i have an 06 silverado with a bad 5.3 i wanna swap to a 6.0 i need to know if its just plug and play or if i'm gonna have to sink a bunch of money in to it to make it work this is gona be a very low budget deal since its a daily drive and i need to get it finished asap.

 

Im pretty positive its just a plug and play thing, just have to tune it for the bigger motor. Im doing the swap soon also so if there is something else ill have to do itll be nice to find out in this thread

 

im doing this swap also, and it is a plug and play deal as long as the 6.0 is either an lq4 or lq9, the newer ly6 is a gen IV 6.0 with variable valve timing and has the 58x reluctor wheel and the cam sensor is on the front instead of the back, also if its the 99-01 iron head 6.0 it will have a longer crank than the 02-06 6.0 so it wont work with the 4l60e unless you have a custom torque converter made.

That is to the best of my knowledge someone else will chime in im sure and correct me if i missed something.

As for a tune, its always a good idea to get a re tune done for the new motor but even if you don't the comp will make its own adjustments to handle it. it just may take a while for it to "relearn" it .

 

now i just have to find a one cheap enough without a million miles on it lol

 

Only 99-00 had Iron Heads with the long crank. 01-up will have aluminum heads and the normal crank with spacer.

The stock 5.3 tune will have to be changed for the 6.0 engine to run correctly. It will most likely run lean. The computer may allow it to start and run but it doesn't know what injectors are on the actual engine or that the size of the cylinder has changed.

You should ask for help in the engine section and or the tuning section.

 

ahh so only 2 years of the iron heads, good to know. thanks for the correction!