Silver_Bullet_Z28

hey guys, i have an LS6 intake on my 2000 Z28 but i was wondering how much hp gains i would get over my LS6 and would it even be worth it? right now i have a 224/228 .581 .588 112lsa cam in the car and will be putting some P&P 241s and 42lbs injectors on later (before i would get the 92 combo).

zacht

iTrader: (18)

you check the dyno section?

1gt2nv

iTrader: (5)

I started the same thread a few weeks ago. Some say you can gain 20whp. I just ordered the fast 92/92. Going to get a tune after the install. I'd be very happy with 20 whp! I also ordered tsp headers/y pipe.

Chaos07

I think it's worth it. I just did the swap. But I did a ported 92 from peak speed n a nw 92

6.0_GTO

Before the FAST 90/ 90 TB, with the mods in my Sig, I made 399.2whp
After the tune with FAST and LS2 TB, I made 425.5whp

YES you will notice it.

Z28SteveA4

iTrader: (16)

a fast is worth the switch up from a ls6 intake as long as the car has a cam and heads behind it. If it was a bolt on car or just a cam only car it wouldnt be really worth the money until you have better flowing heads. I would say you would gain about 15-20 upgrading with your setup now.

ThrelkeldsZ

Well if you deceide to make the swap I'm interested in buying a ls6 intake

Blackpanther99

iTrader: (8)

I personally think its worth the swap.

sway99bird

iTrader: (22)

I'm dealing with the same thing I have a LS6 intake and a stock LS1 TB I believe it's a 78mm and I have a PRC 2.5 5.3 Heads with 383 motor and headers with tru duals. I had a speed density tune done this past weekend and I made 427 RWHP and 425 Torque I was hoping for 450 but my TB & intake is holding me back. So I have been thinking about doing the same thing but it's 20-25 HP for $1,000 dollars or more but i'm planning on going with a good shot of Nitrous (200 or more). So I dont' know if it's worth it my car will see the track but not much mainly street car so I really don't know what to do go with a FAST and do a 200 shot or less or go with a Super Vic and spray 200 plus. I know i'm going to have to upgrade my TB just don't know what to go with intake, but it all depends on your budget and what you are wanting to do with you car......

Silver_Bullet_Z28

thanks for the responses guys! im doing the head swap this summer so im gonna put the 92/92 in the budget lol. im making 392rwhp/375lbs tq right now and cant wait to see the numbers after its done!

Z28SteveA4

iTrader: (16)

You are making a good choice and you should be very happy with your setup and numbers. good luck with everything

MonmouthCtyLS7

iTrader: (6)

Ported Fast for sure, some guys don't even notice the LS6 intake over stock.

RJDio

Might as well check and see how much ported 243's will cost over the ported 241's.

Detoxx03

iTrader: (14)

I did it 5 years ago and it was worth every penny.

*02WS6TURK*

iTrader: (13)

Like mentioned above, it's definitely worth the swap. I picked up almost 20rwh/18rwt with my FAST 92/92 combo. The power is felt all over the RPM range.

studderin

iTrader: (28)

I did my LS6/ BBk 85 and fast92 setup same day back to back. posted the info on here.
gained I think it was 13whp over my ls6 with a ported stock TB

aaronware76

iTrader: (2)

Chaos, any dyno numbers with the peak speed ported setup? I'd love to see that since I'm considering sending them my new fast 92

ws6guy27

iTrader: (31)

Okay so whats the different power numbers from a ls6 to a fast 102? Is. It the same as ported 92? Or so people go with 92 bc cheaper or do u lose power uf u go to big if intake and tb?

Chaos07

No dyno numbers I've been saving money for a new engine so I havnt been on the dyno. But you can definatly hear the intake suck in air.

cdoggy81

iTrader: (6)

If anyone in interested I will be selling my Fast 90/90 combo. I've decided to go with a edelbrock setup on my conversion for an old school look.
I'm also toying with the idea od selling my Texas Speed 5.3 LS heads ported & milled to 59cc 2.02IV/1.575EV (flow 312 cfm @ .600") with double gold Springs w/ Ti retainers. I may go FI & will use my bigger heads if so...

Thanks & LMK if anyone is interested.