I'm looking at transmission option for 500ft-lb +. I'm leaning toward T56 or 370z transmission conversion. I don't want to mess with auto bell housing and putting a kit together on my own. I am looking for a finished product that has seen some mileage by the members.

I'm currently looking at RZmotorsport conversion kit vs few other options. Is anyone running RZ t56 conversion kit? Can someone chime in on the quality, fitment, and longevity? Thanks!

 

I take this as a firm no.

 

Any links to this ??, just blew up my gearbox a few days ago , 20B just eats through them , but i am hesitant to throw a ton of money at it , since i dont drive it as much anymore , but i would definitely take a look at a easy conversion , if there is ever such a thing

 

I don't think he has a shop. He also has 20 b and took the initiative to source parts together to make the thing work. He uses QuickTime bellhousing, spec clutch, and t56 transmission. I don't have all the details, but from the pictures provided, and looks like the input shaft of the T56 mates with the flywheel for the pilot bearing engagement. The throwout bearing is hydraulic push Style. The spec clutch is carbon clutch twin disc. He is around the Forum. His user name starts with RZ Motorsports or something. It sounded promising, but I think he is still trying to make it work on his own car. He said he sold the kit to members who are running them without issues, so I figured I'd give it a shot here. Well we all certainly wish him the best and hope that this thing will work out of the box as promised. I hate taking down transmission so much that I prefer not to be a guinea pig on this particular project

 

I would have a really good look at the colins kit
Mazda Rotary 13B 20B 26B to Nissan 6 Speed 350Z 370Z 350ZHR 370ZHR Transmission Adaptation Kit

Looks good and pretty much has everything without having to **** around too much.

 

I call requirement to cut off bellhousing off transmission with pinpoint accuracy "f'ing around too much" lol

I have 370z trans ready to go. I just started hearing about all the syncro issues. I decided against it. I also need to relocate shifter which I rather not do.

 

Fair enough, I am sure you will find similar faults with the T56 trans.

In terms of ******* around, who knows how long this mythical rzmotorsport kit is going to take. Seems to be taking years and years without much progress to show.

 

do yourself a favor and talk to Howard and do what he did i did the same thing its much easier. i'm telling you a 7.25 clutch (which is what the quicktime bell is using) is a nightmare to drive on the street. they are meant to hold power and shift fast not to drive on the street.

 

Thank you. That's what I'm leaning towards. I think Howard is out of town though. I private messaged him a few days ago, and haven't heard back. Do you have a list of what I need to make swap complete? Thanks in advance.

 

Any updates on this? I have the quicktime bell housing and it seems like I'll have to machine the input shaft down a bit to make it work.

 

If you don't like synchro issues, then a T56 is not for you. Although I do understand that there are aftermarket fixes available.

Hacking off the bellhousing with accuracy is VERY COMMON in the domestic world. That is how you put an SFI rated bellhousing on transmissions with integral bellhousings like Powerglides and TH350s. It's done all the time by people of all levels of competence. Follow the instructions and go to it.

I do have a Mazda to Jerico adaptor, and a T56 to old Chevy adaptor (Jerico is Chevy plus a couple), but I haven't scienced out the details yet. Every T56 that I have driven shifted like absolute garbage and this was with low revving piston engines. Mostly I'm waiting for a cheap dogbox T56 or circle track trans to show up on racingjunk

 

I'm getting the list together. I will provide exactly what you need for T56 swap as bolt-on solution with exact parts you will need.

I am waiting until garage cools little on a weekend so I can pull the transmission out to do some measurement. Clutch is going to be streetable Quartermaster twin. Everything you need well under 3k without transmission.

well unforunately, I am just going to take my chances on the T56 syncros and whether it'll shift at 9k. I prefer that over another blown transmission. I also want to do some 1/2 mi event.

Long story short, let me do some actual installation and I will update with what you guys need.

 

I've been running/drifting on a T56 for 4 years on my V8 set up. The last two years have been with 500hp, never hurt the trans once.

It seems like the input shaft is about an Inch too long for the quicktime bell housing kit. And the RZ Tranzilla thing has no information about it, he just says his kit works. I might just machine the input shaft down and go from there.

 

just a little FYI even if you go the adapter plate root you are short about 5/8th of and inch on the input shaft (the thickness of the adapter plate) i found this out the hard way and no one ever said anything about it or i must have missed it but either way im having liberty gear make me one thats longer and stronger

 

Which transmission? There are several different input shaft lengths. I know for certain that a certain Ford input is 13/16s longer than a certain Chevy input, since I was shipped a Chevy-length input trans for a Ford that I was building. The fun part was they both had a Chevy sized pilot bearing not the typical huge Ford pilot.

Just because all T56s have the same boltup doesn't mean they are universal fit...

 

if your going to use a t56 you want either the gto or Fbody style t56 when all bolted up its the only ones that fit in the factory hole

 

also you have to use a gto style shifter for the extra few inches

 

There are a few different F-body T56s. For sure the LT1 and LS1 units have different front plates and I'm pretty sure the input shafts are different lengths.

This, and the LS1 T56 having better internals, are why LT1 units go for only $1500 or so used and the LS1 units are silly expensive to the point where you may as well buy new. Nobody wants an LT1 unit since it only bolts up to LT1 and other small block based engines, and it uses an inferior external slave setup with a clutch fork and sliding throwout bearing.