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Old 02-24-2012, 07:59 PM   #1
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5.7 vortec/l460e swap questions

here i go , im wanting to do a engine transmission and possibly a transfer case swap. funny thing is im decent mechanic when it comes to machinery,not so sure about automotive though..lol i guess im goin to find out. so any advice and help would be greatly appreciated. now the specifics..i have a 1997 suburban complete vehicle for this swap 5.7 with a l460e chkn on what t/c . my yj currently has 2.5 /ax5 tranny . doing this swap because tranny has a hole or had a hole i plugged it with epoxy putty..some bolt worked loose and blew thru the case. all gears work after 2 months ..crazy huh?...my first question is what all can i use from the donor to cut down on expenses?

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Old 02-25-2012, 12:10 PM   #2
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Your going to be able to save a lot of money but it will take a lot longer and a lot more money then you think. The wiring harness is a good exsamble of a reusable item but could take a super long time to remove and repurpose, (painless wiring) after market wiring harnesses can save you a ton of time and possible mental burn out but they arnt cheap. If you are a good welder then this swap just got a lot easer, if you have to relay on a buddy or a shop be patient and save up your money. It took me two years and $6000.00, parts and misc labor.

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Old 02-25-2012, 12:50 PM   #3
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IM doing the swap right now. Painless wiring kit and self programming computer is running me $1400. Motor is a 6.0 Vortec 800. Custom built turbo 350 is 2200 and dan 300 is 150. I would greatly recommend using a after market wiring harness, I would not recommend that transmission b.c it is very long and you want to have a longer driveshaft. I decided to use a performance turbo 350 b.c my motor has some mods to it and i want it to last a long time. since your motor will be stock you can simply bolt a stock turbo 350 to your motor and get the 100 adapter plate. A lot less wires and a better driveshaft angle. I also am using the dana 300 b.c it is also very short and allows for the twin stick control.
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Old 02-25-2012, 01:02 PM   #4
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Originally Posted by 89JEEPYJ View Post
IM doing the swap right now. Painless wiring kit and self programming computer is running me $1400. Motor is a 6.0 Vortec 800. Custom built turbo 350 is 2200 and dan 300 is 150. I would greatly recommend using a after market wiring harness, I would not recommend that transmission b.c it is very long and you want to have a longer driveshaft. I decided to use a performance turbo 350 b.c my motor has some mods to it and i want it to last a long time. since your motor will be stock you can simply bolt a stock turbo 350 to your motor and get the 100 adapter plate. A lot less wires and a better driveshaft angle. I also am using the dana 300 b.c it is also very short and allows for the twin stick control.
He's right. I have the 700r4 with a ton of work done inside of it to hold up to my motor but if my memory is right first gear is lower in the 700r4 and I love my overdrive
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Old 02-25-2012, 03:01 PM   #5
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If its a mostly street truck i completely agree the 700r4 would be great. But at least for my application, with heavy rock crawling, a lot of lift, and big axles it makes more sense to have a nice long drive shaft and a worked 350
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Old 02-25-2012, 03:33 PM   #6
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If its a mostly street truck i completely agree the 700r4 would be great. But at least for my application, with heavy rock crawling, a lot of lift, and big axles it makes more sense to have a nice long drive shaft and a worked 350
Yep, makes total since. When I build mine ( I had a alot of help ) I wanted to make sure I could cruise safely at freeway speed and wheel all day and drive home. I dont live around a ton of crawling. Oregon.....
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Old 02-25-2012, 08:39 PM   #7
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first let me say thanks for your guys input, im new to this engine swap stuff . for now i think the set up is goin to be with the l460e.i will be driving on the road 75 percent of the time and im thinkn overdrive would be awsome.however im subject to change my mind as i wade through all the information and thoughts of what this rig will be. i dont have a ton to spend so i do need to do most of the work myself so i can go with a standalone wiring harness and a novak adapter for my 231 t/c..as far as welding , what all would i be welding..i seen a bolt in engine mount from advanced adapters.here is my jeeps current set up 3 inch body lift 4 inch suspension lift ,i have 8.8 ford rearend with highpeed30 in front 4.88 running gears. here is what all im thinkin will be involved and i know im not thinking of everything so please add to the list.and $$$$ amounts to them. engine mount..transmission mount..wiring harness.. t/c adapter ..fuel delivery..headers or manifolds..driveshafts..radiater..electric fan...im paying 1200.00 for the 97 suburban. is this too much? mechanically sound just missing passenger door from wreck .thanks again
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Old 02-26-2012, 10:56 PM   #8
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I dont think $1200 is out of line.

