mitch69

I have been doing some research.. my 2000 ss has the ls1! It's stalk, I got ram air obviously and no cats... good eaxhasut.. jsut not sure which brand is the best for ls6 intake. .should I go with gm or slp?? And that job shouldnt take a shop more then what 2 or 3 hours?? I keep reading about different size intake like 92mm or 102 mm? Llike what ls6 intake should I get for my car for the most hp??? Do I need to uprade anything else??

mitch69

The fast 102 is expensive, like $850. SO thats why im wondering if the slp brand or gm brand is just as good? I want the intake that will bolt right on easily and gain me the most hp....

masterz28

iTrader: (8)

The GM and slp brand ls6 intake manifold is the same thing. An ls6 manifold is that, an ls6 intake manifold. When you talk about Fast intake manifolds, those are aftermarket intakes, which may be better pending on what has been done to the car or whats going to be on the car. Buy a used Ls6 intake manifold for 300 bucks here on the boards, install it yourself, save money. For a beginner maybe 3-4 hours.

00MaroonZ28

iTrader: (3)

best bang for the buck is the LS6 used and both are the same. If you want to spend the money, the FAST is the best and will see the most power gain out of the aftermarket intakes. A 92 would be fine for you depending on the mods.

orangeapeel

iTrader: (18)

Just get any LS6 intake with the following part numbers:
12561182
12573572

If someone tries to sell you one for cheap just make sure it isn't this one: 12556333

peterlawl84

iTrader: (12)

SLP models also come with EGR provisions

Emulsifide

iTrader: (22)

Just curious, is that an LS1 intake part number?

mitch69

Ok so what im reading here... the gm and slp intakes are the same thing and are jsut a stalk ls6 intake... so what would be a good aftermarket intake... in the future i plan to maybe do a cam heads and headers.. but for now shes bone stalk other then the exhasut and no cats... can someone clarify what egr provisions are? its osunding liek the fast 102 is the best intake for my car... possibly the fast 92? is there any othet intakes that arnt quite as expensive but are aftermarket performance intake... I really want to make sure I buy the right intake!

bww3588

iTrader: (49)

the FAST 102 will be fine for your car if you plan to do heads and cam in the future. if you plan to leave it STOCK, get the 90 or 92. no need for the bigger TB if your engine doesnt need it.

mitch69

Yeah that sounds good! So my question now is if i get a bigger aftermarket intake do i need to change the throttle body so it allows more airflow to the engine? if i do need to change the throttle body which is the one i should get? do you match it to the intake? I really apreciate all the help and knowledge im achieving from here! I really rreally want to get this mod done soon!

bww3588

iTrader: (49)

the 102 TB can be tuned to work with a stock cube engine, rather the engine can be tuned to work with the 102 TB. if you dont plan to do heads cam more cubes etc...you can put a 92mm TB on the 102intake and it will be perfect, but if i were doing it, which i am here shortly, is buying a 102 and 102 TB for the 370 and tune around it, then when i go to the 408 with spray, ill have the 102 it needs.

mitch69

so basicly a fast 102 wit h102 tb is the best setup... so say i got a fast 92.. would i match it witha 92 throttle body?? does the throttle body have the match the size of the intake.. liek if i havean 85 mm intake do i need 85 mm tb? or if i got 92mm intake do i need 92mm tb? and so on? Orrrrr should i even bother changing the tb if i change my intake??? is there anything else i need to know about changing to the ls6???

redbird555

iTrader: (14)

No you can use a smaller throttle body than what the intake calls for. A fast 102 and a 92mm tb for your setup would be ok. The 102 tb is really only intended if your doing a stroker motor such as a 408 or something. Even a 92mm intake and tb would be more than adequate but fast only makes the 102 now if you could find a deal on a 92mm intake setup for a deal id jump on it.

bww3588

iTrader: (49)

the only difference between the 78/90/92 and 102 is the size of the TB opening, and some very minor other design changes, that from what ive heard, dont effect performance. thats why FAST discontinued the 78/90/92...because the 102 is just fine for a stock cube engine.

mitch69

nice that sounds awesome!!! So Im thinking if i could find a good deal on a fast 92 ill go for it and probly get a 92 tb.. does anyone know what the stalk tb on my car is.. stalk ls1?? is it worth changing the tb? will it give me any advantages or gains? does anyone know any other minor things i can do to gain any hp? does changing over to synthetic actually give 10 more hp?

mitch69

hmmm well thats great to know!!! too bad the fast 102 is so expensive.. I mean by the time I buy the fast 102 and but a 92 or 102 tb im in the hole for almost $1500 is that $ well worth spent guys??? does that seem expensive???

bww3588

iTrader: (49)

factory is 75mm, the best thing you can do is port your stock TB or buy one already ported.

also search "free mods" and you will find little things you can do to help out.


the FAST is by far one of the best intakes and throttle bodies you can buy for the money. its useable on a huge array of engine combinations as far as stock cubes, to mild heads and cam to wild strokers. no doubt in my mind, this is the combo im going with.

99SSJarhead

iTrader: (2)

If you go the fast intake route, or a standard gm LS6 (not slp) also factor in deleting at least your egr, if not your air too.

as for which intake, how far do you plan on taking your build? Do you just want to add some power, hit the 500 mark, or are you looking for more? If so get a combination that meets your needs or slightly surpasses them, it'll be cheaper than buying something that is too great for your set-up and not utilizing it to its potential.

And yes you can play around with the throttle body size, just remember that going to0 large or too small will create choke points for incoming for incoming air without porting one or both pieces.

As well you'll have to look into a larger lid/maf/tubing or going the speed density route with larger piping, all of which will increase the cost of your build over time.

mitch69

Like i said i got the stalk ls1... no cats exhasut... i jsut want a huge hp increase... not looking to build a crazzzy race car but i defiantely would lvoe to get lots more hp out of my car! hence why im starting with the ls6 intake and tb.... thats why i wanted to know what intake and tb to use.... maybe in a few years ill put a cam in my car maybe heads but its gona take me al ong time to get the car where iwant it! I jsut want to make sure i get the right intake and tb that wil l work the best with my car!!! im hoping it will all bolt right it without mods!

APG12

iTrader: (25)

I'm still learning a lot of this stuff myself, but searching the forum will give you your answers.

Oh and its "stock" not "stalk"....