drive over and get a closer look at it.
I take it I should snag the slip yoke as well ?
Last edited by derekderek; Nov 16, 2018 at 01:18 PM.
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Hmmm. Now this is interesting. Actually all of it is !! Thanks for sharing all this information.
Intestingly a while back I bought some IROC rims off of this guy. I wonder...
Even over here I have Thanksgiving off. I’ll drive over and get a closer look at it.
I take it I should snag the slip yoke as well ?
Yeah, I'd take the slip yoke while being there.
As a frenchy in Quebec I truly appreciate how lucky I am to be on the right continent for this kind or addiction.
Check here for picture of the transmission support I build for my T5.
Yeah, I'd take the slip yoke while being there.
As a frenchy in Quebec I truly appreciate how lucky I am to be on the right continent for this kind or addiction.
Check here for picture of the transmission support I build for my T5.
At this point the best course of action is to ask them what vehicle this came out of and then to go see it.
Bien à vous

Last edited by DorianC3; Nov 16, 2018 at 03:42 PM.
Last edited by derekderek; Nov 16, 2018 at 04:46 PM.
Yeah, I'd take the slip yoke while being there.
As a frenchy in Quebec I truly appreciate how lucky I am to be on the right continent for this kind or addiction.
Check here for picture of the transmission support I build for my T5.
I have no ideaI have found them a little (<cough> very) unreliable when it comes to getting accurate information on the specs of this trans. Clearly I have no choice but to go up there and eyeball it myself. Who knows? This could be the golden ticket.
Knowing the place, I would think it will be from either a Ford or a GM V8; both acceptable. I would also suspect that it will be a later WC model. The most important bit for me other than being a V8 and non S10 model... is the gear stack; it needs to be appropriate for 3.36:1 and have an OD around 0.68. This I can determine using the ID tag... or even by counting revolutions.
I need help understanding this "cant" business.
GM
If I am understanding this correctly, a GM trans can be mated to my muncie bellhousing. However... there will be a cant of 18 degrees (shifter toward driver). That will require an adapting bracket on the crossmember. I will also need to be careful to ensure the elevation is correct so as to avoid driveshaft vibration. The shift lever itself will also need to be adapted. The Z-bar clutch mechanism will work ok. GM clutch kit. Pilot bushing is fine as well. The slip yoke will work with my drive shaft.
Ford
The Ford input shaft is longer. But that is ok, an adapter plate will allow me to mate it with my bellhousing. It will not be canted but still may require some tweaking at the transmission mount. The shift lever may still require an offset. The slip yoke: the Ford one will work with the GM drive shaft? Pilot bushing will need to be adapted. A hybrid clutch kit will need to be assembled. Since I the bellhousing is mine (adapter plate) the Z-bar will work.
(Incidentally, if I go forward with this, I may go hydraulic clutch.)
In both cases the drive shaft may need to be shortened.
Understanding this is important in my determination to take or reject this trans.
BTW, WHY did GM cant their trans?
Last edited by derekderek; Nov 17, 2018 at 06:32 AM.
Last edited by derekderek; Nov 17, 2018 at 06:57 AM.






If it's a WC you'll get the right ratios.
IIRC the Ford T5 have a slightly shorter 5th (0.8 vs 0.63), but the first is the same.
GM slanted the WC trans so nobody would put a V6 T5 behind a V8 (an break it).
T5 have a bad reputation mainly because the casing is a bit flimsy, tend to twist ever so slightly.
People have been running T5 behind BBC without problem, just don't drop the clutch in first drag race style and you'll be fine.
One option to beef it up is to use an G force case
That's what I did, but the case has to be drilled for the GM holes.
Last edited by derekderek; Nov 19, 2018 at 06:32 AM.









