RB25 Trans no longer needed for Z32/RB26 Swap

[Booztd 3]

Guys

Originally I purchased an RB25 Transmission because when I was researching the swap, I was under the impression that ONLY an rb25 bell housing and input shaft would work. So I sourced one for 800+125 shipping. During that time I was questioning whether or not the RB26 bell housing would work, however I couldnt get any one to get me measurements or take pictures, and RB26 trans arent just laying around everywhere.

Anyways, fast forward to yesterday. After completion of the RB25/Z32 trans mating, I decided I should still have a look at the RB26 trans, since it was just setting there. Here are the pictures of the RB25 Bell Housing & Front Cover, next to the RB26 Bell housing & Front Cover

My new RB25/Z32 setup on the left, RB26 stock trans on the right



RB26



RB25



I did not get a picture of the very top of the bell housing to identify how far the input shafts stuck out on either one, but I remember eyeballing them and I cant physically see a difference. Remember from my 'how-to' post that we measured the lenght of the RB25 in put shaft and the Z32 input shaft and the Z32 was ~1/8" longer.

To summarize all of this up. IN THEORY - the only thing you need to do in order to bolt a Z32 transmission up to your RB motor is swap the bell housings. The input shaft lenghts should be negligible, and will not effect anything. If anything, the Z32 input shaft is longer, so you may need to take a grinder just to shave some material off, but I dont suspect this being the case.

In my defense, since I had already ordrered the transmission and done the research, and I knew that my Z32 trans had some grinding issues, I went ahead and rebuilt it. I could have saved alot of $$ and just pulled the RB26 bell housing off of the RB26 trans and swapped it with the Z32 trans.

[jzman414]

and you would have had a 6speed as well if you used the z32 bell housing on the rb26 transmission correct?