best intake manifold for the money?

1st off let me say that the 04 gto's all came out with the ls6 intake. i am still running my ls6 intake, heads and bottom end and am at 400rwhp and 390rwtq with a m6. and i have a 605 exhaust lift cam. i can go one size bigger cam before i will need to fly cut the pistons.

What ie everyones opinion on professional products 96mm intake and throttle body

I had one and upgraded to a FAST 102. It worked fine but took a lot of work to make it work right.

How much of a difference is the FAST intake vs LS6 intake on a h/c LS1?

what about the 102's? waste unless you have it feeding 400+inches?

For the 346ci motor, I think the LS6 is the best bang for your buck. FAST intake is $$$ for the gains you receive on the LS1 IMO

so in my case, having a factory ls6 intake, i shouldn't replace it until i build a big hammer?

I have a FAST 102 but I haven't really ran the car since the install. My car didn't come with a LS6 intake and I plan on building a 512 ci stroker in the future and didn't want to waste money buying a ls6 to later replace it with a FAST.

Another reason to get the FAST over the ls6 would be if you were to run really high duration and lift cam. The ls6 intake would work but you would see some gain from a FAST.

I need to jump in here. I will be doing a full bolt-on mod session soon, and I was wondering about the LS2 intake. It has'nt been mentioned here yet. It's a 90mm and was supposed to be better than the LS6. Anyone have any opinions on this?

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Originally Posted by LoneGunman

I need to jump in here. I will be doing a full bolt-on mod session soon, and I was wondering about the LS2 intake. It has'nt been mentioned here yet. It's a 90mm and was supposed to be better than the LS6. Anyone have any opinions on this?

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Actually the flow on the ls2 intake is worse than the ls6. However you can get a 90mm ls6 which flows better than both. There is a company the takes the snout off the ls2 intake and puts it on the ls6 intake. That is the route I would have gone if I had a ls6 intake on my car.

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Originally Posted by 98TransAmWs-6

Actually the flow on the ls2 intake is worse than the ls6. However you can get a 90mm ls6 which flows better than both. There is a company the takes the snout off the ls2 intake and puts it on the ls6 intake. That is the route I would have gone if I had a ls6 intake on my car.

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Is there some link that we can have to to look at this modded intake?

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Originally Posted by Whamhammer

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Originally Posted by 98TransAmWs-6

Actually the flow on the ls2 intake is worse than the ls6. However you can get a 90mm ls6 which flows better than both. There is a company the takes the snout off the ls2 intake and puts it on the ls6 intake. That is the route I would have gone if I had a ls6 intake on my car.

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Is there some link that we can have to to look at this modded intake?

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http://www.tpis.com/parts/view/39

It's $799 if you don't supply the intake.

Anyone know what it would cost if you supplied the intake?

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Originally Posted by LoneGunman

Anyone know what it would cost if you supplied the intake?

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No clue but if I had to guess it would knock $200-350 off the price.

I wish they had shown a bigger picture than that. I'm trying to figure out what they do that merits $400+ for just the snout install.

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Originally Posted by Whamhammer

I wish they had shown a bigger picture than that. I'm trying to figure out what they do that merits $400+ for just the snout install.

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Well they have to make sure it doesn't leak, most of it is probably labor plus the cost of an ls2 intake for the snout. I know they use an epoxy to secure the snout. You could always email or call and ask.

Funny thing is I bought my fast 102 new for $24 more than the 90mm ls6 intake costs without supplying the intake.

Yes, it does seem very pricey. I wonder what kind of flow gains one could really expect over the Fast 102, or even the stock LS6.

I also wonder how hard it would be to hollow out the LS6 manifold and put a thin plate that will accept a larger throttle body.

If you're a bolt on car, an ls6 is plenty.
If you're a cam/head car, either a FAST 90/90 or FAST 92/92, ported if possible. Everything else pretty much either has some sort of fitment issue, are lead anchors, or/and are aluminum and act as giant heatsinks

Just to give you an idea of the gains you'd be looking at:

with the stock ls1 intake and bolt ons I made 335 to the wheels. 380 to the wheels with my cam and ls1 intake. Picked up a ported FAST 92 with a 92mm throttle body and made 420ish to the wheels. A proper intake can give you just as much of an hp gain as the cam or heads, don't skimp out.

The FAST 102 is overkill for a stock cubes ls1, even with heads and a cam the gains will be minimal. And without heads it could actually hurt your numbers.

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Originally Posted by LeadFarmer

If you're a bolt on car, an ls6 is plenty.
If you're a cam/head car, either a FAST 90/90 or FAST 92/92, ported if possible. Everything else pretty much either has some sort of fitment issue, are lead anchors, or/and are aluminum and act as giant heatsinks

Just to give you an idea of the gains you'd be looking at:

with the stock ls1 intake and bolt ons I made 335 to the wheels. 380 to the wheels with my cam and ls1 intake. Picked up a ported FAST 92 with a 92mm throttle body and made 420ish to the wheels. A proper intake can give you just as much of an hp gain as the cam or heads, don't skimp out.

The FAST 102 is overkill for a stock cubes ls1, even with heads and a cam the gains will be minimal. And without heads it could actually hurt your numbers.

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Can a person even get a FAST less than a 102 these days? I thought the 92 was discontinued.

I plan on doing a head/cam build on my '02 LS1, unless LS3 crate prices drop dramatically.

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Originally Posted by Whamhammer

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Originally Posted by LeadFarmer

If you're a bolt on car, an ls6 is plenty.
If you're a cam/head car, either a FAST 90/90 or FAST 92/92, ported if possible. Everything else pretty much either has some sort of fitment issue, are lead anchors, or/and are aluminum and act as giant heatsinks

Just to give you an idea of the gains you'd be looking at:

with the stock ls1 intake and bolt ons I made 335 to the wheels. 380 to the wheels with my cam and ls1 intake. Picked up a ported FAST 92 with a 92mm throttle body and made 420ish to the wheels. A proper intake can give you just as much of an hp gain as the cam or heads, don't skimp out.

The FAST 102 is overkill for a stock cubes ls1, even with heads and a cam the gains will be minimal. And without heads it could actually hurt your numbers.

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Can a person even get a FAST less than a 102 these days? I thought the 92 was discontinued.

I plan on doing a head/cam build on my '02 LS1, unless LS3 crate prices drop dramatically.

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They started making it again I believe since I saw them for sale on Texas Speed. But other than that you could find them used. I don't think a 102 will hurt performance at all. Yes you won't see as much gain without heads, cam, or more cubes. I am going to be building a 500+ ci so that is one reason I went with the 102.