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Old 04-17-2014, 10:14 PM   #571
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Good luck! The most valuable suggestion to doing this whole swap would be to save save save your money, and buy an e-rod engine from chevy performance. It will come with everything you need to make your engine pass inspection. Then buy yourself a new trans and new transfer case.

You'll end up spending probably $10,000 or more, but you'll have a warranty on everything and you know everything was built right. I know, it's not NEARLY as "fun" as my path, but I would imagine it would make your and anyone's swap a lot easier!
Actually found a good source for both, but now I'm wondering if I can squeeze the GM 6.0 in the Jeep. Doesn't seem to be so easy finding harness' and reprogrammed ECM though.

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Old 04-17-2014, 10:28 PM   #572
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The 6.0 is nearly the same size block as the 5.3 if I remember correctly. The ls3 is a 6.2 and it fits.

So, you're telling me you've got an engine with no harness?
The 6.0 isn't as popular as the 5.3 and I'm not sure what the differences are between the 5.3 harnesses an the 6.0s.. I would think your best bet is getting one from separatech or some company of that nature.

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Old 04-17-2014, 11:16 PM   #573
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What I plan to do is tune the computer to where it will pass. If it does, I'll leave everything be. If it doesn't, I've got all summer to work on it.
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Old 04-18-2014, 09:24 PM   #574
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If you're looking for a relocation bracket for your air conditioner, check this link below. its only 185. I was planning to purchase this, but I bought the 15-20185 compressor(the one that fits the novak bracket) instead of the 15-20227 which is the one that is used in the link below.

Welcome to LS Brackets

I of course ordered the one that novak suggests.. and since then, the price of the compressor went up from $170 to $215 for the needed compressor and from $149 to 215 for the one I bought... I think the compressor that I have would work with the bracket listed above because the only difference that I see between them is the size of the pulley.
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Check out my 5.3 swap in progress here!
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Old 04-19-2014, 05:16 AM   #575
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Great read, I appreciate the effort you're putting into this thread for the benefit of the rest of us!
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Old 04-19-2014, 10:57 AM   #576
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Quote:
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Great read, I appreciate the effort you're putting into this thread for the benefit of the rest of us!
My loss is everyone's gain!
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Check out my 5.3 swap in progress here!
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Old 04-19-2014, 11:40 AM   #577
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I'm planning on putting a 5.3 (among other things) into a grand wagoneer I just got my hands on so this thread has definitely helped me!
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Old 04-19-2014, 07:22 PM   #578
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Just dropped some cash on getting this thing legal.. Turns out a 2006 sierra showed up at the junk yard yesterday. So I spend the better part of this afternoon stripping it.

Got the engine wiring harness, the harness for the fuel pump and evap system, the fuel pump, the TAC, the DBW throttle body, and the gas pedal. So there's that.
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Check out my 5.3 swap in progress here!
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Old 04-19-2014, 08:11 PM   #579
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The harness I got built is integrated into my stock jeep fuse box... Ill wait until another day to figure out how I will put this harness together...

edit: Ill probably just plug in the the jeep fuse box in, find out the wires that I need to cut for the gauges, and transfer them to the other harness. It shouldn't be TOO bad. Ill keep the Chevy fuse box that I have and use that for the rest of everything else. no big deal. If you guys have any ideas, or see something I'm missing, or just want to know what in the world I'm doing or talking about, let me know!

edit2: In case someone is wondering why the hell I got a 2006 harness... Well, from the years 2003 and up, the LS engines don't have EGR's(exhaust gas return)... Well whats that have to do with anything? The stock exhaust manifolds are way too wide to fit inside the frame of the jeep frame and those are the ones that have the EGR on them. I need the EGR to remain legal for emissions testing. So that means I need an engine from the 2003 year and up.. Since the engines are the same between the years, I just need the computer and the harness. I'll match up whatever I need to make it work and boom. You follow?

