Before starting my turbo build, I was thinking what I was going to do to have a reliable 6 speed setup with the power I plan on putting down. I had my T56 at the shop, and sold it to buy a nearly new TR6060 for a great price. Fast forward 6 months, and now here we are converting it into my TA.
We currently are not done with the conversion, but will update from here on till it's done. Here in this thread I will let you in on what you need parts wise, and what it's going to take to convert a 2010 SS TR6060 into a 4th gen fbody.
The reason for having to do this conversion is because the TR6060 comes with a plate in the front of the output shaft, and uses an external style shifter which puts the location of the shifter further back from the stock fbody location. Swapping mainshafts to a T56 Magnum mainshaft will allow us to use a slip yoke style driveshaft instead of with the plate (which are prone to breaking), and will put the shifter in the same location as stock. The T56 magnum mainshaft is 31 spline, and about 3 inches longer than a LS1 T56 mainshaft, and will have to be cut (discussed later).
Lets get started...
Parts you will need (I got most parts from thegearbox.org):
- 2010-2011 Camaro TR6060 (has to be from a Camaro since they are mated to the engine, unlike the vette TR6060). (bought used with 3K miles for $1250)
- T56 Magnum mainshaft ($145)
- 1350 31 spline slip yoke PN: SPI-3-3-5431X ($60)
- SSR Tailhousing seal PN: 23049496 ($6)
- SSR Tailhousing PN: 89059986 ($240 from superchevyperformance.com)
- LS1 T56 Shifter Lever ($35)
- McLeod 11" line -4AN to female quick disconnect fitting (pn 139203-11)
- Big pilot bearing (pn 12557583)
- Camaro LS3 style clutch (not sure if you can use LS1 style flywheel, I just bought an RXT for the LS3 camaro that came with the flywheel)
- some fab skills
Here's what the stock TR6060 looks like:
Just as reference, difference in length in stock form, so you all can get an idea...
Doing this swap makes the converted TR6060 a 1/2" longer than a regular LS1 T56. Also, these TR6060s use an internal pump to pump oil on 4th gear, I plan on welding some AN fittings on the case and running a cooler. Another thing to note with these transmissions, is that the bellhousing is mated to the front case. Hydraulics:
You will need to use the slave cylinder that comes with the TR6060. You can use your stock or aftermarket master cylinder as long as it connects to a female T56 quick disconnect fitting. Here is where we use the McLeod line. The TR6060 slave uses a different style disconnect fitting, so to fix this we will be fabbing a piece of aluminum from the slave to a -4AN bung to connect to the McLeod line, then to your master. Simple fix. There are other ways around the hydraulics issue, but this is what I chose to do. Mainshaft swap:
- Unbolt the stock tailhousing
- Start disassembling the stock mainshaft and countershaft (REMEMBER WHERE EVERYTHING GOES, write it down or take pictures if you have to!). Most of the bearings and gears are pressed in, so you will need a puller and a bearing splitter.
- Once you have all that off, you can stand the transmission up, remove the case, and continue to remove the gears from the mainshaft, and remove the shift rails (leave the rest of the countershaft assembled).
Just for comparison (stock T56 input shaft left, TR6060 input shaft right)
T56 Magnum mainshaft left, stock TR6060 mainshaft right:
- Once you have the stock mainshaft completely removed, it's time to re-assemble everything back on the T56 magnum mainshaft just how you took it off.
- all back together (still need to cut the mainshaft, and install the bushing and seal). Tailhousing/ Shifter linkage modifications
This is the yoke you need for the SSR tailhousing: 1350 31 spline yoke
on left, TH400 yoke on right.
New SSR tailhousing on left, TR6060 tailhousing on right.
Swapped out the cluster from the 6060 tailhousing to the SSR tailhousing:
Swapped out sensors from the 6060 tailhousing to the SSR tailhousing:
Test fit new yoke with the new SSR tailhousing in:
Made a rod for the shift rail linkage:
Connected to the T56 shifter lever:
31" from the bellhousing to the shifter stub
Bronze shifter lever cup (optional):
Mill SSR tailhousing shifter pad down .430"
Also, found some push on AN fittings that go into the case so we don't have to weld them on. Now need to order some -6AN hose and fittings, and a cooler. (optional)
2" cut off the mainshaft:
1 1/4" cut off the yoke:
Welded the plate where the shifter linkage was and took out the original shift rod in it:
Pic of it all done... was a fun project. Can't wait to test it out.