LY6 Swap
Jan 22, 2010 | 03:15 PM
#1
Thread Starter
TECH Apprentice
Joined: Mar 2007
Posts: 364
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From: Twin Cities, MN
LY6 Swap
I am going to take a look at a LY6 out of a 2007 Chevy 2500 HD. From what I have read, this should be a direct swap, but I just want to make sure that it will be. Truck is in sig. Also what should I make sure to get while I am there, I think I read that I need to get the L92 fuel rails because they are different than the 5.3s.
Last edited by CJ Hungus; Jan 22, 2010 at 03:33 PM.
Jan 25, 2010 | 06:12 PM
#5
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.
Last edited by rgvsierra; Jan 26, 2010 at 08:48 AM.
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Jan 26, 2010 | 12:21 PM
#8
Thread Starter
TECH Apprentice
Joined: Mar 2007
Posts: 364
Likes: 0
From: Twin Cities, MN
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.
Edit: I just saw iamkeniff's reply and figured I could just use my timing cover and an aftermarket single bolt cam. alright thanks.
Last edited by CJ Hungus; Jan 31, 2010 at 09:31 PM.
Jan 26, 2010 | 12:30 PM
#10
Thread Starter
TECH Apprentice
Joined: Mar 2007
Posts: 364
Likes: 0
From: Twin Cities, MN
I just don't know if I want to find a lower mileage engine or not, and if I'm ready to start breaking stuff