I've had a spare G series tranny for a while and the other day i picked up this probe GT tranny, i've always been intrigued by the BG V6 swap in the 90-94 323's
So the idea occured to me if there basically the same tranny (internally) except for different bell housings, then i "should" be able to swap the differentials making the probe tanny able to accept the 323/capri axles, which "should" make a V6 swap relatively simple
so i tore down the two trannies today to compare and here's what i found
The 323 tranny with the 5th gear cover off
![](http://i248.photobucket.com/albums/gg162/damkid_photos/IMG_1444.jpg)
now with the case separated
![](http://i248.photobucket.com/albums/gg162/damkid_photos/IMG_1445.jpg)
And a bare empty tranny
![](http://i248.photobucket.com/albums/gg162/damkid_photos/IMG_1446.jpg)
The probe tranny with the case separated
![](http://i248.photobucket.com/albums/gg162/damkid_photos/IMG_1442.jpg)
bare empty probe tranny with all the parts spread over the bench
![](http://i248.photobucket.com/albums/gg162/damkid_photos/IMG_1443.jpg)
And here's the part i was looking to find out, the differentials side-by-side, the 323 is on the left
![](http://i248.photobucket.com/albums/gg162/damkid_photos/IMG_1448.jpg)
You can see the probe's ring gear is thicker but it's not taller that the 323's but as far as i can tell thats the only difference in the differentials other than the spline count
![](http://i248.photobucket.com/albums/gg162/damkid_photos/IMG_1449.jpg)
![](http://i248.photobucket.com/albums/gg162/damkid_photos/IMG_1447.jpg)
The only difference i've spotted so far with the gear sets so far is the gear that drives the differential is thicker on the probe tranny
The 323 gear:
![](http://i248.photobucket.com/albums/gg162/damkid_photos/IMG_1452.jpg)
Probe gear:
![](http://i248.photobucket.com/albums/gg162/damkid_photos/IMG_1453.jpg)
I set the 323 differential in the probe housing and it fits like it belongs, so when i re-assemble the tranny i'll use the 323 diff in the probe tranny so it'll be ready to swap into a festiva :evil4:
So the idea occured to me if there basically the same tranny (internally) except for different bell housings, then i "should" be able to swap the differentials making the probe tanny able to accept the 323/capri axles, which "should" make a V6 swap relatively simple
so i tore down the two trannies today to compare and here's what i found
The 323 tranny with the 5th gear cover off
![](http://i248.photobucket.com/albums/gg162/damkid_photos/IMG_1444.jpg)
now with the case separated
![](http://i248.photobucket.com/albums/gg162/damkid_photos/IMG_1445.jpg)
And a bare empty tranny
![](http://i248.photobucket.com/albums/gg162/damkid_photos/IMG_1446.jpg)
The probe tranny with the case separated
![](http://i248.photobucket.com/albums/gg162/damkid_photos/IMG_1442.jpg)
bare empty probe tranny with all the parts spread over the bench
![](http://i248.photobucket.com/albums/gg162/damkid_photos/IMG_1443.jpg)
And here's the part i was looking to find out, the differentials side-by-side, the 323 is on the left
![](http://i248.photobucket.com/albums/gg162/damkid_photos/IMG_1448.jpg)
You can see the probe's ring gear is thicker but it's not taller that the 323's but as far as i can tell thats the only difference in the differentials other than the spline count
![](http://i248.photobucket.com/albums/gg162/damkid_photos/IMG_1449.jpg)
![](http://i248.photobucket.com/albums/gg162/damkid_photos/IMG_1447.jpg)
The only difference i've spotted so far with the gear sets so far is the gear that drives the differential is thicker on the probe tranny
The 323 gear:
![](http://i248.photobucket.com/albums/gg162/damkid_photos/IMG_1452.jpg)
Probe gear:
![](http://i248.photobucket.com/albums/gg162/damkid_photos/IMG_1453.jpg)
I set the 323 differential in the probe housing and it fits like it belongs, so when i re-assemble the tranny i'll use the 323 diff in the probe tranny so it'll be ready to swap into a festiva :evil4:
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