
Originally Posted by
rgvsierra
ok, well your gonna have to use your stock cam,timing cover and sproket from 5.3, or swap to the gen 3 style cams, like i did. leaving the stock vvt cam and it will advance it since your truck has no harness connector to control the vvt.
your gonna have to tune out the dod in the pcm, if not possible right away you can swap valley covers, swapping out valley covers is to prevent the motor from going into a limp mode, due to the connector in back of cover not getting a signal. it will start to sputter/misfire setting several dod codes. but the 5.3 valley cover on the 6.0 will read lower oil pressure in cluster, not sure why.
while your at it, swap your 5.3 oil pump to the 6.0, its higher volume than the standard 6.0 pump. i did that on mine and it has good oil presure all the time.
those are the things i went through, and i see your truck is afm. a truck without afm/dod, wont have those problem, but will still have to swap cams out, unless a vendor is selling harness conversions to make the vvt work on trucks that didnt come with it from factory.