Agreed the comp cam 212/218 lowlift cam is a proven on this site lets see if some of them chime in

 

I say 212/218
plenty lowend to help pull those big tires
my truck runs great with a 212/218 always in the power never a spot where it bogs
I feel a 212/218 is equal to a 220 cam but better bottomend with the 212/218

 

with that converter i say nothing bigger than a 212/218.. and with those big tires i say thats the biggest u can go.. ur gonna want 4.56s... i run 4.10s on my 30 in tires and i love it.. im on a bigger cam but i also have a bigger verter..

 

What lift would i want on that 212/218. .. high lift or low lift?

 

also would i be ok with stock injectors for this?

 

This....

low lift, and the stock injectors will be fine.

 

What is your exhaust setup? Im running a Isky mid lift 212/112 in a stock lq4 right now. Pulls hard, has more low end than the stock cam and killer midrange, with a light chop at idle.

 

I see all kinds of suggestion for a 5.3 but what about a 6.0 in a rc sb. 212/218, 220, 224? Looking at keeping the stock converter with my 4l80e which seems to stall around 24-2600.

 

Do you want it to run good, or just after sound? If it were me I'd keep it around ~215 max and LSA 110~112. If you swap the converter then 220~224 would be fine. That heavy converter in a power robber; getting rid of that will do more than the cam.

 

It is a daily driver. just wanting more pep throughout, gonna do lt either at the same time or just after. I have seen stock stall replacements that list as a new design and light weight compare to the older 4l80e converter. Of course mine is 11 years old they have surely come up with a better design by now.