As I have gotten more information: To my Knowledge it had a BTR Stage 1 NSR Cam installed - Then then the previous owner has the vehicle Tuned by dirtydirty racing. I was ADVISED to just return everything to stock and replace the lifters - we had the vehicle less than a week before the lifter...
I have a new to me 2011 5.3L Yukon. Cam, Lifter & DOD delete was previously done with a "tune". No hard data on what was installed i do know they kit was from BTR. Week after purchase heard a lifter tick - had a shop confirm it was a lifter. I would like to go back to stock cam/lifter with DOD...
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