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71cadc10 · 01-12-2017, 01:46 PM

could you post a picture of the 2?

sounds to me like the 2013 is a VVT engine, the 08 was not.

sensor on the front cover, facing the right (looking from front) is the cam sensor. That would be same on both.
If the new engine has a sensor facing the other way, it would be for the cam phaser oil control valve (=VVT)

might be a little late, but to rectify it you could have changed the cam for a non VVT one. I believe the engine would run just fine that way then, with the 08 computer and tune file that's on it now

reluctor is same 58x
you need to change cam, front timing sprocket on the cam
both engines should have the cylinder deactivation (AFM)...so you can leave lifters in there if you want.
it would probably run with that same VVT cam, but not as well as it should...since that cam is cut to use the advance/retard functions the VVT gives it.
can't say I've ever tried that...to be sure how it would run.

01-12-2017, 01:46 PM	#3
71cadc10 Registered User Join Date: Apr 2004 Location: Boiling Springs, PA Posts: 435	Re: 2013 5.3 swap in a 2008 Yukon now high idle issues could you post a picture of the 2? sounds to me like the 2013 is a VVT engine, the 08 was not. sensor on the front cover, facing the right (looking from front) is the cam sensor. That would be same on both. If the new engine has a sensor facing the other way, it would be for the cam phaser oil control valve (=VVT) might be a little late, but to rectify it you could have changed the cam for a non VVT one. I believe the engine would run just fine that way then, with the 08 computer and tune file that's on it now reluctor is same 58x you need to change cam, front timing sprocket on the cam both engines should have the cylinder deactivation (AFM)...so you can leave lifters in there if you want. it would probably run with that same VVT cam, but not as well as it should...since that cam is cut to use the advance/retard functions the VVT gives it. can't say I've ever tried that...to be sure how it would run. __________________ 71 C10 long bed, 2003 6.0L, 06GTO E40, T56, 12bolt 4.10 rear Last edited by 71cadc10; 01-12-2017 at 01:53 PM.