Pontiac GTO 2004-2006 - Intake size?

How can you tell what size intake is on a car? I have an 04' goat and I was told that they have an LS6 intake. I just bought my goat tuesday and i cant get enough!! Hope to start modding soon and make some noise!

How can you tell what size intake is on a car? I have an 04' goat and I was told that they have an LS6 intake. I just bought my goat tuesday and i cant get enough!! Hope to start modding soon and make some noise!

You have a 78mm on your GTO....

Is that a question or statement? If you are talking about the TB it's the stock TB that says LS1 across the top. I don't mean to sound stupid, I'm just new and still trying to figure things out.

Measure the mouth of it and see how big it is.

If it's the factoy intake/tb, it's 78mm.

So how so I know which intake manifolds I have?

you have the ls6 if your car is bone stock...numbers matching

So how so I know which intake manifolds I have?

if your throttle body has the "LS1" sticker on it, its a stock TB, which is 78mm

if your TB is stock, then most likely your Intake Manifold is stock, a stock LS6 intake manifold (which GTOs comes from the factory) is black, and the size matches the factory TB, being 78mm..

and if you wanna know what it looks like, pop your hood and take a peak.

If you measure the stock LS1 TB it's 75mm

Thanks guys. I accidently posted that twice from my phone. How tuff is it to put headers on a goat?

Pass side is a 30min job...

drivers side is a different story LOL. But its really not that bad.

Definitely worth it.

Any preference on brand or size? I was told to stay away from SLP and not to go over a 1 3/4 unless i was planning on stroking the engine. A friend of mine has an SS with SLP l/t and it sounds pretty sick.

Nothing particularly wrong with SLP. They come coated and at the time I got mine (a long time ago) they were a little over $850 with catless mids. The rap against them is they are a lower grade of stainless but stainless none the less and the connection points are slip fittings which can be tougher to make leak proof and take apart. They make good power and I don't think the HP difference is going to be large against other brands like Kooks. I had 3 bolt flanges welded to the collectors and midpipes so they seal great and are easy to take apart. If the price were close I might have gotten something different but take into account coating when comparing prices. Coating is more a performance and bay heat thing than an appearance thing so I think it's important.

I will keep that in mind when i start shopping around. Are the ls2 parts off a 05 -06 goat swappable with the 04 ls1? A guy up the road from me said he would sell me his ls2 cam for $50. Will it fit in the 5.7?

A guy up the road from me said he would sell me his ls2 cam for $50. Will it fit in the 5.7?

Don't bother, it won't make a difference.

If he's selling his heads, get those. Otherwise that's pretty much it from the LS2s.

So how so I know which intake manifolds I have?

Soy this is hows u's konws whats itakes madifols u habe. Lok ats tha kolor an if its blck then u habe a LS6, if tits chubby orenge then tits a LS69. They habe a willy big hole in frunt tho. mmmmmmmkkkkkk.

Ther is also anoder in ur earl pan tat suckes air from indsiiide modor and brungs to top to feed the LS6 itake. It a knice setuup, b glud u habe it






:turd::turd: