prep for 5.3/4l60 to 6.0/4l80 swap

I've got a 01 tahoe 5.3/4l60/4x4 and I picked up a 6.0/4l80/TC out of a 04 2500HD. the 6.0/4/80/tc are all still mated together, and wirig hardness harness and ECM are still connected. From what Ive been reading here, it should be a direct swap (plug and play).

Is there any wiring differences between the to years. Didn't things change 03/04 time frame?

I noticed the connector for the Park Nuetral Saftey Switch is disconnected and it appears that two of the wires were pulled out/ broke away from the connector on the harness. SO THE fix; are the harnesses from the 4L80 and 4L60 the same?

I use my Hoe for a DD and mainly Slowing a 5500-6000lb boat. My looking at long tube headers, true dual exhaust, haven't decided on an air intake yet, a program, and a CAM (but I don't know what one?)

thanks in advance.
Jason

this might help with trans wiring, as for everything else it should be fine but youre gonna have to change to a drive by wire throttle which means a pedal change' im pretty sure, someone will chime in that knows for sure. Oh also relocation of the trans crossmember.and a few other things.
4L60E to 4L80E Wiring Swap - Page 3 - PerformanceTrucks.net Forums

link for 80e-60e just look at the crossmember relocation.

http://www.ls1truck.com/forums/front...rans-swap.html

Thanks lambo. I've read thru the links previously, just wondering if there are any differences in the years of the stuff i'LL be using.

What cam would you recommend for towing?

something under, a 220 like a 218 something you wont really need a big stall in.

212/218 would be a good cam

You can just put your 5.3 intake on the 6.0 and still have DBC.. That way you dont have to mess with upgrading the pedal. Don't worry the intakes are basically the same, ones just DBW and the other is DBC

So after a little more research what do you think about thos combo:
5.3 heads to bump up compression
5.3 intake to maintain DBC
Pacesetter longtube headers
Comp Cams XTREME RPM XR259HR - 206/212 .515/.522 w 1.7 rocker-112 LSA

What this cam reguire a a difference torque convertet?

nah i think that cam would be fine.

OK guys i justed signed up....my question is on the same subject as above...
i drive a 2000, 1500silverado Z71 4.8 i have a chance to buy a complete 2006 hummer lq4 with pcm,and 65e tranny with only 6500miles for $1500. what i need to know asap cause i have to pick it up this Sat. Aug 1st. or else i'll lose it.......what will it take to swap it in my truck!!!!!!!!...sorry for long story....Plz chime in...

As I understand it, the 6.0 should be a direct swap. But As stated above the newer Chevs are drive by wire, and our trucks are drive by cable. So swapping your intake fixs the issue.


As for the building and engine setup I'm new to the chevy build world, so my knowledge is limited. The setup I'm posted above is just something I've put together, I'm not sure just how it's going to work.

Stock 5.3L heads flow very poorly and I wouldn't even consider using them on a 6.0 without having them worked.

As far as the engines, they are a direct swap as long as you have a 4.8 or a 5.3L. Make sure you have a Gen III engine rather than a Gen IV engine. They have different reluctor wheels and the cam position sensor is in the front on the newer engines.

As far as the transmissions. It is a fairly easy swap. The hardest part is the transmission crossmember. If you have a 99-early 2000 truck the crossmember is extremely easy to modify. If you have a 2000.5-2006 then you'll need to section it and move the mount back about 6"(it may be more or less, I forget).

The wiring harness can be altered fairly easy by switching a few wires here and there.

You can even use the factory driveshaft on the 2wd truck but you'll need to modify the yolk at the differential.

There's a few more little things here and there, but that's pretty much the basics of it. The engine swap is the easy part, an the transmission swap is a bit more involved but certainly do-able.

Could you clairify Gen III vs Gen IV?

Hey thx's for info...yeah i'll be picking up Lq4 2006 with 65e tranny to swap it into my 2000, 1500 silverado Z71...anything else i should know???..will i be using my ecm or the LQ4's.....

Quote:

---

Originally Posted by jmj85

Could you clairify Gen III vs Gen IV?

---

i think 1998 and later are Gen IV.....

Quote:

---

Originally Posted by geovett

i think 1998 and later are Gen IV.....

---

I'm pulling this from memory so forgive me if it's a bit off.

Gen III engines are the older style LSx based engines.

This includes:
99-06 4.8/5.3/6.0 engines from the nbs trucks.
Pretty much all Ls1 engines(the 04 GTOs may have been a gen IV though)
LS6 engines from 01-04
98-02 camaro/transam ls1 engines

Gen IV engines:
Ls2
Ls3
LS7
Ls9
Basically all the corvette engines from 05-current
The 07-up nnbs silverados are all gen IV engines
The new camaro engines are all Gen IV

Hopefully you get the trend.

hey randomhero, what's up. Just joined here on the search of more info!

You happen to know off hand if the LQ9's out of the '06 Escalades are GenIII or not? Was it even possible they had GenIV's or not? I really have no clue.
I'm going tomorrow to take a look at a cheap low mile longblock out of one and would like to know what to look for as far as possible differences. Need the GenIII to swap in place of my '02 5.3.

Can anyone here confirm, or have details?

None of the utilities have the GEN IV in 2006. Your Escalade engine is a GEN III.

Quote:

---

Originally Posted by GasGuzzler

None of the utilities have the GEN IV in 2006. Your Escalade engine is a GEN III.

---

Gotcha, exactly what I was wanting to hear anyway. I was not sure if there was some fluke and for some reason GM started to put the Gen IV's in the Cadi's early or something like that, so I wanted to confirm if it was even possible.

Anyway, '06 LQ9 longblock is currently sitting in the back of my truck waiting to be unloaded! :dancenana:
...too bad I can't afford to do much with it anytime soon... :(