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  #1  
Old 03-26-2020, 10:38 PM
cu4whln's Avatar
cu4whln cu4whln is offline
350 Buick
 
Join Date: May 16, 2008
Location: Canton, Mi USA !
Posts: 1,195
'Da Chief : 5.3 Gen V / 6L80 Swap

Finally getting my life back on track and making time to get going on my build again... I picked this one up a few years ago to replace Madness (sold).

Introducing 'Da Chief : 1977 401 auto / Q-Trac. Goal: To build a reliable decent Jeep, not a show car.

[IMG][/IMG]

"The PLAN" : 3 Basic Steps

Step 1:
Swap in a modern drivetrain to tow our old Shasta camper cross country (RT 66) I struggled with tearing up an original "Z" code, but decent sheet metal is hard to find. However, I need total reliability when hauling my wife, dog, and camper on a 6,000 mile 6-8 week trip. Some fuel economy will also be nice.

I plan to focus on getting the drivetrain installed and debugged first. If you don't know, the L83 is a "LT" series Gen 5 - 5.3 L with a 6L80 auto. ( NOT an LS series) There will be a lot of details on this set up.

Why?
Because the 2017 and up Gen V engines are a little more difficult due to the direct injection, VVT, AFM, - fuel challenges.This one came out of a 12k mile rear ended 2018 Yukon XL. 355 hp with 383 ft lbs.

These newer series engines have a TON of stump pulling power due the VVT and direct injection. The auto trans also has a 4.02 first gear and 2 overdrives ( .85 / .67 ). With my current 33"s and the 3.54 ratio, this should work very well.

Step 2:
Get body work done .. prep for paint. one of the possible colors is shown above. (Current color is sand) However, this will most likely be next year as this engine swap is going to be pretty involved and expensive. ( Wife approved btw )

Step 3:
Redo and update the interior. Upgrade to modern seats with adjustability... Build a center console. Eliminate the rear seat as I want more storage and an "Overlander" feel. This will also be a year out .. tons of details to work out.

I have explained to the wife that I basically dug a hole in the back yard to throw money into for the next few years... This will be a 2 year journey I suspect.

Note: Story of when/how I got this Jeep is in a link in my sig. I did a bunch of basic maintenance when I first got the 77.
I always tell my buddies this - Drive your project for a few years BEFORE tearing it all apart. Too often folks start with a ton of ambition.. then time, money, and motivation run out.
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It's not yours 'til ya bleed on it . . .

1977 "401" 'Da Chief
1979 Chero: "Madness" [Sold]
1985 CJ : Renegade -locked and loaded
2001 XJ : Driver 2016 JK 2 door

'Da Chief here: http://www.ifsja.org/forums/vb/showt...ighlight=chief

Round 2- LT Swap: 'Da Chief:
http://www.ifsja.org/forums/vb/showthread.php?t=188457

"Madness" build here:
http://www.ifsja.org/forums/vb/showthread.php?t=89280

Last edited by cu4whln : 06-14-2020 at 09:11 AM.
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  #2  
Old 03-28-2020, 07:28 AM
bkilby's Avatar
bkilby bkilby is offline
350 Buick
 
Join Date: Jan 10, 2016
Location: Burbank Ca.
Posts: 914
Finally.



Have you started gathering parts for the swap yet? Besides the engine and trans that is. When does it go under the knife?
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1974 Cherokee S. It's driving but needs more work. As usual!
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  #3  
Old 03-28-2020, 09:42 AM
cu4whln's Avatar
cu4whln cu4whln is offline
350 Buick
 
Join Date: May 16, 2008
Location: Canton, Mi USA !
Posts: 1,195
Quote:
Originally Posted by bkilby
Finally.

Have you started gathering parts for the swap yet? Besides the engine and trans that is. When does it go under the knife?

Hi Brad ...
Yes, I have the engine/trans/wiring harness/ECU/pedal.

Ordered and have: BJs Gen 5 radiator, Novak adaptor kit to mate a Dana 300 to the 6L80 trans, Novak Gen 5 engine mounts, A PS bracket from ICT Billet and the required Corvette PS pump and pully. Also ordered an oil cooler block off plate.

Researching which of the wiring rework companies to use and reflash the ECU. My learning curve is steep as I don't know GM protocol as well as Chrysler (for some reason ? lol).

Currently working on removing the harness from the powertrain. Some engineer should be PROUD of these connectors. They are a bugger to unlock and remove!

In the next month, hope to clear the workspace and pull the front clip.

First I need to fire up the 401 and take some video as I plan to sell the removed engine/trans/Q-trac.

Good original stuff, 64k miles. Could drop right into a Jeep and drive. I suspect many will want the 401.. maybe not on the turbo 400 and Q-trac with a part time kit. (Local pickup only folks! Detroit MI area) { SOLD }

[IMG][/IMG]

[IMG][/IMG]
__________________
It's not yours 'til ya bleed on it . . .

