2.5 to 5.3 swap (start to end) & cost sheet - Page 2 - Jeep Wrangler Forum
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Old 06-27-2012, 02:20 AM   #31
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I have a question. i am looking for the Jeep pcm pinouts. i want to omit all of the wires i will not be using. if anyone knows where i can find a chart, or even better, a chart that tells exactly which wires to pull out, that would be awesome and i would greatly appreciate it.

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Old 06-27-2012, 11:10 AM   #32
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I don't see the D35 lasting very long when your Jeep is making almost twice the power. If you ever launch too hard, it's toast.. but I get your point. Drive it 'til it breaks, then upgrade. That's the Jeep way

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Old 06-27-2012, 07:59 PM   #33
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I hope this helps!
http://www.google.com/url?sa=t&rct=j...9pC-0aGf_DHCBg

BTW my Sentra engine swap isn't the fun one. I'm pulling out a 300+hp turbo 2.0L, and installing a stock engine! LOL
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Old 06-28-2012, 04:10 AM   #34
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Quote:
Originally Posted by Rmitchell83

before and after
Damn that looks good, how did you get it looking that good?
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Old 06-29-2012, 06:58 AM   #35
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Quote:
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actually, from what i have been told, the D35 will hold up just fine unless you are doing some serious crawling. I had originally planned on doing the 8.8 swap, but have changed my mind and am going to keep the d35. If it doesn't hold up... no biggie, ill just swap in the 8.8. they are readily available and from what i understand, there is a company that sells a kit with the brackets you weld on and it bolts right up.

mine is the iron block. i have not road tested it yet, but we did enough to tell there won't (shouldn't**) be any major problems once we get it all put back together. good luck on your swap, it'll be a fun little project for sure
Im doing the "drive it till breaks method" myself ,So far driven daily for three months and two all day off road park trips. One of the trips was 100 deg F day with major hill climbs. The D35 has held up fine in all of that and its behind a 08 LY2 , and pulling 12.50x35 tires.

The only problem I had was a couple of vapor lock issues because my corvette filter was a little too close to the exhaust. I wrapped it and have had no more vapor lock. But Im building a replacement a little at a time , a 8.8 with artect truss brackets.

