Jeff 98XJ WI
NAXJA Forum User
- Location
- Butternut, WI
I thought I would start another thread dedicated to installing a GM 5.3L/4L60E/Klune/Stak 300 Replace a Case in my MJ. I do not yet have an engine, but I do have the other major components. Here is a shot of them bolted together with a driveshaft layed out for eying up clearances.
The tape measure says the tranny with an Advance Adapters output is 25.5" long from bell housing to Klune mounting face and 32" to the end of the Klune.
The length compares to an AW4 length of 25 3/8" (according to Novak and confirmed by rough tape measure by me) from bell housing to end of tranny adapter. So they are about the same length. A rough measurement of a 231 with slip yoke adapter was about 15" from mounting face to rear u-joint center line. The Klune/Stak 300 measures 18" from mounting face of the Klune to the center of the rear u-joint using a stock rear output.
However, it's the shape of the t-case that determines where it will fit more so than the overall length. I've not been able to set my setup right next to a stock setup, but comparing to a stock setup in a Jeep, it looks like the 231 has a length of about 10" from the mounting face to the back of the case behind the front output. The Klune/Stak 300 is about 12". Also, the Stak has that shifter housing that is on top of the case and extends back another 3.5". I believe the additional length of the rear of the case and the shifter housing is going to cause interference with the body tub. I won't know this for sure until I am able to bolt the setup to the engine and trial fit it in place though.
The below shot shows the profile of the back of the case with the shifter housing.
The below shot shows the overall length of the combination to the end of the shifter housing (41"):
Also, installing shifters may be a problem. I was thinking of using cables and running them in from the back of the transfer case passing just over the top of the case and operating the shift rails from behind. Northwest Fab mentioned that they had a kit to do this although I haven't seen pics. Clearance for the shift cables may be an issue though since I forsee clearance issues for the shift box itself!
I would like to install a 3 link upper link mount in the tranny tunnel coming up from the tranny crossmember between the driveshaft and the Klune. That's going to take some careful planning!
The below shot shows a possible clocking arrangement for the Stak case:
I adjusted the Klune case halves to position the center Klune shifter location vertically in line with the tranny centerline as seen below:
The Advance Adapters 4L60E to 23 spline Dana t-case adapter has a very low hanging mounting foot as seen below:
One can also see the Klune mounting foot in the pic below:
I plan to update this thread as I get more done and/or run into problems. Jeff
The tape measure says the tranny with an Advance Adapters output is 25.5" long from bell housing to Klune mounting face and 32" to the end of the Klune.
The length compares to an AW4 length of 25 3/8" (according to Novak and confirmed by rough tape measure by me) from bell housing to end of tranny adapter. So they are about the same length. A rough measurement of a 231 with slip yoke adapter was about 15" from mounting face to rear u-joint center line. The Klune/Stak 300 measures 18" from mounting face of the Klune to the center of the rear u-joint using a stock rear output.
However, it's the shape of the t-case that determines where it will fit more so than the overall length. I've not been able to set my setup right next to a stock setup, but comparing to a stock setup in a Jeep, it looks like the 231 has a length of about 10" from the mounting face to the back of the case behind the front output. The Klune/Stak 300 is about 12". Also, the Stak has that shifter housing that is on top of the case and extends back another 3.5". I believe the additional length of the rear of the case and the shifter housing is going to cause interference with the body tub. I won't know this for sure until I am able to bolt the setup to the engine and trial fit it in place though.
The below shot shows the profile of the back of the case with the shifter housing.
The below shot shows the overall length of the combination to the end of the shifter housing (41"):
Also, installing shifters may be a problem. I was thinking of using cables and running them in from the back of the transfer case passing just over the top of the case and operating the shift rails from behind. Northwest Fab mentioned that they had a kit to do this although I haven't seen pics. Clearance for the shift cables may be an issue though since I forsee clearance issues for the shift box itself!
I would like to install a 3 link upper link mount in the tranny tunnel coming up from the tranny crossmember between the driveshaft and the Klune. That's going to take some careful planning!
The below shot shows a possible clocking arrangement for the Stak case:
I adjusted the Klune case halves to position the center Klune shifter location vertically in line with the tranny centerline as seen below:
The Advance Adapters 4L60E to 23 spline Dana t-case adapter has a very low hanging mounting foot as seen below:
One can also see the Klune mounting foot in the pic below:
I plan to update this thread as I get more done and/or run into problems. Jeff