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.