Green Yj 6.0 Motor Swap - Pirate4x4.Com : 4x4 and Off-Road Forum
 
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Old 09-28-2016, 07:58 AM   #1 (permalink)
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Green Yj 6.0 Motor Swap

The guys at Motobilt killed it on building a great suspension and cage for my Green Yj. The atlas, 5:38s and Stock 4.0 have been working hard for awhile but is time for mo power. 6.0 and Th400 swap here we go at the house.

Before the swap

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Out with the old 4.0

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Old 09-28-2016, 08:05 AM   #2 (permalink)
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New Parts coming in

6.0 LQ4 with babyshit yellow fan. This is out of a 3500 Express Van which is good because the adjustable fuel pressure right on the top of the motor and also the longer wiring harness to computer in fans compared to trucks (if you want to mount the comp in the cab.

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New TH400 and just slapped on a Advance adapters adapter to run the Atlas behind the TH400.

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Put a new flexplate and crank spacer to run the Th400 behind the 6.0

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Old 09-28-2016, 08:56 AM   #3 (permalink)
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Novak ls swap radiator and ls engine mounts

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Tacked in the mounts for a test fit

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First go ,no tranny just to see how many challenges may arise

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Old 09-28-2016, 08:59 AM   #4 (permalink)
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Headers, upper link and starter are going to be a party

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Workable (note engine not plumbed in the test)

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First Radiator check looks good.

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Last edited by usethis; 09-28-2016 at 09:00 AM.
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Old 09-28-2016, 09:03 AM   #5 (permalink)
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All in all everything clears really well but now need to pull everything and reinstall with tranny to figure new tranny cross member and fab that up. Also will assemble TC, tranny and engine to finish torque spec. Also time to clean and paint the engine.
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Old 09-28-2016, 09:06 AM   #6 (permalink)
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New 32 spline input for the 23 spline jeep atlas. (Outputs are already 32 spline).

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Old 09-28-2016, 09:07 AM   #7 (permalink)
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New PSC steering pump for ls engine with full hydro. Previous jeep one for sale here https://www.pirate4x4.com/forum/misc-...-psc-pump.html


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Last edited by usethis; 09-28-2016 at 09:09 AM.
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Old 09-28-2016, 09:10 AM   #8 (permalink)
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Test fit with trans was good, I burned in the engine mounts for good.

[IMG][/IMG]
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Old 09-28-2016, 09:14 AM   #9 (permalink)
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6.0 cleaned up and going in for the final time (3rd). GFetting over some big hurdles.

[IMG][/IMG]

Finished fabrication on the tranny mount. Motobilt bellypan will still bolt up underneath. Atlas fit will be tight, may need to cut the floor.

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Old 09-28-2016, 09:17 AM   #10 (permalink)
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Engine and tranny fully installed. Here is a shot of the rad clearance. Shot is not a great angle but about 3/4-1.0" between water pump snout and fan motor. I can grind/file a little of the water pump snout if needed but prefer not to gank the threads if not necessary (for removal down the road).

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Steering reservoir in but also a little tight. May need to file a little.

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Old 09-28-2016, 11:17 AM   #11 (permalink)
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Next I need to fit up the atlas and get shifters figured out for the t case and th400 (already have an art carr). Then driveline adjustments.
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Old 09-28-2016, 03:01 PM   #12 (permalink)
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Everything looks great! You'll be fine with your water pump to rad fan clearance. Mine is about the same and I haven't had any issues. I see you're using Sanderson headers and wanted to make sure you have some flex built into your exhaust setup. I've went thru 3 sets of those headers (first was a bare set and they rusted out, fast). I had a well known shop install my entire exhaust and after I had it back for a while something didn't seem right. They forgot to tighten down the collector bolts and now I have a leak on both sides there. They didn't want to go back and fix it so I've dealt with it until I get it built right. Something to keep in mine when you have it going all together.
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Old 09-29-2016, 04:36 PM   #13 (permalink)
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Thanks for the feedback @matts88yj I will certainly have some rubber hanger isolators and maybe flex line in the exhaust. Good to have in a jeep where things get "kissed" by rocks from time to time. Can't be hot and rigid when that happens

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Old 09-30-2016, 07:37 PM   #14 (permalink)
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Old 10-04-2016, 08:37 AM   #15 (permalink)
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I got a lot done last night. New pulley on the psc pump and belt. Got the fuel cell reinstalled, mounted the Ls computer. Lastly got that fat atlas into a small space. No body lift on this right to I had to cut the floor and Massage with a sledge. Fits good though and pretty flat. The motobilt skid plate will fit up perfect. Front driveline looks good too.



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Old 10-04-2016, 03:22 PM   #16 (permalink)
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It will be interesting to see if you need to run a 2 piece front shaft or not.

I know on mine, TBI 350, Dana 300 TH350 with Dans 4 link kit, a 2 piece is needed.

Also, Mini starters clear the upper link.
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Old 10-04-2016, 07:37 PM   #17 (permalink)
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Old 10-05-2016, 12:25 PM   #18 (permalink)
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It will be interesting to see if you need to run a 2 piece front shaft or not.

I know on mine, TBI 350, Dana 300 TH350 with Dans 4 link kit, a 2 piece is needed.

Also, Mini starters clear the upper link.
I looks like I wont need a two piece front. I am not sure about exhaust routing from the drivers side header. I will have to get real creative there.
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Old 10-05-2016, 12:25 PM   #19 (permalink)
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Nothing of value to add except....ROLL TIDE!!
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Old 10-05-2016, 08:15 PM   #20 (permalink)
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I got a lot done last night. New pulley on the psc pump and belt. Got the fuel cell reinstalled, mounted the Ls computer. Lastly got that fat atlas into a small space. No body lift on this right to I had to cut the floor and Massage with a sledge. Fits good though and pretty flat. The motobilt skid plate will fit up perfect. Front driveline looks good too.



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Interested to see if your power steering pulley wobbles any. Just put a psc pump in my TJ, and it has noticeable wobble. I spoke with PSC and they said this is normal. Pump runs great, it's just a little unnerving seeing how much it walks

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Old 10-07-2016, 12:29 PM   #21 (permalink)
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Nice work, what is your clearance from the ground to the bottom of your sub-frame?
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Old 10-09-2016, 07:56 AM   #22 (permalink)
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Will check @akecj7

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Old 10-09-2016, 07:56 AM   #23 (permalink)
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I got another good chunk done yesterday. Got the cooling system flushed on the v8 and ready to plumb and fill. Got the air intake done with maf sensor wired.


Also got the twin sticks in for the shifters. Plumbed the tranny lines and cooler. Grill wiring back in and bumper/winch on.


Next I will build a new floor and get the Winters shifter install. Then wiring and engine bay beautification

First time outside in weeks



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Old 10-12-2016, 08:27 AM   #24 (permalink)
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Anyone know where I can get a short radiator hose with 1.5 ends but most importantly need about a 110 degree bend in it. Tried a short flexible hose but get to kinky at the bend even with a spring. Would rather not cut down a 180 but need something. Length has to 6-8 inches. Thoughts?

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Old 10-13-2016, 08:55 AM   #25 (permalink)
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Nice!! I'm betting you'll love the new motor!
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