T2x

Looking at buying a Fast 92mm intake and Nick Williams throttle body and a few people have told me that it wont be worth it on my combo. Currently running: 98 Camaro SBE LS1, CNC ported and milled 243 heads, BTR Stage II LS1 cam, 1-7/8 long tubes and LS6 intake with stock throttle body. Happy with the set up, drove it for a year and works great, but can't help but think based on the research I've done a larger intake and throttle body wouldn't pick up a decent amount of power. Considering the 92mm because my stock fuel rail will work without adding the cost of rails, no mods needed to install and I doubt the 102 would pick up much more than a 92 on my set up. Any ideas on what it would gain? To justify it in my mind I'd like to pick up 20 and some throttle response. If it was only going to gain 10 or something I probably wont do it.I know nobody is going to know exactly what it will gain, just looking for some advice.

99 Black Bird T/A

iTrader: (4)

Go for it!

Easy to pick up ~10 to 15 cfm of airflow with a Fast 90/92 vs a stock snout LS6 intake. Depending on other factors that could be ~10hp to ~30hp gain.

TPIS/LPE 90mm snout on on an LS6 will make it about equal to a Fast 90/92. However, the Fast 90/92 can be ported for even more hp. Succesful porting difficult with an LS6. The Fast runners will end up flowing even more airflow with porting.

Selling the LS6 will pay cover ~$400 of the Fast purchase.

You can get an NW equal quality 92mm TB for ~$150 from WARR Performance but have to reuse your current TB's sensors or buy new ones for $85 or so. Easy way to save $150+

Have a WARR Performance 92mm TB on one car and a NW 92mm TB on another car. Both are equally outstanding.

madmike9396

iTrader: (29)

Im running a fast 92 with a Warr 92 throttle body with 0 complaints. when i go fast 102 i will buy a Warr 102

T2x

Thanks for the recommendation on the WARR throttle body. The only reason I kind of landed on the Nick Williams is I don’t want to have tuning/idle issues that I’ve read some other throttle bodies may have, especially considering I’m on the ‘98 pcm.

99 Black Bird T/A

iTrader: (4)

My tuner was just as happy with the WARR as the NW. Have the WARR 92mm on an 02 Z28, & Nick Williams 92mm on LS swapped 91 RS w/02 Z28 PCM/ECM. So I can't directly say anything about a 98 PCM/ECM.

98cherrySS

iTrader: (2)

I have a 98 PCM with a ported 92 and a Warr throttle. I still struggle with the occasional stall when coming to a stop. It's rare but it happens.

Tyler Dietzenbach

iTrader: (5)

I would go ahead and do it. I personally prefer the TPIS 90mm snout mod because it looks factory and tuning/drivability should be easier and better vs FAST. You'll *probably* gain about 15-20hp but that's just a guess.

You'll only need a new TB after that as everything else will remain stock. I personally bought an Edelbrock that will be going in over the next couple months. I got it used for really cheap on this forum. Seems like a quality unit.

99 Black Bird T/A

iTrader: (4)

FWIW - LPE/TPIS 90mm snout LS6 will basically flow the same air as an unported Fast 90. Saying that based on my flow bench testing with both intakes. The 90mm snout TPIS LS6 also drove a little better and made ~2whp more on my small cam LS1 383 stroker.

Like Tyler, I prefer the more OEM look of the mod'd 90mm LS6.

The $400 in porting the TPIS 90mm snout LS6 wasn't beneficial in my experience. That's where the Fast 90/92 has an advantage.

Full disclosure, my 02 Z28 & 91 RS both have LPE/TPIS 90mm snout LS6 intakes. The bolt on 02 Z28 Drives Like OEM stock the 383 LS1 drives like nearly stock.

T2x

Certainly an option to think about. The only apprehension I have is I’m in Canada so I’d have to pay a fairly high amount to ship an intake manifold to TPIS and back so it’s going to make the cost difference between the two a lot smaller, as if I go with the FAST manifold I’d be able to sell my LS6 to recoup some of the cost.

Tyler Dietzenbach

iTrader: (5)

Hopefully if you choose to do so, shipping wont be THAT bad. TPIS is located in Minnesota

quiet_storm98

iTrader: (48)

I was in the same boat as you and I ended up buying a fast 92 only because someone local to me was selling one for $620. I still haven't installed it yet but after buying a NW TB and a 96mm lid i now have over 1k invested into this and i still question if its really worth it but once you have just about everything else done there really isn't anything else you can do if you're NA

T2x

What are you guys using for a bellows on the 92mm TB? Right now I have the SLP bellows on the SLP lid and I’ve read it will still work?

99 Black Bird T/A

iTrader: (4)

I stepped up to Fast Toys 96mm Lid, 85mm MAF and bigger bellows from WS6 Store.

z-maro

iTrader: (18)

The stock accordion bellow can also be used with a NW 92 TB and 85mm MAF.

quiet_storm98

iTrader: (48)

yeah thats what i've heard and what i plan on using since i still have it

BandDirector Blk98ZM6

iTrader: (21)

Stock internal LS6 longblock with all the usual bolt-ons and SLP LS6 intake ('98 needed EGR provision) and a Vengeance Racing ported stock TB got me to 385 RHP. I went with FAST92 & NW 92 TB because I wanted to get to 400 RWHP and after the FAST/NW swap, I hit 400.1 RWHP. With a bigger cam, etc., I'd expect it to be more, but I picked up 15 RWHP with a stock LS6 in my '98 Z28...

wannafbody

iTrader: (2)

I'd suggest for the money to just step up to the 102 unless you find the 92 used.

01CamaroSSTx

iTrader: (3)

Going into a 4th Gen car for street/strip use? The FAST92 or 102 is the best one on the market followed by the LS2 and LS6.

G Atsma

But not in that order according to dyno tests, UNLESS the LS2 is the Dorman unit. The OEM LS2 manifold isn't as good as the LS6 by a fair measure.
It would be- FAST 92/102, Dorman LS2, LS6, OEM LS2. Just FYI....

gagliano7

The Warr throttle body was very easy to tune. I very nice unit at a fair price.