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What is required to swap Gen IV engine into Gen III truck?

Old 06-09-2016, 08:42 PM
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Default What is required to swap Gen IV engine into Gen III truck?

Just wondering what all is required to put a gen IV motor into a gen III truck. Any advice would be helpful. Thanks!
Old 06-09-2016, 08:52 PM
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I won't have all the answers but a few.

To stick a 07+ gen 4 motor in your need to use a 24x to 58x converter box or swap the reluctor wheel on the crank. Something to make the knock sensors work because they are on the side of the block. AFM/DOD delete kit, new cam, timnig chain, cam gear, valley cover, front cover if removing VVT. A custom tune for sure.
Old 06-09-2016, 09:26 PM
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Originally Posted by FFDP
I won't have all the answers but a few.

To stick a 07+ gen 4 motor in your need to use a 24x to 58x converter box or swap the reluctor wheel on the crank. Something to make the knock sensors work because they are on the side of the block. AFM/DOD delete kit, new cam, timnig chain, cam gear, valley cover, front cover if removing VVT. A custom tune for sure.
I was thinking a 2004.5-early 2007 because I don't want an afm motor.
Old 06-09-2016, 09:32 PM
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Convertor box, cam sensor extension, knock sensor extension, tap side of block for knock sensors I think that's it. Not hard at all I'm swapping a gen 3 v6 to a gen 4 v8.
Old 06-09-2016, 09:38 PM
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that early of a gen iv engine could have the knock sensor provisions in both the valley and the side of the block... Some sort of transition thing.... That being said you may want to check the block and the crank to see if it is a 58x or a 24x, some of the transition engines had the older style 24x reluctor in them, iirc!!
Old 06-09-2016, 09:44 PM
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Originally Posted by Lane_Hesser
I was thinking a 2004.5-early 2007 because I don't want an afm motor.
If you are looking for those year motors, then nothing special is needed at all.

The motors are all basically the same for 99-07(classic), none of them will have AFM/DoD or VVT. Truck motors that is, some SUV's got AFM/DoD but they are considered gen 4 motors in those years.
Old 06-09-2016, 09:46 PM
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Those years were tb, rainier, envoy werent they...for gen iv!
Old 06-09-2016, 09:55 PM
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Yeah and the SAAB's got those early GEN 4 motors too.
Old 06-26-2016, 12:37 AM
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Just got through putting an ly6 into an 05 silervado. Pm me if you have any questions
Old 07-14-2018, 12:05 PM
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Default LY6 question

Originally Posted by Thoagland
Just got through putting an ly6 into an 05 silervado. Pm me if you have any questions
Ive been searching for ways to do this and came across this post and looking for help I have an 02 Silverado with the 4.8 and I also have a LY6 from an 09 Sierra. I have everything for the LY6 from my donor truck including full harnesses, pedal, and even to the cluster. What can I do to pull this swap off? Thanks in advance
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