Good luck on your build
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Old 07-08-2012, 04:32 PM   #36
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Any updates? Im ready to see this thing go! haha I have been searching for parts, so I can get this gutless 4L out of my jeep. I found A 5.3 locally for $300 it comes with wiring harness and computer. The mileage is unknown, so Im going to rebuild it with a few upgrades.
Do you know what the guy removed from the computer? How much does he charge to do the computer modifications?
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Old 07-26-2012, 03:33 PM   #37
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Any updates? Im ready to see this thing go! haha I have been searching for parts, so I can get this gutless 4L out of my jeep. I found A 5.3 locally for $300 it comes with wiring harness and computer. The mileage is unknown, so Im going to rebuild it with a few upgrades.
Do you know what the guy removed from the computer? How much does he charge to do the computer modifications?
Well as far as updates go, we finished painting the body, putting the bed liner in, I painted all the black pieces on the dash (tan pieces still in good shape) put the dash back in, painted fender flares, mirrors, etc. put motor and trans back in last night, hooked up fuel system, finished the GM wring harness (looks WAY better than factory by the way, very very pleased with how that turned out. Pics coming soon) and that's basically where we are at. Will continue working on it this weeked.
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Old 07-26-2012, 09:43 PM   #38
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Awesome! Thanks for the update.
I almost got a 5.3, wiring harness, and ECU locally for $300. I had to go to Mexico for work, and had to stay longer then expected. The guy sold it before I got back! The search will continue.
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Old 07-30-2012, 07:59 PM   #39
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Did you have to move the transmission any, or was it fine where it was?
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Old 08-07-2012, 05:31 PM   #40
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How much did you get the motor for? And what did it come out of? I just pulled my 2.5 out of my yj and I'm looking into either a 5.3 or ls1 5.7 engine swap
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Old 08-09-2012, 10:55 PM   #41
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The Transmission was fine where it was. We had to lower the pan a little but all of my angles ended up near perfect.
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Old 08-09-2012, 11:04 PM   #42
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Took the Jeep out on its maiden voyage night before last! and have been driving it around town yesterday and today! It drives perfect! very smooth, no vibration, no rattles and no leaks! The transmission shifts great and the motor could not run better! all that is left now is to get the hood and doors painted, get some ac lines made and i had issues with the tachometer emulator i got from NOVAK, still trying to deal with them on sending it back and getting another one. I also am going to order a thing from Dokata Digital that will convert GM signal to Jeep signal for the speedometer. other that tach and speedo, all other gauges function properly. So we should have everything other than gauges buttoned up by the end of the weekend!!
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Old 08-09-2012, 11:13 PM   #43
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Also, I have not been good at all about posting photos along the way as I had originally planned, however, I have downloaded all the pictures I have taken on photobucket. I will take more photos and a couple of videos and post them as soon as I get some more time. Here is the link to the album Pictures by rmitchell83 - Photobucket
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Old 08-09-2012, 11:19 PM   #44
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Old 08-16-2012, 03:21 PM   #45
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well rear end broke last night so guess I'll be doing the 8.8 swap.
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Old 08-17-2012, 05:00 AM   #46
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Broke an axle getting on it or what
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Old 08-17-2012, 10:55 AM   #47
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I dunno, haven't tore into it yet, I think its the gears though. The driveshaft spins when I put it in gear and it clanks something awful. I didnt even really get on it hard though. Took off about half throttle and, bam... just broke.
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Old 08-17-2012, 07:27 PM   #48
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I'm guessing its a night and day performance difference!
How many miles do you think you drove it?
I am seriously thinking about doing the swap.
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Old 08-18-2012, 11:12 PM   #49
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It drives freakin awesome. Do it for sure. I probably drove it 30 or 40 miles, it didn't hold up long at all.
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Old 08-19-2012, 08:37 AM   #50
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I have an 05 Unlimited Rubicon, so I hope the d44's hold up better!
I wished you lived closer so I could check this thing out.
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Old 08-19-2012, 07:12 PM   #51
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Quote:
Originally Posted by Rmitchell83
I dunno, haven't tore into it yet, I think its the gears though. The driveshaft spins when I put it in gear and it clanks something awful. I didnt even really get on it hard though. Took off about half throttle and, bam... just broke.
Chevy power lol
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Old 08-19-2012, 10:43 PM   #52
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Quote:
Originally Posted by Green LJRub
I have an 05 Unlimited Rubicon, so I hope the d44's hold up better!
I wished you lived closer so I could check this thing out.
You'll also be better off due to a longer drive shaft.
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Old 09-04-2012, 10:36 PM   #53
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well rear end broke last night so guess I'll be doing the 8.8 swap.
You shattering the 35 one of the best things that coulda happened! The 8.8 swap is a huge improvement from the D35. I cant count how many times I shattered the hell out of the guts of my D35 before I did the Explorer swap (first time was actually in a Wal-Mart parking lot...... in reverse......). The rear disc brakes and stronger internal components are ESSENTIAL when you are running 35"+ tires. The TJ to 8.8 bracket kits and the factory suggested gear lube are kinda expensive in my eyes but I recommend the swap to any D35 owners. Especially if you are considering a V8 swap.
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Old 09-20-2012, 10:18 PM   #54
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Finally got my brackets in, ordered the kit from kNOwwhere2Jeep.com. It came with everything i need to do the swap. Got a 8.8 from the similocal pick n pull, looks to be in perfect shape. Will start on it tomorrow! cant wait to get back in the jeep!!!
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Old 09-26-2012, 01:35 PM   #55
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8.8 is in, and the Jeep is running flawlessly! We took it out yesterday to test the strength of the rear end brackets and welds etc. lifted the front wheel off the ground, and over a water bottle, from a dead stop. this thing is a BEAST! We still have a few minor, bottom of the list stuff left, but i am driving it everyday now and could not be more pleased with it.
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Old 09-26-2012, 07:46 PM   #56
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Thats great, I'm glad you got it going! I imagine its a night and day difference between the shitty 4.slow and the 5.3. Check your gas milage! I have hear they get better MPGs with the 5.3.
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Old 09-27-2012, 08:02 AM   #57
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yeah its nowhere near the same Jeep. i dont know if gas milage is any better right now, i cant seem to keep my foot out of it lol. but no doubt it will get better fuel milage
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Old 09-27-2012, 08:06 AM   #58
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I'd expect you to see a minimum gas mileage in the high teens, maybe even low 20s. My Silverado avg about 21 to 22 on the highway with the 4.8L.
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Old 09-27-2012, 09:32 AM   #59
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Great Job! I can't wait until I have the money to do stuff like this to my Jeep! $$
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Old 09-28-2012, 01:19 PM   #60
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Hrm, maybe I should take the 5.3 out of my Avalanche and drop it into the Jeep.

I'd love to see a pricing breakdown for all of this. As well as a total of hours spent doing it.

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