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Boost on aluminum 6.0

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Old May 11, 2021 | 07:54 AM
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Default Boost on aluminum 6.0

I had a lq4 with a turbo cam and ported 317,and twin 62mm turbos in my fox.I sold the motor out of it and got a 6.0 aluminum motor that was built for nitrous.The aluminum 6.0 has forged pistons,rods,trick flow heads,and nitrous cam.The guy I got it from said it wasn’t a good motor for me to put in my car with turbos cause it being a 6.0 aluminum block?Whats y’alls thought on should I just put spray back on it,or my twin turbo set up.It run a 6.05 in 1/8 with 200 shoot of nitrous in the truck it came out of.
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Old May 11, 2021 | 08:02 AM
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The aluminum block will be fine, It should take all of what a couple 62mm turbos can throw at it.

Check your compression ratio, most nitrous motors are pretty high compression.
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Old May 11, 2021 | 08:22 AM
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The motor supposed to be 10.1 comp,and the turbos are 6262 Precision.What kind of power could I get out of it safely,and should I take the btr nitrous cam out and go with turbo cam.Id like to run low 6s or high 5s.Just trying to decide if I should buy a nitrous kit and put on it or run it with my turbos.This is my street car with full int and no cage.Im building a caged mini tubbed one I plan on putting my turbo stuff on when other car is done.
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Old May 11, 2021 | 10:42 AM
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You're not going to have any problems out of it being an aluminum block.
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Old May 11, 2021 | 10:59 AM
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"What kind of power could I get out of it safely"

What fuel? What IC? Who's tuning? The plugs will tell you how far you can go as you creep up on it. I'd run the current cam and see how it responds. Post cam specs and get folks wondering how it will do.
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Old May 11, 2021 | 11:20 AM
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Above 1200whp the aluminum 6.0 starts fretting the main caps and eating the mains. There's not enough strength between the mains and the bottom of the sleeves.
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Old May 11, 2021 | 02:27 PM
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The cam spec are 251/266 .62X"/.595" 112+4.I planned on just pump gas.On my lq4 I had in it I would run c16 when turned the boost up.It has a Huron speed ic that comes with their fox twin turbo kit.Im in the process of building one with a cage and mini tubs.I bought the motor to just put it in and play without the turbos,but it would be easier to put it back like it was till I get my other one finished.I have a iron 6.0 and aluminum 5.3 I was going to build one of them for boost and put it in caged car.
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Old May 12, 2021 | 08:47 AM
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I would change the cam and send it with turbos.
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Old May 12, 2021 | 10:48 AM
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I just want to point out how ridiculous it sounds for someone to say that an engine running N2O won't handle turbos. As if any given HP worth of nitrous is any gentler than the same HP worth of boost.
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Old May 12, 2021 | 11:23 AM
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Originally Posted by LetsTurboSomething
I just want to point out how ridiculous it sounds for someone to say that an engine running N2O won't handle turbos. As if any given HP worth of nitrous is any gentler than the same HP worth of boost.
They're talking about compression and camshaft more than they are durability or reliability.
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Old May 12, 2021 | 11:24 AM
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That is why I was asking.I thought if it was built to handle nitrous then some boost should be ok.On my lq4 I was on 17 pounds of boost and it was stock rods and pistons.But the guy that built the motor let on like if I turbo it that it wouldn’t last.My first thought was put a twin turbo cam in it and have about 10 or 12 pounds of boost and it would stay together for awhile with a good tune and make decent power
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Old May 12, 2021 | 01:45 PM
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Originally Posted by boostedstang
That is why I was asking.I thought if it was built to handle nitrous then some boost should be ok.On my lq4 I was on 17 pounds of boost and it was stock rods and pistons.But the guy that built the motor let on like if I turbo it that it wouldn’t last.My first thought was put a twin turbo cam in it and have about 10 or 12 pounds of boost and it would stay together for awhile with a good tune and make decent power
I'd just put a turbo cam in it and let it eat. 10:1 with some boost is about ideal for either Pump or E85. Obviously the E85 will let you go farther, but either will work. The aluminum block won't be the limiting factor until well after 1000whp in my opinion. At that point you might lift the heads with either an alum or Iron block. The 4 bolt head design becomes the limit before the block does.
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Old May 13, 2021 | 11:07 AM
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huge cam
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Old May 14, 2021 | 10:34 AM
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Originally Posted by Pro Stock John
huge cam
Yuge lol.
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Old May 15, 2021 | 06:06 PM
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1. Isn’t it true the aluminum LS motors can’t retain head gasket seal above 1k hp?
2. would a S480 be about right for a 6.0? Or smaller?
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Old May 16, 2021 | 02:08 PM
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Originally Posted by 64post
1. Isn’t it true the aluminum LS motors can’t retain head gasket seal above 1k hp?
2. would a S480 be about right for a 6.0? Or smaller?
Keep timing conservative and you shouldn't have issues with head gasket seal on the aluminum blocks around 1000rwhp. e85 and let it eat.
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Old May 17, 2021 | 09:12 AM
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Originally Posted by 64post
1. Isn’t it true the aluminum LS motors can’t retain head gasket seal above 1k hp?
No. An aluminum 5.3 with stock gen 4 head gaskets has been ~1500 HP.
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Old May 17, 2021 | 09:28 AM
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Originally Posted by 64post
1. Isn’t it true the aluminum LS motors can’t retain head gasket seal above 1k hp?
2. would a S480 be about right for a 6.0? Or smaller?
1 - Not true. Lot of people make 1k or more with all kinds of gaskets given fueling and tune is good. As mentioned above the aluminum blocks start to move a 1k and higher and can start to chew up the mains.
2 - Depends on what you want to do or goals, but yes an s480 would generally work well on a 6.0.
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