Wrapping up a 5.3 swap

[lagoober]

Hey all, I'm trying to wrap up a 5.3 swap in my xj and it looks like the anti-theft / VATS system is not allowing my engine to stay running. Does anyone know of a local tuner or someone with the ability to just disable this piece in the PCM? By local, I mean somewhere between corona/norco and santa fe springs along the 91.

Thanks!

 

[GrimmJeeper]

googled up this, its about a 240 swapping an LS in but check out the procedure at the bottom of the page http://www.240-sx.com/bypassing-vats-on-ls1-for-240sx-swapping/

 

[lagoober]

Thanks Grimm! I saw mention of the 30 minute trick, but just never got around to doing it. I figured a tuner would ultimately be the way to go for a few other adjustments as well. But i'm getting anxious to hear this thing purr, so I think I'll give it a go tonight. After all, it technically is a silverado sitting in my XJ at this point, so hopefully it works. If it does....then I button everything up and see if I can light up all 4 corners lol

Thanks again for taking the time out.

 

[GrimmJeeper]

:thumbup:

 

[GrimmJeeper]

check out the threads in the street and performance forum there have been a few great LS swaps with detailed build threads.

I want to see it when you're done, lol.

 

[lagoober]

I can't wait for it to be done! Just hearing the thing turn over and fire with open headers is badass! It only runs for a second and dies out, but damn its cool.

The 30 minute thing didn't work, but it is likely my timing was bad. My brother has a programmer, so I'm seeing if I can add my vehicle to it. That way, I can make adjustments as needed without having to see a tuner every time.

 

[cracker]

this is a smart swap.....I am surprised more don't go down this path. :thumbup:

 

[lagoober]

A little progress after getting the anti-theft system disabled in the PCM.

https://www.facebook.com/jef.lagueux/videos/1357097934318456/

 

[xjrick94]

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Sounds like your post is private.

 

[lagoober]

my bad, sorry about that....fixed now.

 

[xjrick94]

That sounds good! open header? Did you also have the swap out the trans and transfer case?

 

[lagoober]

That sounds good! open header? Did you also have the swap out the trans and transfer case?

Thanks! Yep, open headers at the moment. the engine I found came with a 4l60e transmission, np241 transfer case and another transfer case thrown in. so I put the entire setup in the xj. waiting on the sye from jbconversions for the rear. I'm getting close!

 

[the_midwesterner]

what are you doing for exhaust/downpipe?

 

[lagoober]

what are you doing for exhaust/downpipe?

Still working through some of those items. I was going to fab up my own long arm with clearance for the exhaust up both sides of the tranny, but for time sake, I went with a kit.....which shot my clearances all to hell. I'll probably end up routing it between the rear of the oil pan and bell housing. The headers I have in there are Hooker 8501, which are supposed to be "stock like replacements", they just hug the block a bit more (figured this might help with state referee). Both sides dump to the rear. The engine also sits a little lower than most of these swaps because I wanted to fit the truck intake under the hood so I made my own mounts. It is tight and I might need a very small cowl for a little breathing room, but the hood will close as it stands.