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    What are some good 4.6 Heads

    there is one aftermarket head and that is the svo. I don't know if that is considered aftermarket or not but the are supposed to flow really well and on the #'s I have seen the make more power than PI heads but the cost a lot more money. you best bet would be to get you heads P&P with bigger valves
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    what should i buy first?

    The very first thing I would do is a short thorw shifter. his will help save you 1000 dollars on a trans. rebuild. next do long tubes,x-pipe and magnaflow mufflers if you are lookin to get the most performance out of it. after you do the exhaust put a drop in k&n af and PI cams and PI intake...
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    best place to get a build-up bottom-end

    sean hyland and dss prep their blocks to the extreme. but they also cost the most. if you are wanting between 450-550rwhp then get one from vt. vt is the most resonablypriced and they hold a lot of power.
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    2v to 4v head swaps

    your best bet would be to drop a complete 03 cobra motor in your car because it will take you forever to piece everything together.
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    What's the difference between blower cams and n/a cams?

    most cams will run you about 600. if it is custom it will probabl be about the same amount. also you have to add in about another 250 bucks for the tools and the valve springs.
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    Getting air out of coolant system

    I would also drill a hole in the thermostat to reduce cavitation in the motor. this will help your motor cool a lot better.
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    Nitroused 5.4 Is DONE! Many Pics Inside! Got 1 Question NEED answer Now!

    that is tight. What all is done to the motor. how hard was the install. you get prop in my book. 5.4 and dohc you got the best of both worlds.
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    Flows drone with X-pipe?

    your going to have drone with the flows. if you want to get rid of the drone and get a better flowing muffler then get magnaflows. I have had them and I liked them just liked the flows a little better.
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    UCA's need to find some alternatives cause of exhaust

    maximum motorsports also makes a uca that looks similar to a steeda one.
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    big block swap

    yeah I see it isn't a practical. I am even in the process of putting a mitsubishi starion turbo motor in an 88 dodge ram 50. I am seeing where you are going with this I was just wondering if you was wanting the streetability of it.
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    computer help

    you will definately need a custom burned chip. all a diablosport can give you is a bump in timing and a little bit of fuel curve adv. If you live in the east of the us the I know t&j performance in atl. and modulardepot do a very good job at tuning cars.
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    UCA's need to find some alternatives cause of exhaust

    all of them are the same. the uppers don't have spring perches on them. They are all of a basic design.
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    big block swap

    I am taking it you aren't going to make a daily driver out of this. If you are you must be real old school to take a 20+ mpg vehicle and put a heavy 5- mpg bb in it. I have never seen a carbed motor make over 450hp that you can drive every day. I know each is to its own but by the time you get...
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    big block swap

    If you are going to do that I will tell you from first hand experience. The computer will have to be a F.A.S.T computer with gm sensors. they work the best. You will have to modify the k-member and the trans. cross member. The 4.6 is actually widder than most big blocks. you will have to call...
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    Whats the deal with Mod motors and weather?

    It is just like all other cars. if it is hot and humid outside then it isn't going to run no where near its full potential.
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    IAT Sensor Missing on 03 GT

    on the late 01+ cars the iat is built into the maf sensor. if you look at the plug in for the maf then you will notice it has more wires.
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    What just happened!? >_< (pic inside)

    LOL dude did you have you a/c on. if so then it is you air conditioning. if not then it is just condensations built up in the exhaust.
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    96GT performance upgrades

    Ok first of all pullies is one of the best bang for the buck mods on a 4.6.they used to make you battery charge funny and things like but not anymore because of r&d. I have had mine for over a yearand never had any problems.. The gears will acually slow you down at the track if you don't have...
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    wow. please educate me. 4.6 2000GT

    just buy a chiltons a read it from front to back and you will know how to change spark plugs.