Tremec 4050 install
 

Has anybody done a Tremec 4050 install into a K model pickup? Silver Sport has put together a kit that will convert your truck to a manual shift retaining the NP205 Transfer Case. Has anybody on this forum done this conversion and if so, how did it go? They have quoted me over 6000 dollars for the complete kit. Pricey conversion but there is a lot to swap if you are starting with an automatic. Thanks, Jack

Re: Tremec 4050 install
 

Interesting...not sure if it's over $6000 interesting , but that would be sweet...high torque rating, low 1st..
I dont recall seeing one done..

Re: Tremec 4050 install
 

Curious what they are using to convert the 205 so it will bolt on. Different output? conversion sleeve?

Re: Tremec 4050 install
 

looks like they use advanced adapters...
https://myemail.constantcontact.com/...id=9w06GzTRp_8

Re: Tremec 4050 install
 

Not sure. I have looked at a couple of conversions I can't remember which ones required what without revisiting them. I just swapped my TH350 for a 700R4. There was quite a few issues to deal with to make it fit but I eventually got them worked out. That required a sleeve. It turned out to be a nice clean install, but I just can't get used to an automatic. It feels sloppy and loose to me. Maybe I will get used to it.

Re: Tremec 4050 install
 

Did you end up installing the Tremec 4050? I'm interested in this as well. Wondering how involved it is. TYIA.

We are finishing up installing the tr4050 in my 72 k20 suburban with an np205. Since we have 4 kids and a lot of other projects, it’s taken us since December to get to the last step. It is involved, but not difficult.
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Re: Tremec 4050 install
 

OHH I want to see some pics of that!!!

Re: Tremec 4050 install
 

The truck was originally a 4 speed manual that someone put a 700r4 into. It also has a 90’s crate 383. Silver Sport was great to work with, and we only got sent 1 wrong part, which they quickly shipped the correct part (flywheel) even though we didn’t start on the project until 6 months after receiving the kit. We had to replace the adapter on the transfer case, and the input shaft, as the adapter for the 700r4 obviously does not work. The kit comes with the adapter, we had to purchase the correct spline input shaft. There are a few great videos on YouTube for this process. It’s not bad. We went with the hydraulic clutch, and while we were there, upgraded to Baer MC for the brake system, switched out the CPP automatic column to a Flaming River tilt manual column, and replaced the steering box to a quick ratio. Some of the hardest bits we’re dealing with the weight of the np205, that sucker is heavy! The shifter moved closer to the transfer case shifter than stock, so I found a Jeep double shifter boot. It looks like it will fit fairly well. We are currently at the step to bleed the clutch, and do the engine on test. It’s been a long wait, and I can’t wait to drive it. I will update when we are complete.
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Re: Tremec 4050 install
 

old 700r4, Tremec from inside, hydraulic clutch pedal, hydraulic clutch MC, jeep shifter boot.

Re: Tremec 4050 install
 

Underneath: Transfer case mount, new position. not sure where the stock position would be as we bought this truck with the 700r4 installed. Tremec adapter, transmission and bell housing, mini starter. We also had he drive shafts resized and are adding Ruffstuff disc brakes to the back!

Re: Tremec 4050 install
 

And, the "purple truck", which hopefully wont be this awful color very much longer.

Re: Tremec 4050 install
 

Very nice write up and pics!
What color are you going with for the beast?

The original color was yellow, but I have had my eye on the Summit Racing flat olive drab green. We still have to fix the rusted rockers and do a bit of body work before that project. I think I’ll drive it a while, too!
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Re: Tremec 4050 install
 

cool ol burb..!!..my G-dad had one that was dark green..always been a favorite color of mine.
very interested in a 40/50 now that ive had time to research them more..
i just wish they would hurry up with the 2wd version ...SS said it would be released last yr, but its still not available as of yet
how much angle do you have you output set to? ( 1st pic in post 11)..it may just be the picture but it looks kinda extreme

I think we measured a 3 degree working angle at the u-joints, the case looks really angled, but where the drive shafts connect are not that extreme. Also, it might look weird because my phone was at a weird angle to get around exhaust and the frame when taking pictures.
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Re: Tremec 4050 install
 

What adapter kit did you use between the Tremec and NP205? I need something like the cylinder portion of that adapter to mount up to my GM NP205. Awesome rig!

Re: Tremec 4050 install
 

We bought the kit from Silversport, and it came with an Advanced Adapters adapter. We had to change the output because the previous owner converted my truck from manual to auto with a 700r4. I would not recommend the Silversport kit, I actually don’t think they had sold one before we bought it. We had a lot of re-working to do on the clutch pedal slave cylinder (ended up with a complete pedal kit from AA, and it is awesome!), had to have a machine shop make a special shim for the hydraulic clutch, and a few other things. The transmission is fantastic. Shifts great.