GOING FI- need advice
Thread Starter
Race Director
Joined: Sep 2005
Posts: 11,060
Likes: 291
From: Pasco WA
GOING FI- need advice
I've got a full bolt-on H/C Z, that's @ 480 RWHP, and I just bought an A&A Vortech kit. (V3 SI trim) I'm having to de-mod some parts, like my Meziere EWP, and Powerbond UD pulley, but the thing I'm most concerned about, is the FAST 90 setup. The guys at A&A said to just trade someone ( I sold my original) for a LS6 intake/TB, because the FAST needs to be modified, and the durability under boost is questionable. I've got alot of $$ in my FAST, being ported, sensor relocation, etc., and though it'd be a simpler install, and maybe tune, to go back stock, would I be leaving alot of HP on the table?
Racer
Joined: Jan 2006
Posts: 256
Likes: 0
From: San Diego/Eastlake Ca
Are you running stock compression in this set up as well? Are you going to use good gas or meth? I ask because if you're making 480 rwhp with stock displacement, then I imagine you're also running a bit of compression.
If that's the case, and you're only going to be running very low boost (7psi?), I wouldn't worry about it. How much boost/power do you hope to make?
If that's the case, and you're only going to be running very low boost (7psi?), I wouldn't worry about it. How much boost/power do you hope to make?
Team Owner
Joined: Jan 2007
Posts: 29,063
Likes: 1,839
From: cookeville tennessee
Are you running stock compression in this set up as well? Are you going to use good gas or meth? I ask because if you're making 480 rwhp with stock displacement, then I imagine you're also running a bit of compression.
If that's the case, and you're only going to be running very low boost (7psi?), I wouldn't worry about it. How much boost/power do you hope to make?
If that's the case, and you're only going to be running very low boost (7psi?), I wouldn't worry about it. How much boost/power do you hope to make?
The fast seems to have no problem until 14 plus psi.
Pro
Joined: Feb 2005
Posts: 652
Likes: 16
From: Upton MA
I am running a ported FAST 90 intake at 15lbs. I have heard of these having problems with boost, I don't know how many of the reports might be of the same unit. I also have 2 pop off valves set to 18 psi at my throttle body, this is in addition to my blow off valve. This should help reduce any high pressure spikes during shifting.
Melting Slicks
Joined: Aug 2008
Posts: 3,451
Likes: 27
From: Bay Area CA
I have H/C and a FAST92 (stock block)...I kept the FAST. Being that I'm still on stock pistons, I kept the boost low (7psi) and the tune conservative (10 degree timing).....580rwhp/520rwtq.....and its a blast.
When the time comes for a forged motor and more boost, the FAST intake will probably be traded for an LS6
When the time comes for a forged motor and more boost, the FAST intake will probably be traded for an LS6
Thread Starter
Race Director
Joined: Sep 2005
Posts: 11,060
Likes: 291
From: Pasco WA
I have H/C and a FAST92 (stock block)...I kept the FAST. Being that I'm still on stock pistons, I kept the boost low (7psi) and the tune conservative (10 degree timing).....580rwhp/520rwtq.....and its a blast.
When the time comes for a forged motor and more boost, the FAST intake will probably be traded for an LS6
When the time comes for a forged motor and more boost, the FAST intake will probably be traded for an LS6
This is about the same as my position. I'm at 10.9:1 CR with 61cc heads, and at this point in time, don't foresee going with more than 8 lbs of boost. If and when the day comes to forge, I'll drop the CR with dished pistons, because I want to keep my Trickflows. AFAIK, the only modification needed to retain the FAST will be to flip the TB, and relocate the PS res.
Team Owner
Joined: May 2006
Posts: 21,473
Likes: 356
From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
Believe me you will be fine under BOOST with the LS6 manifold and you will not be leaving a ton of HP on the table
Under BOOST the LS6 performs very well and will stay in one piece, if you feel you need more RWHP then pulley down and it'll BOOST up and you'll tune for the extra HP.
