81 Cherokee laredo 5.3L swap

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Topic author
2500HD
Posts: 19
Joined: Sat Aug 18, 2018 6:07 pm

81 Cherokee laredo 5.3L swap

Post by 2500HD »

Picked up this Cherokee with 2 spun bearings. I replaced the bearings but it still had a bad knock and no power.Image
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So in come a donor. It's a 2000 yukon xl with a 125k 5.3L 4l60e np246 transfer case.Image

Topic author
2500HD
Posts: 19
Joined: Sat Aug 18, 2018 6:07 pm

Re: 81 Cherokee laredo 5.3L swap

Post by 2500HD »

Tearing out the new engine.Image
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Little setting sun for the old 360 Image
Front clip offImage
Out with the 360 and tf727 np208 Image
Clean slate Image

Topic author
2500HD
Posts: 19
Joined: Sat Aug 18, 2018 6:07 pm

Re: 81 Cherokee laredo 5.3L swap

Post by 2500HD »

Mocking up the mountsImage
Mounts made.Image
Fits like a glove!Image
Since then i have made the trans mount and attached the np246. Everything is fitting like it was made for the Cherokee. Even the front driveshaft was the correct length!

rocklaurence
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Re: 81 Cherokee laredo 5.3L swap

Post by rocklaurence »

Wow! Great prgress and keep the pictures coming..

rocklaurence
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Re: 81 Cherokee laredo 5.3L swap

Post by rocklaurence »

Wow! Great prgress and keep the pictures coming..

Topic author
2500HD
Posts: 19
Joined: Sat Aug 18, 2018 6:07 pm

Re: 81 Cherokee laredo 5.3L swap

Post by 2500HD »

I actually like the wiring and depinning the ecm. I should have my stand alone fuse block tomorrow and then i can solder the splices together and wiring will be basically done.
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Topic author
2500HD
Posts: 19
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Re: 81 Cherokee laredo 5.3L swap

Post by 2500HD »

Got started on the exhaust and buttoned up almost all the wiring. Might try and start it next weekend.
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rocklaurence
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Re: 81 Cherokee laredo 5.3L swap

Post by rocklaurence »

I dont see any Cats? Will you be able to delete them n the programing?

Topic author
2500HD
Posts: 19
Joined: Sat Aug 18, 2018 6:07 pm

Re: 81 Cherokee laredo 5.3L swap

Post by 2500HD »

As far as I know cats don't affect programming. But I am deleting the rear o2 sensors with hp tuners.
As a side note. I didn't give enough clearance to the front driveshaft so I'm going to have to address that. I only have 2 inches right now. Whoops.

Topic author
2500HD
Posts: 19
Joined: Sat Aug 18, 2018 6:07 pm

Re: 81 Cherokee laredo 5.3L swap

Post by 2500HD »

Had to fix it. Now it's closer to 5 inches.
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Cheapthrills
Posts: 632
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Location: Sedalia colorado

Re: 81 Cherokee laredo 5.3L swap

Post by Cheapthrills »

Very nice .... I started working on my harness today, for my gen4 lc9. Kinda wish I would have went with the lm7 it would have been simpler

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Cheapthrills
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Location: Sedalia colorado

Re: 81 Cherokee laredo 5.3L swap

Post by Cheapthrills »


Topic author
2500HD
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Re: 81 Cherokee laredo 5.3L swap

Post by 2500HD »

Lots to finish up but after fixing a leaking injector she fired right up! On the home stretch now!
https://www.facebook.com/1357421975/vid ... 765662719/
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Topic author
2500HD
Posts: 19
Joined: Sat Aug 18, 2018 6:07 pm

Re: 81 Cherokee laredo 5.3L swap

Post by 2500HD »

Cheapthrills wrote:Very nice .... I started working on my harness today, for my gen4 lc9. Kinda wish I would have went with the lm7 it would have been simpler

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Yeah, you have alot more to deal with. The lm7 is pretty basic.....Luckily!

Topic author
2500HD
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Re: 81 Cherokee laredo 5.3L swap

Post by 2500HD »

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I hope to have the lift kit and tires here by friday and on by the end of the weekend.

1979bettywhite
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Re: 81 Cherokee laredo 5.3L swap

Post by 1979bettywhite »

Awesome stuff. Which kit are you going with? Mine took me a weekend basically. But that was a couple of 8-10 hour days. Lots of cutting of old bolts, cussing, cutting some more old seized bolts, more cussing, less skin, a 4x4 post and ratchet straps, cutting some more old bolts, and finally mounting balancing and installing tires.

Topic author
2500HD
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Joined: Sat Aug 18, 2018 6:07 pm

Re: 81 Cherokee laredo 5.3L swap

Post by 2500HD »

1979bettywhite wrote:Awesome stuff. Which kit are you going with? Mine took me a weekend basically. But that was a couple of 8-10 hour days. Lots of cutting of old bolts, cussing, cutting some more old seized bolts, more cussing, less skin, a 4x4 post and ratchet straps, cutting some more old bolts, and finally mounting balancing and installing tires.
I went with the rough country. I know it has mixed reviews but the price for the skyjacker is ridiculous and i refuse to pay 200 for shipping for rusty's. I figure it will be good enough till i upgrade shocks in a couple of years. It's gonna be a daily driver and not do much if any wheeling.
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243
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Location: Texas

Re: 81 Cherokee laredo 5.3L swap

Post by 243 »

It's amazing how fast some of ya'll can work!
1978 Cherokee NT, 5.3/4L60/NP241 in Progress

Topic author
2500HD
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Joined: Sat Aug 18, 2018 6:07 pm

Re: 81 Cherokee laredo 5.3L swap

Post by 2500HD »

243 wrote:It's amazing how fast some of ya'll can work!
Thanks, I would have been farther along but i spent 2 days figuring out the push button np246 transfer case. Luckily Jake clued me in that i needed the actuator from the donor front axle. It's funny how well the 5.3 fits. I didn't even have to do anything to the yukon front driveshaft. Put in a conversion ujoint and was done. I cut and welded the rear driveshaft myself and didn't have to rebalance it. I think i got lucky!

Topic author
2500HD
Posts: 19
Joined: Sat Aug 18, 2018 6:07 pm

Re: 81 Cherokee laredo 5.3L swap

Post by 2500HD »

3 inch lift and 33/12.5/r15 tires. My driveline angle from trans to driveshaft is not good so i thing i'll just go cv and call it good.
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