Needless to say, I've learned a lot from this swap.
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Check out my 5.3 swap in progress here!
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Old 04-22-2014, 06:14 PM   #580
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I just want to thank rockauto. If you need electrical connectors, see them. Napa and everywhere else has this 6 prong weather tight connector for $30 rockauto(PN # 85398) has them for $6. Just ran through the 06 harness and its got both the transmission range selector switch plugs cut and the transmission shifting plug cut. Other than that, shes good..

Jim used these quick disconnect plugs to go back and forth between the fuse box harness and the engine harness. one of the connectors is specifically for gauges so i will plug right into that to work the gauges.. Other than that, by using the stock chevy fuse box, all should work fine.... I may grab my junk and try to adapt the jeep fuse box to the chevy harness... but I probably wont.
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Check out my 5.3 swap in progress here!
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Old 04-22-2014, 11:59 PM   #581
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Chevy needs 12v to turn the a/c compressor on. Jeep sends out a ground when you have your A/C set to a setting which needs the compressor. To fix this, wire your ground which comes out from the small gray plug under the dash by your left foot as the wiring enters through the firewall(connection number 6 on the plug).

If you're running an electric fan, jumper over your power wire that turns on via the relay that you just hooked up and then the fan will come on when you turn the A/C on.

If I'm not clear, tell me.
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Check out my 5.3 swap in progress here!
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Old 04-26-2014, 07:02 PM   #582
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http://public.dm1.livefilestore.com/...rdrts=72836601

here is the hvac wiring for 2003?+ chevy's.

I dont think you need to have the three prong wire hooked up. but this isnt for certain.
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No Engine, axle, tranny, or t-case rebuilds.
Check out my 5.3 swap in progress here!
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Old 04-26-2014, 07:36 PM   #583
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Quote:
Originally Posted by jherrington View Post
http://public.dm1.livefilestore.com/...rdrts=72836601

here is the hvac wiring for 2003?+ chevy's.

I dont think you need to have the three prong wire hooked up. but this isnt for certain.

99%sure you don't need to use the data wire hookup. You can just wire it up like the jeep has it wired.. depending on your year, it should be similar to this.

https://w05.dealerconnect.chrysler.c...S/tj709183.gif
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Check out my 5.3 swap in progress here!
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Old 04-26-2014, 10:33 PM   #584
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As for the fuel pump. The 06 top plate has a diameter of 6in while the stock jeep pump is 5 3/4in. I'm not sure if this will make a difference with the screw on apparatus that jeep used to hold down the fuel pump Other than that and somehow getting the fuel tank level sender in the tank, it should fit fine.
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Check out my 5.3 swap in progress here!
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Old 04-27-2014, 11:07 PM   #585
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Im now checking if I can use my modified jeep pump instead of the chevy.. After taking the chevy assembly apart, there's nothing special about it besides the internal regulator and the tubes at the top.

The chevy pump assembly has three tubes..
Vent, fuel, and evap.. Something like that.

One is used to help fill the tank by releasing air back through the top of the fill tube, the other is hooked directly to the evap canister, and the third is your fuel line..

The evap canister has a port that comes from the fuel tank, which splits into two lines. One that goes to the evap line on the pump, and one that goes to the roll over valve.

I'm going to see if sealing the main one that goes to the pump and only connecting the one that goes to the roll over valve will work.

The other line that goes to the evap canister is the one from the intake.

The GM computer needs to see the pressure of the fuel tank and the level of fuel in the fuel tank. I think i can just swap over a chevy fuel level sending unit on side of the jeep pump, and then drill a hole for the GM pressure sensor, all should work... We will find out. I'm asking Wayne on pirate. He's great with this stuff.
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Check out my 5.3 swap in progress here!
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Old 04-30-2014, 10:26 PM   #586
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just working out the new harness.. not too bad.

Hey guys, if you need the tcc hookup, tap into the black connector that goes out to the jeep fuse block. connection number 9 on it. It has 12v resting and with the pedal pressed it goes to zero.

no need for a relay..
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No Engine, axle, tranny, or t-case rebuilds.
Check out my 5.3 swap in progress here!
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Old 05-02-2014, 10:58 PM   #587
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here is how I will be running A/C in the jeep. This way will bypass the chevy PCM and I won't need the chevy climate controls.