Why are you ditching the EWP? I have one on mine and it is great, although I do not track the Vette.. 701 RWHP and 582 RWTQ
Thanks,Matt
Under BOOST the LS6 performs very well and will stay in one piece, if you feel you need more RWHP then pulley down and it'll BOOST up and you'll tune for the extra HP.
Why are you ditching the EWP? I have one on mine and it is great, although I do not track the Vette.. 701 RWHP and 582 RWTQ
Thanks,Matt
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Thread Starter
Race Director
Joined: Sep 2005
Posts: 11,060
Likes: 291
From: Pasco WA
Believe me you will be fine under BOOST with the LS6 manifold and you will not be leaving a ton of HP on the table
Under BOOST the LS6 performs very well and will stay in one piece, if you feel you need more RWHP then pulley down and it'll BOOST up and you'll tune for the extra HP.
Why are you ditching the EWP? I have one on mine and it is great, although I do not track the Vette.. 701 RWHP and 582 RWTQ
Thanks,Matt
Under BOOST the LS6 performs very well and will stay in one piece, if you feel you need more RWHP then pulley down and it'll BOOST up and you'll tune for the extra HP.
Why are you ditching the EWP? I have one on mine and it is great, although I do not track the Vette.. 701 RWHP and 582 RWTQ
Thanks,Matt
Melting Slicks
Joined: Aug 2008
Posts: 3,451
Likes: 27
From: Bay Area CA
We run very similar setups. I have Trickflow heads and a 228/232 cam (115LSA). You'll be fine.....just don't go crazy on the tune. My tuner said these piston are at there limit at around 600rwhp....so he made sure to keep it below that
Melting Slicks
Joined: May 2003
Posts: 2,851
Likes: 1
From: San Bruno Ca
My advice is to have lots more money to spend than you originally anticipate. Have even more patience when having any work done at a shop. F/I has a bunch of issues, going to the LS-6 manifold works very well and no leak issues. You will not be leaving too many HPs on the table.
Last edited by Scubanme; Oct 10, 2009 at 12:52 AM.
Team Owner
Joined: May 2006
Posts: 21,473
Likes: 356
From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
I think you misunderstood a little, Matt. I have the FAST, and was told by A&A to switch back to stock (Which I no longer have) LS6 mani. I'm pretty sure I could trade intakes easily through the forum, but since I already have the FAST dialed in, should I bother? On the EWP question, the guy @ A&A said it wouldn't fit with the SC bracket setup. I can easily switch back to stock, and sell the EWP, but A&A said it wouldn't fit??? I'm gonna be down there pinning the crank pulley (and changing it back to stock one) so do I REALLY need to change cams? I run a Crane 228-232 @ 112+5 and .600/.600 lift, BTW. Once again, I'd like to retain the cam if possible because it performs well NA, and has a nice lope, too.
You should be fine. I am suprised at the EWP I run one on mine with the A&A Bracket and have no issues!
I realized you have the FAST now but I was simply saying the LS6 will do good if you choose to switch - I would IMHO!
Thanks,Matt
Race Director
Joined: Mar 2001
Posts: 10,030
Likes: 10
From: Prescott AZ
St. Jude Donor '04
Believe me you will be fine under BOOST with the LS6 manifold and you will not be leaving a ton of HP on the table
Under BOOST the LS6 performs very well and will stay in one piece, if you feel you need more RWHP then pulley down and it'll BOOST up and you'll tune for the extra HP.
Why are you ditching the EWP? I have one on mine and it is great, although I do not track the Vette.. 701 RWHP and 582 RWTQ
Thanks,Matt
Under BOOST the LS6 performs very well and will stay in one piece, if you feel you need more RWHP then pulley down and it'll BOOST up and you'll tune for the extra HP.
Why are you ditching the EWP? I have one on mine and it is great, although I do not track the Vette.. 701 RWHP and 582 RWTQ
Thanks,Matt
I still run a LS1 Intake Manifold just haven't been motivated to change it or spend the money
Drifting
Joined: Feb 2005
Posts: 1,869
Likes: 61
From: montreal quebec