SIERRASPEED

yep i can actually see that..... lol .... i guess i did it because i was under the impression i could just swap the extension housing from one trans to the other.. lol .. guess not.. lol well i guess ill just finish up with the engine swap only...

iamkeniff

iTrader: (16)

mine use to be a 4spd....it was a beast with the 6.2

noslorob

So what about swapping the 6L80E behind a 5.3 in my 05 RCSB 2wd? I don't want to swap the entire engine trans. Just curious what would be needed to just swap the tranny? Thanks,

Scott

sparkie124

I am interested in this swap. I have an 08 rcsb. I also happen to have a complete l99 6.2 6l80 drop out from a 2012 Camaro. Harness, ecm, pedal, exhaust. I got it for another project but would rather use it in my 08.
I want to keep the VVT in 6.2 but with a cam upgrade.
I know my 4.8 had DOD and am happy to dump it.

I can handle the installation and any fabrication needed for the swap, its the computer/programming part that im concerned with.
Will I be able to use the ecm from the Camaro?
What other concerns should I have?

iamkeniff

iTrader: (16)

To my knowledge you can not run a 58x tcm stand alone and still connect with the gen 3 (24x) ecm. I am unsure though considering no one has ever mentioned it. As far as i know you have to run a 58x reluctor wheel/ecm/tcm/stand alone harness to run it in an older truck.

Imho hp and a 6L80e swap is crap. Yeah i enjoy 6 gears but i spin 2k rpm with 4:10s, 32" tire still. My 4L60e i spun the same rpms maybe a little higher.

Nealy_16

Okay guys I'm new also and I need help. I just recently bought the 6l80e for my 08 Chevy Silverado 5.3 it has the 4l60e and I need to know what parts are needed for the swap

iamkeniff

iTrader: (16)

Transmission
Converter
Oil cooler lines
Dip stick and tube
Shifter linkage bracket or modify your 60e one (i did)
Slip yoke
Transmission mount or make one
6.0 or 6.2/6L80e wiring harness
Reflash your ecm with the OS for the 2500hd or denali
Reprogram the ecm for your mods

As for cluster i do not know if just "swapping" them out will work or not. So maybe a bcm change or a reflash, with possible gauge swap. Tow/haul and manual shifter is an easy swap as most trucks have the tu/td wiring already

Nealy_16

The 6.0/6.2 wiring harness is that the engine harness? Will it interfere with me having a 5.3?

iamkeniff

iTrader: (16)

The only thing that will be different is the VVT, which you don't use anyways, and the trans pigtail will be for a 6spd

Nealy_16

I found the wiring harness. It says it's for 5.3, 6.2 and the 6l80e 4x4
But I have a 2wd. Does it matter?