FrankieD

iTrader: (9)

I'm starting to get things ready to go FI this spring and I'm wondering if it's worth upgrading from Ported Stock TB/Stock LS6 intake to a: Fast 90/90, Fast 92/92 or a FAST 102/102 setup. I will be using ported 317 heads with my D1SC setup. Cost for upgrading ranges from $1000 to $1400. Will I notice any significant HP increase by stepping up to any of the FAST setups?

Packy

iTrader: (11)

IMO you could buy a smaller pulley that costs anywhere from $50-$150 and that would gain you more than the cost for a FAST Intake.

Realistically, I would guess maybe 15-25 rwhp over the LS6 intake. I would like to see some research in this area. I have searched it few times and found only posts bitching about them cracking and others with heresay.

got-a-ls1

iTrader: (12)

just run an extra pound or 2 of boost and that will make more then the fast ever would. not worth the 1400 bucks. fast intakes are good for naturally aspirated cars. fi just not worth the cost

stevieturbo

Stick with the LS6 and put your money elsewhere

allout06

iTrader: (11)

Spend the money on a meth kit

phatasp

iTrader: (11)

Ok so you,ve spent money on a meth kit ,pretty much maxed out on boost (supercharger) would it be worth it to switch to a fast intake?

82cetuner

iTrader: (9)

if you got th money and want to get the maximum potential out of the engine then yes.

but you are not ganna see a 25rwhp increase even on boosted applications.

I would guess 10 to 15 is the most you would see. some people have reported no gains at all and some reported actual losses, it really depends on the setup.

phatasp

iTrader: (11)

I agree, Just trying to get the most out of what I have.

stevieturbo

What is your setup ? What sort of power are you making ?

phatasp

iTrader: (11)

Forged 347,Vortech t-trim supercharger with 15lbs boost dart heads,ls6 intake,making about 575rwhp.

stevieturbo

Good question.

It's highly doubtful the LS6 intake is posing any restriction at that power level.

That's not to say the FAST or other intake might not offer an improvement though. If they do, it will be very small. Value for money is the question.

If you could pick one up cheap and sell your own to offset some cost, maybe it is worth it.

Or maybe a different cam, spin the blower a bit faster, more efficient intercooler etc etc Or just fit a bigger blower lol

subarubill96

iTrader: (9)

people have gone 8's on the LS6 manifold. Put your money to work elsewhere IMO.

phatasp

iTrader: (11)

Intercooler and or better heads was my next thought. Really would like to see about 650rwhp

stevieturbo

Intake will certainly never make that happen, nor will alternative heads.

Just spin your blower faster or fit a bigger blower and possibly the cam.

What cam have you ?

Urban Legend

iTrader: (5)

LS6 served me well at 600 rwhp.

tomz28

iTrader: (20)

I've made 630rwhp with a LS6 intake and cam. On 12psi stock motor this was a m6 car turbos, and meth. Don't waste the money.

phatasp

iTrader: (11)

Brute force supercharger cam. Dur @ .050 232 int 240 exh

Lift .595 int .608 exh

Lobe Sep 115.0

allout06

iTrader: (11)

Y did u only make 575rwhp on 15psi? I made 571 on 5.5psi. we're u on a mustang dyno? I figured Ud be makin 650ish already

RooRnZ28

iTrader: (14)

Same here, put the money toward something else

lmt0705

iTrader: (7)

I made 811 thru a 4l80 with my ls6, I was asking the same question last month and no one sees anything worthwhile imo. I was at 15 psi with the worst exhaust system ever. That's where I'm spending my money.