How To Install an 8hp70 in a Jeep Wrangler! (JKU)

JEEP WRANGLER JKU 8HP70 DIY INSTALLATION
This video will be my own tutorial on how i swapped out my Nag1 and replaced it with an 8hp70. A special thanks goes to Todd and Liz over at Jeep Speed Shop for providing excellent parts, knowledge and also their own youtube DIY videos. Thanks For watching!
For hemi swap parts, contact JEEP SPEED SHOP (I have no association to JSS) Just a happy customer.
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correct 8hp70s are from a 2013-18 dodge ram 4x4. (be careful they also have 5 speeds in those years)
correct tcase 07-18 manual and 07-11 autos
Tap for oil cooler. Use a 3/4 16 tap
PCS wiring colors. This is for my 2013 wrangler. colors or instructions could vary.
with a new pcs controller from JSS. you only need to tap into the:
CANBUS
battery
keyed power
ground.
Trans plug yellow wire = keyed power
Green with RED tracer = battery power
NAG1 plug wire Yellow(White) with Black tracer = high canbus. attaches to White /red tracer
NAG1 plug wire Yellow(White) with Green(blue) Tracer = Low Canbus. attaches to white w/grey tracer
TORQUE SPECS:
Complete Valve Body to-Case 14Nm/10 ft-lb
TCM to valve body 10Nm/88in-lbs
Plastic Oil Pan to Case 10Nm/88 in-lb
fill plug 22ft/lbs
Bellhousing bolts 41ft/lbs -50ft/lbs (different sources)
Torque Converter to Flex Plate Bolt 31ft/lbs
Tcase to transmission nut 31ft/lbs
Starter 40ft/lbs
fill plug 22ft/lbs
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[@jott5555]

Dude Great step by step.. im getting ready for this swap as well.. Much appreciation!!

[@jku392adventures]

Thank you! Such a fun project 🤙🤙 enjoy it!

[@wademyers6051]

Great video. One question just for clarification, when doing this on a 2007 JKU Rubicon going from the 3.8 V6 and stock drivetrain to a 5.7 hemi and 8hp70 transmission, what is needed to be able to use the stock transfer case?

[@jku392adventures]

@@wademyers6051 thank you, here is the answer to your question hopefully 🙏🤙, if not let me know 🙏
th-cam.com/users/clipUgkxzpuTcFucfFtGoPeZdsV0hUeFXifx7KGB?si=iySVxWXChjNBPqMG

[@mikebiedronski1281]

For my 2020 Wrangler hemi swap, I bought a donor (rollover run n drive) 2020 GC SRT w/the 392 mated to the 8hp70 already. I assume I can drop the whole thing in as is? Thanks for any thoughts.

[@jku392adventures]

We tried using the GC cast headers and they were too big for our project so we used the c300 headers in Eriks jeeps and in my jeep I used 6.1 gc headers.
I'm not sure about the tcase from the GC, are you planning on using that? Or your jeeps tcase?

[@SeanOren-l4p]

Would live to hear an MPG report as well from the swap;)

[@jku392adventures]

Pre swap with the nag1 and 6.4, I was averaging around 11mpg City-ish and 12-13 highway. And now I can easily get 13.5-14 City-ish, and 15.5 highway. When I had the cheap milestars and the 8hp, I was able to get 17.6mpg on the highway. Now I have sst pro 37s. They have a little more meat and weight

[@beachboy4928]

Great work!

[@jku392adventures]

Thank you sir! 🤙🙏

[@beachboy4928]

​@@jku392adventuresDoes the neutral lock out & shifter cable both need to be removed as well if you're keeping the 3.6 pentastar doing the 8 speed swap?

[@jku392adventures]

@@beachboy4928 you would remove that because that would only attach to the nag1 shifter 🤙

[@beachboy4928]

​@@jku392adventures Ok just to confirm both cables need to be removed then?

[@jku392adventures]

@@beachboy4928 I am 99% sure you can remove them both. Just like I did in the video 🤙🤙

[@Alan-f9y9n]

Do you know where I can get the software to view the performance data?

[@jku392adventures]

The easiest way is to download the torque app and get a Bluetooth obd adapter and use your phone. If you want to use your computer you can get HP tuners but you'll need to buy an obd adapter and thats $400 for HP tuners. Using the torque app is probably $25 for the Bluetooth obd

[@Alan-f9y9n]

Perfect, will go that route. Thanks for making this video, I used it as the primary “how to” for installing the 850RE 8 speed to my 3.6 in my 2014 rubicon. Just waiting on a custom Tom woods rear driveshaft since my JE REEL 1310 was too long….@@jku392adventures

[@beachboy4928]

​@@jku392adventuresany certain Bluetooth OBD2 adapter you recommend? Saw one at harbor freight for $55.

[@nejcsmole4169]

Definitely don't use brake switch as power source for 8HP. If anything gets shorted in stop lights circuit and fuse blows, you wont even be able to move. Use reliable fused source directly from battery.

[@jku392adventures]

This is a good point. I was only thinking that the controller won't damage the brake lights, but there's always a chance that the brake light wiring could short out and pop the controller fuse. Good looking out 🤙🤙