5.3 or 6.0 or 6.2 + Boost ???
06-12-2012, 03:24 PM
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5.3 or 6.0 or 6.2 + Boost ???
Here is my dilemma, I currently have a 6.0 L76 in my 07 Vortec Max. I will be adding a Trick Intercooled turbo kit to it VERY VERY soon. I have a 2011 5.3, the 6.0 in my truck and a 2011 LS3 on the engine stand. Here is what I will do to any of the above engines. I'm looking to add a LS9 cam, delete the dod and vvt on the 6.0 or 5.3. Add ARP head bolts and re gap the top piston rings to have a .028 gap from stock.
(1) Do I swap out the 6.0 for the 5.3 with a 66mm or 76mm turbo?
(2) keep my 6.0 with 76mm.
(3) Swap in the LS3 with the 76mm.
I will be also swapping the 4L70 for a 6L80 that I already have. My truck came with 3.73's from the factory so I was thinking maybe the little 5.3+BOOST will be fine. Any of the above will be tuned and will be always be running on 93 octane cause this will be my weekend truck. I will be running 1LB less boost then it can handle with the 93 octane to have a little margin of error on any of the above combos. I am not looking to run Meth. I'm leaning towards the 5.3LC9 or 6.2 LS3 to cut out some down time cause I can do all the mods to it and just swap it in the truck in a day.
Which would you choose and why?
(1) Do I swap out the 6.0 for the 5.3 with a 66mm or 76mm turbo?
(2) keep my 6.0 with 76mm.
(3) Swap in the LS3 with the 76mm.
I will be also swapping the 4L70 for a 6L80 that I already have. My truck came with 3.73's from the factory so I was thinking maybe the little 5.3+BOOST will be fine. Any of the above will be tuned and will be always be running on 93 octane cause this will be my weekend truck. I will be running 1LB less boost then it can handle with the 93 octane to have a little margin of error on any of the above combos. I am not looking to run Meth. I'm leaning towards the 5.3LC9 or 6.2 LS3 to cut out some down time cause I can do all the mods to it and just swap it in the truck in a day.
Which would you choose and why?
Last edited by GONEB4U; 06-12-2012 at 10:04 PM.
06-12-2012, 06:38 PM
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I already have the LS9 cam. The LS3 is my spare engine for my 69 Camaro and is NOT forsale if that's what your getting at.
Last edited by 03sierraslt; 06-12-2012 at 07:08 PM.
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06-12-2012, 08:22 PM
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Sorry but I already received 2 pms asking me to sell them my LS3 if I'm not going to use it. I'm shooting for 500whp minimum to 600whp max. I'm starting to lean towards my 6.0 in the truck and my tuner suggested that I leave the rings alone at these power levels. What do you guys think?