c5_ls1_6spd

iTrader: (-1)

im made 440rwhp w/ CAI, LTs, LS6 ported heads and MS3 cam. I'm putting my FAST 90/90 on this weekend. Is 460-470 rwhp looking real attainable with the FAST 90/90?

sonicbaloo

iTrader: (2)

You shouold be close if you do a little work to the intake.

Chad

BigRon77

iTrader: (1)

Several LS2 Vettes I have seen (about 5) have gained between 14 and 22rwhp with the addition of the FAST (depending on cammed, not cammed, headers, etc.), and some nice increases in TQ too (about the same as hp or a little more), so if you're moving from 78 to 90 and the FAST, you could get there.

Good luck! Good numbers with ported LS6 heads!

PA Z06

I would think 20hp would be about right.

zo6vetteman2003

iTrader: (1)

I think you will be right around there. I made over SAE 440rwhp @ 5000rpm on slipping clutch with this setup. I need a new dyno to see to where I actually am with this new clutch. Remember to port match the bottom half of the FAST to your intake ports on the heads. hehe.

Chris Rowe

c5_ls1_6spd, I have a similar on my car. Just used the TSP 233/239 cam and made the same power.
I have been thinking of adding a FAST to my car, so please post your results!!!

c5_ls1_6spd

iTrader: (-1)

actually im moving from the stock '02 C5 throttle body unported to the fast 90/ls2 90 ported tb and i'm still using my stock underdrive pulley

zo6vetteman2003

iTrader: (1)

I got a good deal for the FAST 90 LSX intake on ebay and saved about $100.00 brand new. In addition, buy the LS2/LS7 throttlebody from Texas-Speed.com. GM wanted $464.00 for the throttlebody, I paid only $264.00 and an additional $59.00 for the wiring harness which you will need to make it work. I ported the bottom half of the LSX to match my intake ports on the heads which have a lowered floor.

allngn_c5

iTrader: (3)

Do you have the LS1 intake, or LS6. If you have the LS1 you should pick up around 22 rwhp. If you have the LS6 intake, you should see 17 rwhp. I would expect these numbers maybe a couple more. Tony Mamo says going from stock LS1 intake and 78 unported TB to his custom ported 90/90 you could see up 27 rwhp. Good luck!!!