As far as welding I personally feel welding the motor mounts give you unlimited amount of ajustment.I havent spent much time looking at the bolt on mounts and I'm sure bolting them will be perfectly fine and If you don't have to pay some one to do it for you even better.

Other welding on my jeep was more custom stuff that I really didn't need to do but I just did because I was there. I had a buddy build me a sweet trany tranfercase cross member and I also had to buld my hearder Y pipe to conect it to the exaust, my front drive line, starter, oil filter, and drain plug all made for very tricky exhaust routing.
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Old 02-27-2012, 09:26 AM   #9
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The biggest thing you need to look into is the length of everything. if you have anything bigger then the th400 or 700r your gonna have a super tiny driveshaft. The bigger the driveshaft the better you will be. with crossmember you should be able to get away with just driling holes to mount tranny. adapters are pretty expensive, rear driveshaft wont be too expensive b.c u just have to have it cut and balanced but front will be pretty expensive. U also gotta look into hoses which can add up. I would also be a little worried about the 8.8 if it has the stock axles in it b.c i have seen stock motors easily break them. If your braking is sketchy i would deff fix that be4 u get a lot of power in ur truck
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Old 02-27-2012, 08:36 PM   #10
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spent a few minutes talking to novak adapters and howell so far im up to 3700.00(including donor vehicle)using weld in mounts ,their radiator and electric fan,transfercase adapter and super short sye{for length concerns).still need to see what happens with manifolds.they are telling me that the yj fuel pump 91 -95 will produce what i need so im hoping they are right,will be calling painless tom to see what the say.howell said no need to flash the computer becaus engine and tranny are matched and all the pollution control stuff is staying and a/c standalone.more good news i hope..lol..and now to the hoses guess that something i didnt think about.what $$$ amount should i put on that? any suggestions on shifter and or linkages i might need ?you guys have been through this , im sure enough research and time spent searching i can beat some of the prices they are giving me, but is it worth the time loss for a few bucks off here and there, some direction to better priced and quality companies would be great
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Old 03-04-2012, 12:43 PM   #11
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Im experiencing this as we speak. For wiring harness i recommend the stand alone harness so that its easy. IM going to weld in perchs and test fit the motor tonight probably. I plan to use the B&m shifter set up
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Old 03-04-2012, 10:43 PM   #12
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I am pretty much done with my swap. I put in a 5.7 with the 4L60E and np 241C all connected. I tried to just use the harness that I got with the engine, but after banging my head on the wall trying to figure what wires I needed. I broke down and bought a wiring harness from howell. Man I got to say it was well worth the money!! I am having to add another brake switch to give the ecm power til I aply the brake so when it is in overdrive the torqe converter actually locks. I bought the bolt in engine mounts. It made it easier to put the engine in. now im having raise my front end cause the motor mount hit the axle. I got my sye from jb conversions. just a heads up u have to stay with the same speed sensor if u use any tranny like the 4L60E because ur speed sensor sends a pulse to ur vehicle speed sensor buffer, then goes to ur ecm to tell ur ecm how fast u r going cause ur ecm tells ur tranny when to shift. If u dont do it that way u will never get out of 1st.
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Old 03-05-2012, 08:30 AM   #13
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if you can weld i would rec the weld in ones. it was the easiest thing ive ever done. just follow the measurements they give and its 123 in.
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Old 03-05-2012, 03:07 PM   #14
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yes i do believe i am going to go with the weld in mounts/ DEPUTYDawg..how is the 241c working out , is it push button 4wd..and if it is what action did you take ? i would love to save 500 plus not having to get an adapter for my t/c..still have to buy the sye for either because of length right? what type of drive shaft do i need to buy since im doing the sye...STILL LEARNING>>LOL...got my donor vehicle today and got it running like a top, everything checks out so now its time to start buying up parts
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Old 03-05-2012, 03:10 PM   #15
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89jeepyj, looks like you have an awsome jeep project, so is it as big as a headache as people say,? just wondering how much tynenol i need to buy
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Old 03-05-2012, 03:23 PM   #16
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time to break out the popcorn......
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Old 03-05-2012, 03:23 PM   #17
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Step one, is your Suburban a Cali or Federal vehicle.
If its a cali vehicle, pick another vehicle as a Donor, for emissions and smog check issues, you will NEVER get the Suburbans computer to think your 10/15 gallon fuel tank is a 25+ gallon tank, and will set the MIL for EVAP system.

