Take your pick. There are guys running the stock 4L60e, 350 or 400, and the 700r4. There are even guys running a nv4500, nv3550, and granny gear 4 spds. Its pretty much dependent upon what you want to do.
my question is.. I have a donor 2001 Silverado that I am going to use the 5.3 out of. Just wondering if the 4l60e and stock case (not even sure what that one is) would hold up. If so I would like to use that bc I have a DSD J10 axle
it really depends on what your doing and what the rest of the driveline is, but ive seen some chevy trucks get badly abused and stay together, so i dont know why you would have a problem with it for a little while, i would run it, whats the worst that could happen? you break it and then you just order your atlas.
You could use the 4L60E if you need OD, or a 700R4. Both are expensive to build, but the 4L60E needs computer control, which can add that much more complication. 700R4 will be easier, TH350 or 400 is easiest & cheaper.
I'm running the 5.3 with 4l60 and stock pushbutton 4x4 transfercase out of a 2002 avalanche it works fine but i wouldn't put it in to much of a bind or it lets the chain slip. I think im going to change to the np 241 or 231 with sye just to get by until i can get a good case. Also wanted to say im running dana 60's and 41 inch swampers . I havn't broke the stock case in a year of abuse.
One question for the guys with the 4l60 and the atlas. Are you running the speed sensor after all your gear reduction or in 4 lo does it think its going 100 miles per hour at 35 ?
03' TJ - In the process of installing a 2005 5.3L (LS6 intake, 220 cam) , 4L65e tranny, and NP231 w/ 32 spline output. Also running D60, 14 bolt, 5:38's, and 42's.
03' TJ - In the process of installing a 2005 5.3L (LS6 intake, 220 cam) , 4L65e tranny, and NP231 w/ 32 spline output. Also running D60, 14 bolt, and 42's.
I'm running the factory yj 2.5 liter fuel pump seems to work fine . I also went with 5.38 gears and 41's it has plenty of power . I can't fully test it yet since ive got xj springs on the rear . I get serious axle wrap when i hammer it. Getting 4 linked as we speak.
1992 YJ 2002 5.3L vortec - 4L60e - Stak4speed transfer case.
i got my harness done through http://www.lt1swap.com/
real quick turn around and cheap. well done also. haven't got to my fuel stuff yet.
I built a truck for a kid here with a 5.3,Advance adapters clutch kit,sm465, and np205.I used a painless harness, and had the computer reflashed by fastchips.They claim 375 rear wheel horsepower and it feels like it the truck rips.Oh, it is all in a 72 chevy 4x4 fleetside,painted hugger orange.:smokin:
I can't offer much yet b/c I'm right in the middle of this swap as we speak. I have a 5.3 Vortec LM7 from a 2002 Avalanche, a 4L60E from a 2002 Suburban, and decided to go w/ a NP241C from a 95 Tahoe along w/ a JB Conversions super short SYE kit. It's going to be stuffed into a 95 YJ that came stock w/ the 2.5 Liter piece of crap engine and AX5 manual tranny--probably in about 2 weeks.
I am in the process of building a 5.3 for the CJ8. Its a 2003 with full floating rods and the newer pistons (anodized top ring land, nitrided top ring, and floating pin). Its going to be running a LS6 Zo6 cam with milled 5.3l heads. The trans is a built th-350 with the trans go manual kit. More to come as it is installed and tuned.
Where is everyone going for harnesses? I am thinking of just calling painless and dumping the 700 bones.
We just gutted a tj at the shop and its ready for a 5.3 nv4500 and a built 231. The customer wants headers and i recommended stainless. Does anyone know who offers stainless headers that will fit?
I actually picked up a set of Mac mid-length headers for 98-02 LS1 F-bodies and they fit my Scrambler damn near perfect. I like em better than any other non-custom ones I've seen for Jeeps and they'll make more power than shorties. I got them for $125 shipped and I see them for sale on ls1tech.com pretty often for under $200. Not sure if they're offered in stainless but I think ceramic coating is a better option regardless.
Oh, and I was gonna put a 5.3 in my Scrambler but now I'm going with a mildly build LQ4 6.0. Same size and all the important stuff for a swap is the same. For a harness I might just do it myself, but I've heard good things about Speartech standalone harnesses for about $500. I've got several buddies who've gotten LSX tunes from Nelson Performance with great results, and once you buy the initial tune they'll re-tune it for free I think.
I'll be running a built 700R4 behind it with a 231-300 doubler. An adapter to the 300 was the same price as the doubler so it was a no brainer. All you have to do is swap a 27 spline input shaft from a 231, 241, or I think 208 into whatever 231 case you have and no adapter is required besides the stock one. I'm using the whole 241 6-pinion planetary in my 231 case. I won't be surprised if I break the t-case(s) with 425+hp but I couldn't swing the extra $2k for an Atlas at this point. Once the initial sticker shock for the full build is over I'll probably upgrade it.
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