LS12SEC

I have a 2001 Trans Am with a stock LS6 intake. I really want a FAST intake and throttle body thought. Should I sell the LS6 and get the FAST or just keep. What is the power difference?

Ric

If you're gonna stay stock, or even bolt-on for that matter, your LS6 will do fine. The FAST intake will only really help if you're going big-inch, FI, or wild heads/cam.

hondakiller

iTrader: (3)

car in sig picked up 2mph with the fast 90/90 over ls6/ported tb. s1 heads and a tr224 cam. the fast 90/90 will make more power, the question is how much (which depends on motor and mods) and whether its worth it for you to spend the money or not to gain said power.

J E T

iTrader: (5)

The 90/90 will give you more HP than the LS6 and your stock TB, but the more mods you complement the 90/90 with, the more power it will help you make (i.e. heads/cam, S/C, etc.)

Blacker

iTrader: (3)

Would the FAST 90/90 be worthwhile over the LS6/Ported TB with stock heads(803) and F10 Cam(228/228)? I am still using the stock LS1 Intake(1998) and will be upgrading soon.

Brandon Boomhauer

iTrader: (10)

The FAST will give you more power for sure Blacker, if/when you step up, it will grow with you.

If you can afford the cost, do it, if you can afford to have it port matched, go ahead and have that done aswell.

There always seems to be a nice group purchase going on with these intakes and TBs (fast or Nick Williams). I'm saving up for a 90/90NW setup right now, but it will still be a way down the road.

98transguy

iTrader: (7)

like the rest of them said it will gain more power with the more mods that u do to your car , and we all know its never fast enough , so...... what are u waiting for..lol

98Z28MASS

iTrader: (6)

I say get the ls6 intake. If you think about it the ls6 will net you some nice gains over your stocker and will only cost about $300 used. Now a 90/90 fast/nw TB is gonna cost you approx $1200-$1300 if buying new and depending if its a GP or not. Thats almost $1000 for a few extra HP. I say get an ls6 and get some heads with the balance, you will net way more power, or get a nitrous kit. Either way you will be better off. The fast intake and ther nw tb are both very nice pieces but not the most cost effective way to make hp with your current setup, thats just my opinion though. Good luck with whatever you choose!

GREATWALLTA

I say stay with your LS6 intake, they are the best intake that GM designed up to date and will be good up to 600 HP. Save the money for the FAST set for something else.

Rudolph

iTrader: (1)

What is up bud? Do not tell me that you have not even buy the LS6 intake???? I remember the last time, in the ls2 forum, where you said you were about to buy the LS6 intake, haha! Hey bud, you have been losing lots of hp

Cop Car

iTrader: (14)

stick with the LS6

*unless* you plan on spraying it (has blow out pannels) or putting in a very large (Trex, g5X3 etc) cam into it. the intakes are expensive and you would get better gains out of long tubes, or out of a cam swap or a head swap, id do all those things before you start spending $1400 on an intake and throttle body, do it later

Rudolph

iTrader: (1)

I say that the 90/90 would justify the big quantity of money, as long as you have a much more considerable quantity of air going into the block to be turn into HP

BTW, i have seen cars, get almost 30 rwhp, with a porte 90/90 from Tony Mamo I would say, get H/C, or FI, and then go for the FAST kit

Blacker

iTrader: (3)

Always seems that something comes up. Like the blown 10 bolt and the addition af a 12 Bolt. My Midwest TC **** the bed and replaced that with a SS4000. Finally, everything seems to be fine and need to ditch this LS1 intake.

Tony Mamo @ AFR

iTrader: (13)

Why do the same FAST / LS6 threads always show similar responses like NO-ONE reads the other threads that ask the same exact question. The question is not whether the FAST is better than an LS6, the question is do you think the results are worth the price of admission. Forget about all those responses quoting the FAST "only showing gains in a more hopped up larger displacement engine" because that is a bunch of malarky (when's the last time you read THAT....LOL). Ive personally bolted them on STOCK LS1 engines and have witness 10-12 HP gains with no other changes....more than once and every time with the exact same results. Whats more interesting is that they show similar gains on H/C engines as well (not more or less). A FAST intake reduces the restriction in front of your cylinder heads, in a sense fooling your engine into thinking you just bolted on a better head....end result equals more power....its that simple. A properly ported FAST intake reduces those restrictions even further, and as you would guess, the net result of that modification is even more power....same basic philoshophy.

Whether the gains are worth the coin spent?....Now there is something possibly worth debating about, but that all comes down to how high you put a price on horsepower and trying to stay a step ahead of the guy in the next lane. But make NO mistake about the fact that a FAST intake will make more power than an LS6 no matter what the application is.

By the way, Im going to be out of town for a few weeks so unfortunately I cant further contribute to this thread, but if it's still around when I get back will certainly take a look at the direction it headed.

Regards,
Tony

RollinSScamaro

iTrader: (25)

Danny stick with the LS6 for now.. Wait till after you get the head/cam and bolt on's.. other than that $1200 will not be a good "horsepower per dollar" mod.. but once you mod it up more you could see 10-20+ horse out of the LSX set up..

Rudolph

iTrader: (1)

I think, now is the chance for you to install a ported 90/90, IMO is worth the money, once that you have some mods.

transam1998

iTrader: (5)

If you plan on future mods, FAST is the way to go. Pricey, but good!

J E T

iTrader: (5)

People complain about the cost of the 90/90 for the power it gives, but when you really think about it...how much did they pay for their "full" exhaust setup? Most people pay on an average for a "full" exhaust setup around a grand, some even pay more (if they go stainless headers and GMMG, Borla, Corsa, Bassani, custom true duals, etc.). Most "full" exhausts setups will only net you 30-50 HP. People say the 90/90 is a bad HP for the dollar mod, but it's no better than what a "full" exhaust gives you HP for the dollar.

Normal cat-back exhaust: $400
Y-pipe: $125
Headers: $400
Accessories: $100

That's a grand on a rather cost effective "full" exhaust setup, about a grand.

FAST LSX 90 manifold: $800
FAST LSX 90 TB: $500

That's $300 more than a typical exhaust setup and the gains are almost the same. So I dunno why people complain about the HP for the dollar, when it's almost the same gains as a "full" exhaust. Am I the only one who sees it this way?

RollinSScamaro

iTrader: (25)

yea but coming from LS12Sec perspective.. he is nearly bone stock right now.. with no cats and a magnaflow catback.. he is way better of to spend that $1300 on a cam and work at getting some heads.. and once he gets full bolt on and then adds the fast 90/90 combo.. THEN it will defaintely be worth the money! but for the time its better to start with headers, cam, heads, ect.. and then work your way up!

Good point about the exhaust costs vs. the Fast 90/90 though! good way to think about it! It really isn't that costly! just need to look for GP's and sales!

Reject

iTrader: (24)

actually.....lol....if you read over at the FI section of this site, they really dont prefere the 90/90 combo as much as a single plain/ls6 manifold. reason being is that the 90mm TB some times ends up gettin stuck at WOT under a large amount of boost. the boost ends up pushing the blade and not wanting to let go! but you dont have to worry about that. thats a 4000 (turbo!!! from hi flow turbos, ask for marko) expense that i dont see you doin anytime soon, specially since you have to upgrade the whole drivetrain/fuel system...

and before anyone starts to get y about me posting this, there was mention of FI earlier in this thread