Offset Rear End with Centered T-case output. (1 Viewer)

[Jackson Hanes]

I want some input on the matter.

I am putting in an SM465, and ditching my 4-speed t-case.

So I'm looking to mate an NP205 to the sm465.

And that poses a challenge; can I run an NP205 without swapping the rear end?

I will mostly be driving on the street so I want it to be streetable without noticeable downsides.

 

[Firemedic831]

So i run a Centered Rear Diff with a Offeset Orion t-case and have zero issues . In fact the early Cruisers had a driveline that was like / also

 

[pb4ugo]

I run a center rear output tcase, I centered the stk 40's rearend too. I got the idea from the link below. You'll likely have to deal with the tube rear crossmember. Keep in mind the output will be higher, so you have to deal driveshaft angle vertically too. Trans and tcase length is something to consider. I'm curious why you would want to do such a swap and not really wheel it?

FJ40/minitruck hybrid rear axle- Land Cruiser Tech from IH8MUD.com

Windshield/Glass Installation - Land Cruiser Tech from IH8MUD.com

www.ih8mud.com

 

[Living in the Past]

When Toyota started the FJ40 it has a centered rear diff with an offset output from the transfer case. Have the frame information on the FJ40 and FJ45 when the offset diff started. Easier to add one of verses the mini with the smaller diff.

 

[Hilndr1701]

I’m thinking about doing this as well. I’m getting an NV4500 and it would be easier and cheaper to run an NP205 behind it.
Are there any pictures of someone who runs an NV4500 with an NP205 with the offset axle?
I have a 1968FJ 40 with a Chevy 350 and soon to be NV4500

 

[peesalot]

given enough wheel base it's doable.

 

[Firemedic831]

I’m thinking about doing this as well. I’m getting an NV4500 and it would be easier and cheaper to run an NP205 behind it.
Are there any pictures of someone who runs an NV4500 with an NP205 with the offset axle?
I have a 1968FJ 40 with a Chevy 350 and soon to be NV4500

The down side to a 205 is the gearing Unless you get a set of the lo max gears . but at that point i would just run a Orion Or a Atlas

 

[pb4ugo]

Keep in mind the output shaft is a bit higher on center rear output tcases. With a nv4500 I'd want a short tcase and adatper. I'm not sure what you're building, but I'd consider a dana 300. I seem to recall it might only need a clocking ring.

I run a sbc, sm420/Dana 20. The 420/dana is about as long as a stk 40 4speed and tcase. I did the centered 40 rear. I flipped the rear springs and some other stuff for more room and a better angle. I didn't want to run a double cardin joint.

 

[Downey]

Been out of the loop for awhile, but back in the day there were reports that the off-set problem caused vibrations/noise at highway speeds.

 

[pb4ugo]

My other 40 has an SBC ,NV4500 and the stk 1 piece 40 case and works fine but low range could be more. . I've been considering eventually going to a split case, which I've read is a little more robust and has lower gearing choices than the 1 piece case. This will allow me to keep the offset rearend and get a better crawl ratio.

 

[Firemedic831]

My other 40 has an SBC ,NV4500 and the stk 1 piece 40 case and works fine but low range could be more. . I've been considering eventually going to a split case, which I've read is a little more robust and has lower gearing choices than the 1 piece case. This will allow me to keep the offset rearend and get a better crawl ratio.

Why not just put a Orion in

 

[muskokajames]

Been out of the loop for awhile, but back in the day there were reports that the off-set problem caused vibrations/noise at highway speeds.

Been out of the loop for awhile, but back in the day there were reports that the off-set problem caused vibrations/noise at highway speeds.

Hey Downey! I found you in the forum, I’m assuming this is the Downey that created the th350 to top load Toyota transfer case (21 spline). I actually have an off topic question about the adapter, I noticed both plates are threaded for the 4 large bolts that mate the two plates together, I can’t find a ring seal for between the plates, would it be okay to use silicone gasket maker in place of that seal to seal between the plates?
I appreciate it and apologize for highjacking the thread for this question.
Thanks
James

 

[Downey]

Yep, silicone sealer perfect!!!!!

 

[FJ40RobQ]

I’m thinking about doing this as well. I’m getting an NV4500 and it would be easier and cheaper to run an NP205 behind it.
Are there any pictures of someone who runs an NV4500 with an NP205 with the offset axle?
I have a 1968FJ 40 with a Chevy 350 and soon to be NV4500

how are you adapting the NV4500 with the NP205? I heard there is a spline difference and you need to use an adapter. I’m considering the same set up and will be interested in how yours turns out.

 

[Grayscale]

What about a parking brake with the NP205? I've seen an aftermarket disc brake for the driveshaft, and they apparently have those servo-hydraulic types that tie into the existing hydraulic brake circuit?

The Double-Cardan driveshaft requires that the pinon flange be perpendicular to the driveshaft, so that could upset one variation on the NP205 to the LC rear axle. A double-U-joint scenario, like what came from the factory, needs to be as straight as possible, especially with suspension lift, but, you'll want to measure it to really know how steep the u-joints will be with the combined lift, and NP205-placement.