waynemitchell

I'm putting a 6.0 in my 2000 z71 over the next month currently a 5.3 truck. Is there any difference in the engine harness between the two... can current ecm be flashed to except the new 6.0 or no.. or any other concerns that anyone can think on..

01WS6/tamu

iTrader: (37)

Pull 5.3 drop in 6.0 use the existing pcm and harness in your truck. Then take it to a tuner and have them do a dyno tune or copy stock 6.0 maf, spark, fuel, timing tables and paste over the oe 5.3 stuff.

Any tuner will know what to do it's old hat these day's.

waynemitchell

OK that's what I was thinking I've put 5.3 in many other vehicles but I use Larry's Electric harness's. Wanted to be sure before i went in hot and needed more parts hahah.. Thank you for the info. Much appreciated.