docwyte

iTrader: (4)

What's a ported FAST 90 worth nowadays? I see unported ones listed for $750. So is a ported one worth close to $1000?

At that point it seems strange to pay that much money when the FAST 102 can be bought new for less...

thunderstruck507

iTrader: (18)

Depends on the buyer you find...people are still under the illusion that a 90/92 is better for a ls1 because a 102 is "too big".

Also some people just don't want the extra install hassles of the 102mm since it doesn't gain very much over a 90/92 for a stock cube car.

docwyte

iTrader: (4)

I'm not selling, I'm looking to buy. Just wondering if I should bother with the FAST 90/92 since I can pick up a new FAST 102 for less than I've seen ported 90/92 go for. Even unported 90/92's are selling for close to what the 102 costs new...

I've got a FAST 90 throttle body, would it work with the 102?

HioSSilver

iTrader: (8)

90mm tb are suppose to fit 102's. I don't know if anyone has ever tested a 90mm fast vs 102 fast on a 5.7 or not. I would like to know the results if they did.

BrntWS6

iTrader: (7)

There was a unported, unpainted 92 that sold on here for 1k!!.....crazy money. You will save a little for fuel rails on a 92, and you have to mess with the TB hitting the water pump if you get a 102 TB. I think a 90/102 will fit, but I have seen pics of the TB gasket hanging out on the bottom

I think Vengeance sells 102's ported for 1k.

needtransam

iTrader: (2)

is the fast even worth it? i mean compared to the ls6 the money to hp ratio is not worth it or is it?

dodson55

iTrader: (18)

its all in how you look at it switching from a ls6 with ported tb to a stock fast 92/92 i picked up almost 4 tenths on the motor with a half tenth worst 60ft time only change was the intake tb and re tuned the ve table for the new intake i bought my fast with a nick williams tb for under a grand so i think it was a worthwhile upgrade

LS1 proj

Wouldnt a ported LS6 be the same as a fast 90 just about?...

docwyte

iTrader: (4)

Well I've got an intake restriction on the top end, I'm pulling a vacuum in the higher rpm's. That's with my stock MAF, ported stock throttle body and LS6 manifold.

I've gotten my hands on a FAST 90 throttle body and I'll either get an 85mm MAF or do a speed density tune. The issue is the manifold. Putting a 90mm throttle body on the stock 78mm LS6 intake won't help me at all.

I missed out on an unported FAST 90 intake, paid the guy even, but he'd sold it without telling me. He did refund my cash, but I'm still left looking for another one.

I just feel strange paying brand new FAST 102 money for a used FAST 90.

It's $350 to have a 90mm snout put on my current LS6 manifold. Or I buy an LS2 manifold, fuel rails and injectors, then need to clean up the manifold. Or I try to find a FAST 90/92 intake manifold for a decent price or just get a FAST 102 and use the smaller FAST 90 throttle body I already have with it.

Which option would you guys choose? I'm not thrilled with adding a 90mm snout to my current LS6 manifold because then I can't recoup any money by selling it...

thunderstruck507

iTrader: (18)

No. Porting is virtually useless on a ls6, unless you mean the 90mm snout conversions, which is helpful but still does not meet the capabilities of a stock Fast intake. A properly ported Fast will be even better still.

But if you mean just someone taking their sanding rolls to the opening and the runners of the ls6 intake...total rip off from the results I've seen posted.

BrntWS6

iTrader: (7)

If you can't find a deal on a 92 just buy a new 102 and use your TB. I'd just do a little research on mating the 90mm TB to the 102mm intake. I know people have done it, just not sure how well it fits to the intake snout or if an adaptor is needed.


I just checked E-bay, and there is a guy selling a Mamo ported 92 for $1600!!!

dr_whigham

iTrader: (49)

^^ That's nothing. I posted a WTB ad knowing full well that I'd get some crazy ****.... but I had a guy offer to sell me a FAST 92 with a 92 TB for a whopping TWO THOUSAND ******* DOLLARS.

Guys, the only reason prices are what they are is because we pay them. If we quit, the price would go down.

I opted to pick up a FAST 78 for the time being. Runners are identical, and if I REALLY need to, I'll punch it out to an 85. But I doubt it.

baxsom

iTrader: (6)

just bought a 78 for 500. In the long run, i decided that the 78 was the best choice. You can use a stock ported throttle body and oem fuel rails so there is no need for adapters or fuel rail modifications. The biggest reasons i have seen against the 102 is fitment might require shorter motor mounts, you need expensive fuel rails, you need expensive throttle bodies to get the full 102 and adapters.

cranny

I'm not impressed with any of the FAST intakes. I have an LS6 and have raced many cars with similar mods, except they were running a FAST. I've beaten way more FAST equipped cars, than I've lost to. For what they cost I think they're a total waste of money unless you have money to **** away. Dyno numbers are cool to look at with a FAST. But I'd rather have an LS6 car that wins races.

SweetS10V8

iTrader: (4)

Ive done it a few times, its typically 3-5hp gain with the 102mm style intake over the 90/92 intake, same throttle body on both.

The 102mm is just a better overall intake IMO, has nothing to do with power over the old version.

smg267

iTrader: (23)

I went with the 90. So many additional costs associated with the 102 to make it function able. Between intake,rails,decent throttle body and all the extra labor to just bolt it on your $1400+ deep.

If you already have an ls6 you can get 300 all day long for it. Check Craigslist but make sure to dismantle all used intakes before bolting them on. Could cost you an engine! I speak from experience unfortunately.

docwyte

iTrader: (4)

I can get a ported FAST 90 for $1000. Seems kind of expensive. Is that what they go for? A new 102 is quite a bit less than that. Granted I'd have to get the fuel rails...

Fitment on my car will be different as I've done an LS swap into my 944, I don't have an F body.

needtransam

iTrader: (2)

if you don't have a a cam or heads I would do that first instead of buying the fast for sure

docwyte

iTrader: (4)

I have a cam already, a 226/230 EPS one. On the dyno logging with HP Tuners showed a vacuum in the upper rpm, pointing to an intake restriction with my current stock MAF, ported stock TB and ls6 manifold.

I've sourced an SLP MAF, FAST 90 TB and am looking into intake manifold options of either FAST 90, Fast 102 or an LS2...

needtransam

iTrader: (2)

stock maf is good for up to i think 500rwhp so your good their, tb you could get a bigger one, and what do you mean "or an LS2"?