It appears that the TKX and T5 mount pad to main shaft centerline is significantly different, but I'm having a hard time finding the third gen T5 dimension. Hawk's includes the T5 torque arm relocation crossmember in their TKX conversion kit and I'm thinking it locates the TKX poorly. I initially measured a -4 degree trans/engine angle and 0 degree pinion angle (with the torque arm at the upper-most adjustment). I've used a taller transmission mount to reduce this to -3 degrees, but I feel like there's now too much flex in the mount under heavy acceleration. My belief is that the crossmember should locate the mount higher, but I would like to verify the T5 dimension before altering anything.

 

Did you figure out what you needed?

 

Yes, I wound up using an aluminum spacer between the transmission mount and crossmember to reduce the angle.

 

I was thinking the same thing. I suppose the raised mount pad could be useful for double hump style crossmembers for exhaust clearance.

Did the mount end up being in the same location forward/back as the T5 or did you have to elongate the hole in the crossmember? I have my tkx in a box. Was going to start it this week, but fixing a head gasket issue now..

 

Not sure if you're asking this, but the transmission crossmember provided by Hawks is quite different from the OEM T5/700R4 crossmember. Stock crossmember will not work with TKX. The mount hole in the Hawks crossmember did line up fine with the TKX, but I don't know precisely which mount they supply with the TKX swap kit.

 

I know the tkx is a little different dimentially from the tko but tye biggest issue with the tko was the height of it. It's hits the top of the tunnel before the pinion angle is anywhere ideal. I cut the top of the tunnel and raised it almost an inch at the back to be able to raise the transmission.

 

The TKX solves that. The TKX is basically a TK0 gear set and main shaft inside a T45 case with a mid plate. It's actually more similar to the Keisler transmission was. We had it completely apart on the bench last week checking it out.

So the mount pad centerline to transmission face according to the documentation is 15-7/8"

The T5 mount pad centerline to transmission face is 15-3/4". So I'd assume you could just slot the crossmember a little bit, and use the same crossmember. I don't understand why you need a different crossmember. (but I'm doing head gaskets right now so I haven't actually tried yet). especially since the mount pad is shorter (closer to transmission centerline) on the TKX, requiring a shim, you'd think there was no way the case could contact the factory crossmember.

-- Joe

 

The TKX has no provision for torque arm. Aftermarket transmission mount does. I guess there are other ways to get the torque arm taken care of, but the aftermarket transmission mount takes care of this.

 

Oh, I'm running a totally different torque arm setup. My arm is about half as long as stock and mounted to a pivot in the transmission tunnel.