1977 "401" 'Da Chief
1979 Chero: "Madness" [Sold]
1985 CJ : Renegade -locked and loaded
2001 XJ : Driver 2016 JK 2 door

'Da Chief here: http://www.ifsja.org/forums/vb/showt...ighlight=chief

Round 2- LT Swap: 'Da Chief:
http://www.ifsja.org/forums/vb/showthread.php?t=188457

"Madness" build here:
http://www.ifsja.org/forums/vb/showthread.php?t=89280

Last edited by cu4whln : 04-05-2020 at 09:30 AM.
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  #4  
Old 03-29-2020, 09:39 PM
cu4whln's Avatar
cu4whln cu4whln is offline
350 Buick
 
Join Date: May 16, 2008
Location: Canton, Mi USA !
Posts: 1,195
Started cleaning out a work space in the garage.. and looking at parts.

[IMG][/IMG]

The soon to be removed 401

[IMG][/IMG]

One of the issues with a Gen 5 LT are the mounts. I first bought a set from BJs for an LS. Was hoping they would work. Nope. Turns out the great "bolt on" set made for the LS are not going to work.

The Gen 5 LT engines have a different block bolt pattern as well as being moved to a new location. So, I contacted Novak, and they said yes.. they have a set that works for SJs and a Gen 5 engine. They don't advertise them - yet?

Great, ordered them.. NOT a bolt on, they are more like a "universal" mount. So this means locating the engine by trail and error, than weld the frame brackets on. Hmm, no welder at the house.. and no 220 in the garage. I am thinking I can temporarily use self tapping screws and get things located.

Then take it to a buddies for welding. Here is a pic of the mounts.. I really like the bolt on one.... would be so much easier.

Top are the gen 5 origami jig saw puzzle mounts ...
Below are the LS bolt on mounts. So much easier.

[IMG][/IMG]

[IMG]
[/IMG]
__________________
It's not yours 'til ya bleed on it . . .

1977 "401" 'Da Chief
1979 Chero: "Madness" [Sold]
1985 CJ : Renegade -locked and loaded
2001 XJ : Driver 2016 JK 2 door

'Da Chief here: http://www.ifsja.org/forums/vb/showt...ighlight=chief

Round 2- LT Swap: 'Da Chief:
http://www.ifsja.org/forums/vb/showthread.php?t=188457

"Madness" build here:
http://www.ifsja.org/forums/vb/showthread.php?t=89280

Last edited by cu4whln : 03-29-2020 at 09:51 PM.
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  #5  
Old 03-29-2020, 11:19 PM
SJTD SJTD is offline
350 Buick
 
Join Date: Apr 26, 2012
Location: Lompoc and Sunland, CA
Posts: 1,441
Do those mounts have a bolt that goes all the way through the rubber?
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'84 GW with Nissan SD33T, early Chev NV4500, 300, narrowed Ford reverse 44, narrowed Ford 60, SOA/reversed shackle in fornt, lowered mount/flipped shackle in rear.
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  #6  
Old 03-30-2020, 03:28 AM
bkilby's Avatar
bkilby bkilby is offline
350 Buick
 
Join Date: Jan 10, 2016
Location: Burbank Ca.
Posts: 914
Seems like you should be able to use these adapters along with the LS mounts for the SJ, no? No cutting and welding...


https://www.ictbillet.com/ls-to-lt1-...er-plates.html


https://www.bjsoffroad.com/Bolt-In-L...ts_p_1880.html
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1974 Cherokee S. It's driving but needs more work. As usual!
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  #7  
Old 04-01-2020, 07:29 AM
cu4whln's Avatar
cu4whln cu4whln is offline
350 Buick
 
Join Date: May 16, 2008
Location: Canton, Mi USA !
Posts: 1,195
Quote:
Originally Posted by SJTD
Do those mounts have a bolt that goes all the way through the rubber?

Sorry I missed this question ...

Yes, they have a bolt that goes through... the frame side bracket has a sized hole for the shoulder on the "upper" rubber bushing to locate it.

Then the bolt with a large washer squeezes the upper / lower rubber together.

Both sets have the same rubber mount btw.
__________________
It's not yours 'til ya bleed on it . . .

1977 "401" 'Da Chief
1979 Chero: "Madness" [Sold]
1985 CJ : Renegade -locked and loaded
2001 XJ : Driver 2016 JK 2 door

'Da Chief here: http://www.ifsja.org/forums/vb/showt...ighlight=chief

Round 2- LT Swap: 'Da Chief:
http://www.ifsja.org/forums/vb/showthread.php?t=188457

"Madness" build here:
http://www.ifsja.org/forums/vb/showthread.php?t=89280
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