Displacement on Demand questions
06-10-2010, 06:26 PM
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Displacement on Demand questions
i just got my ly6 08' 6.0...and im replacing the 4.8 with it...my question is will it run still if i dont have the plug in the cam phaser for the dod? my 4.8 does not have that...or could i swap in the stock 4.8 cam/timing cover in the 6.0 to convert it?need help asap...its on my 08' rcsb
06-10-2010, 07:14 PM
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guess i was right lol search button is my friend....
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.
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.
06-10-2010, 07:25 PM
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it has some other plug in on top of the timing cover and my 4.8 does not have that.is it not dod?lol damm why did gm have to make some b.s crap
its out of a 08'3500 express van
its out of a 08'3500 express van
06-10-2010, 07:37 PM
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I think that is for your VVT cam. You will need to swap cams if i recall. Maybe someone who has done this will verify, but i think you can just use your 4.8 cover and change cam.
06-10-2010, 09:29 PM
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alrite so if its vvt only...then ill be fine with the original lifters since its not the DOD...im confused i thought that cam phaser on the timing cover had to do with the DOD...but its VVT u say?? then whats the difference from DOD TO VVT...thanks for the help
06-11-2010, 03:48 PM
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DOD is the displacement on demand.. the 5.3 engines have that. its the 4 and 8 cylinder modes.. by deleting that u need to change :
-GM LS7 Lifters
-GM Valley Cover
-GM Lifter Trays
-GM Head Bolts
the vvt is the valve variable timing.. on the 6.0 and 6.2 , you could delete it by what i did..
LS3 crank sprocket
LS3 cam cover
LS3 cam gear
LS3 timing chain
LS3 cam gear bolt.
i changed the vvt lifters as well to Comp RS.. because i heard about many cases of lifter problems on vvt engines when doing a cam swap..
-GM LS7 Lifters
-GM Valley Cover
-GM Lifter Trays
-GM Head Bolts
the vvt is the valve variable timing.. on the 6.0 and 6.2 , you could delete it by what i did..
LS3 crank sprocket
LS3 cam cover
LS3 cam gear
LS3 timing chain
LS3 cam gear bolt.
i changed the vvt lifters as well to Comp RS.. because i heard about many cases of lifter problems on vvt engines when doing a cam swap..
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06-11-2010, 07:14 PM
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thanks for clearing that up guys...i dont know if i dont use the 4.8 cam for now i may wait it out and throw in a tr224 or similar who knows..thanks again
06-12-2010, 06:36 AM
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get one spec'd out by ed curtis his the best trust me http://www.flowtechinduction.com/
put the cam u want and thats it saves u time and money by going through the camswap again...
put the cam u want and thats it saves u time and money by going through the camswap again...