I haven't tried this out yet, but it's what I've come up with.
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Check out my 5.3 swap in progress here!
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Old 05-05-2014, 10:28 PM   #588
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I'm going to say the easiest year to swap would be 2002. No egr and still drive by cable. That way you're legal, and you don't have to fadangle the GM gas pedal in... Turns out in 06 the pedal went from metal and plastic, to all plastic.. So cut and weld to make it for right.
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No Engine, axle, tranny, or t-case rebuilds.
Check out my 5.3 swap in progress here!
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Old 05-06-2014, 05:17 PM   #589
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Not too much getting done right now. just waiting for the neutral safety switch/trans range selector to come in from amazon, the correct plug for that switch, and the 06 fuse box... I thought all of the fuse boxes were the same so i left the one at the junk yard... turns out, the two i have at home would work perfectly fine for a 2001( the years they came from) so, I ordered one and i put the other two that I have on ebay.

Did a couple of test fits with the fan and the radiator.. Looks like It will work fine. I'm working on an array of things, but getting the DBW petal installed is on the top of the list.

Reflecting back on this build, if you want ease, spend the money and keep the manual transmission. Holy Hell this whole thing would have been TONS EASIER..
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Check out my 5.3 swap in progress here!
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Old 05-06-2014, 06:08 PM   #590
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I see we have a lively crowd thread watching..
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Check out my 5.3 swap in progress here!
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Old 05-07-2014, 04:32 AM   #591
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I see we have a lively crowd thread watching..
Just soaking it all in...
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Old 05-07-2014, 06:43 PM   #592
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i just wonder why you decided to make things harder then needed to be with all the data ive provided when i did mine. Yours should of been a cake walk


and no im very wise on what i do and using a shop vac with gas would of never happened...youre lucky to be alive
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Old 05-14-2014, 10:43 AM   #593
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Sorry guys, not much progress has been getting done. I'm soldering the wires for the trans range selector/nss and stuff like that.
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Old 05-15-2014, 02:57 PM   #594
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It makes sense to follow in the steps of others when you can, but nothing teaches you more than making your own mistakes and overcoming those challenges. I'm a fan of what you're doing here. Keep it up. Excited to see the final product here.
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Old 05-16-2014, 11:11 AM   #595
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Yeah, George did a couple of things differently. He's not emissions compliant, he's not running AC and he's not running an auto trans, so EVERYTHING past the bellhousing, is stock.. Well maybe not the driveshafts, but that's expected.
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Check out my 5.3 swap in progress here!
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Old 05-16-2014, 06:35 PM   #596
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I can go to any inspection station and have my jeep plugged into their system and it will pass with flying colors for emissions. As where i live they dont require a sniffer and only a OBDII test



some of my statements are referring how you did the fuel. there is no need to buy the swap parts many sell. the LS motor will run all day long on the jeeps factory fuel system besides a pump swap

yes no AC here as my jeep is the basic model and its a jeep..when its hot out the doors are off
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Old 05-22-2014, 07:36 PM   #597
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I will never understand someone who goes through all of the trouble for an engine swap all for a 350... Waste of money.
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No Engine, axle, tranny, or t-case rebuilds.
Check out my 5.3 swap in progress here!
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Old 05-22-2014, 11:18 PM   #598
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here are some possibly useful diagrams for you guys.



Notice the purple wire... In my harness, mine was actually pink. So I went and traced them back via lt1 swap with the circuit number back to the fuse box plug. No big deal.

Heres the pin outs for the older two plug style sensors.

trans range sensor connector, glued in? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Hey, this build is finially getting somewhere!
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98 TJ sport 4.0L I6 356,000 miles.
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Check out my 5.3 swap in progress here!
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Old 05-24-2014, 07:46 AM   #599
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Out of curiosity, how much $$$ are you into this project at present time?
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Old 05-24-2014, 10:33 AM   #600
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Out of curiosity, how much $$$ are you into this project at present time?
too much.
I'd say 8,000

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Check out my 5.3 swap in progress here!
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