TheChevyLives

Sup fella's, new to the forum, Ive come all the way from FullSizeChevy.com, lol. Been plottin on a fairly long term 6.0 liter project. I'd like to go from the block up. I hear the bottom ends on these engines are incredibly strong. So that should save some dough. My rig has a 5 speed now and I'd like to keep it a manual transmission. Ive heard the T56 will do, but I'll need some driveshaft modification, no biggie. The biggest question I have is the computer, and tuning it. How would you fella's do the buildup??

desTRUCKtive

is your truck a 4.8 or a 4.3? If its an V8 already you can download the tables for the computer, I would not know for the V6. As far as the transmission you can set the computer to not read A4 settings.

white1

iTrader: (5)

A buddy of mine is running his LQ9 on the 4.8 PCM. It has some peaks and valleys in the dyno curves, but it still is about 50hp stronger than my 5.3 with the mods.

litreddevil

iTrader: (4)

Once You Tune It It Does Not Matter What Motor The Truck Had 6.0 Are 5.3 We Don't Change The Pcm.

jabtay

So all I would have to do is pull out the 4.8 and put the 6.0 back in its place, no change of harnesses? What if i have a cam and headers, will they also work with the 6.0, or would I need new stuff?

Dont mean to hijack this post, but I am having the same questions

white1

iTrader: (5)

It will perform better if you get it tuned for your mods.

zippy

nothing specific should need to be changed other than the pcm programming.

99Silver6.0

iTrader: (1)

Its all easy. Now do it!!

Oh yea, swap flexplates too.

litreddevil

iTrader: (4)

this is right everthing bolt right up and if you put a cam and headers it will just be that much more.

agreif

iTrader: (4)

Headers for a 4.8/5.3 block line up the same as for a 6.0?