California Suburbans and Tahoe/Yukon vehicles HAVE the EVAP monitor, Federal Suburbans and Tahoe/Yukon vehicles do not. this is the same for almost all Suburbans and Tahoe/Yukon vehicles from 96-99, all vehicles after 2000 and newer have the EVAP monitor.

If you dont care, then do the swap and dont move into an emissions state.

I was going to use my 99 Yukon until I verified this, now im looking for a Federal Donor (Im a Smog tech, and a perfectionist, so my Jeep better be right).

EDIT: because the 700/4L60 is so long, save all the space you can, I plan on using these to really reduce the length:
http://www.jbconversions.com/product..._short_sye.php
and
http://www.jbconversions.com/products/adapters/1002.php
(and the kit also works for the 4L60, just gotta specify 4L60 when ordering)
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Old 03-05-2012, 04:21 PM   #18
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So far it is going really well and everything is cooperating. The only thing that is depressing is the funding. if i had proper funding the jeep would be done this week. since i do not the jeep wont be done for months. Took me less then an hour to get motor installed from scratch with the weld in mounts
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Old 03-05-2012, 06:45 PM   #19
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what is the best way to tell if its a cali suburban or not ? i live in tn we do have smog , but the only thing they check with vehicles 95 and later is the tail pipe sniff and gas cap, heck my jeep doesnt have a catilytic converter on it now and just passed yesterday ..lol..i did hear something odd though while i was there , they wouldnt pass a guy because his engine was to clean. what the heck??!!!
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Old 03-05-2012, 07:31 PM   #20
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Underhood emissions decal.
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Old Jeep that was totaled (and SOLD!):
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Old 03-05-2012, 07:38 PM   #21
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i looked there ..it said meets all us federal epa laws as pretaining to the year of the vehicle , seen nothing that indicated ca or all 50 states..im thinking federal
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Old 03-05-2012, 08:00 PM   #22
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89jeepyj that must be torture. think that is why im goin to make sure i have most of my big ticket items done and some$$$$ on hand.. it will drive me ctazy not to finish within a reasonable amount of time...starting to list stuff craigslist as we speak..lol
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Old 03-05-2012, 08:18 PM   #23
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The only reason it will be some what surviveable is b.c i go away to college. Jeep is hidden away in the garage. Im trying to search craigslist for a dana 300 with a flip kit so i can get it somewhat cheap over an atlas. motor and tranny will be in for good by thursday when all the parts come in
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Old 03-08-2012, 04:43 PM   #24
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fair price for my 2.5 and ax5?....engine runs great... transmission works fine"for an ax-5"..lol will leave engine and tranny in jeep for them to hear run and test drive..
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Old 03-08-2012, 09:53 PM   #25
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i looked there ..it said meets all us federal epa laws as pretaining to the year of the vehicle , seen nothing that indicated ca or all 50 states..im thinking federal
Yup, if its a cali truck it will clearly state that, your is a Federal.

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http://www.wranglerforum.com/f330/2x...ad-490865.html
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http://www.svrider.com/forum/showthread.php?t=280873
Old Jeep that was totaled (and SOLD!):
http://www.wranglerforum.com/f330/2x...ad-101879.html
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