[Z06] Sc vs na
Thread Starter
Advanced
Joined: Aug 2009
Posts: 58
Likes: 0
Sc vs na
SC vs NA,It seems from what I read on the forum that a NA 550rwhp run about the same 1/4 mile times as a SC 650 rwhp.I'm looking to Mod the Z and trying to decide which way to go.I know elevation,heat are factors.What else is there to factor?
Race Director
Joined: Sep 2005
Posts: 11,060
Likes: 291
From: Pasco WA
Ask in the FI section. I'd think the type of FI would make a difference, as well as the way it's set up. If you're talking about 1/4 mile performance, or road course,etc. would all be factors. Roots type SC versus centri, or turbocharging all make a difference on how the power gets to the ground. If your criteria is strictly racing, then you need answers from racers, which I'm not. Good luck. 
Le Mans Master
Joined: Feb 2001
Posts: 6,776
Likes: 358
From: West "By God" Virginia
CI 7-8-9-10 Veteran
FYI, you will not get ANYwhere near 550whp NA out of an ls6, some have been lucky to get 500, but driveability severely suffers. To get ~550whp na, you would have to go with a stroked ls3 or ls7, and then you are in 15k range for power not to mention drivetrain, clutch, etc to support that power. Many vendors on here are doing superchargers installed for ~6500 and seeing 600whp all day. Of course tho, you still have the drivetrain and clutch issues.
Burning Brakes
Joined: Mar 2006
Posts: 1,095
Likes: 5
From: Oldham County Louisville, KY
FYI, you will not get ANYwhere near 550whp NA out of an ls6, some have been lucky to get 500, but driveability severely suffers. To get ~550whp na, you would have to go with a stroked ls3 or ls7, and then you are in 15k range for power not to mention drivetrain, clutch, etc to support that power. Many vendors on here are doing superchargers installed for ~6500 and seeing 600whp all day. Of course tho, you still have the drivetrain and clutch issues.
Ported Heads, Ported Fast Intake, and electric water pump and think it can be done. I have no drive-ability issues what so ever. 2002 Z06.
Race Director
Joined: Dec 2006
Posts: 12,317
Likes: 2,868
From: Fort Worth, Texas
the reason is because you're comparing peak numbers and not avg power, which is what wins...IATs will also climb faster with FI and unless countered you're not making the same power after a couple gears as you did on the dyno in one gear
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
Race Director
Joined: Jun 2003
Posts: 14,051
Likes: 9
From: Houston TX
I would have to disagree with you. I'm at 470RWHP on a Mustang Dyno and a DynoJet with a CAM, Unported FAST 92, and LS2 Intake. No head work at all.
Ported Heads, Ported Fast Intake, and electric water pump and think it can be done. I have no drive-ability issues what so ever. 2002 Z06.
Ported Heads, Ported Fast Intake, and electric water pump and think it can be done. I have no drive-ability issues what so ever. 2002 Z06.
No way that a stock heads cam LS2 Intake Fast 92 LS6 is putting 470rwhp down - perhaps the car has a very aggresive ehad porting job you are not aware of.
I don't believe the stock LS6 head will not flow enough to deliver that power.
There is a reason us early C5Z adopters that where seeking decent NA hp/torque went with 402, 422, 427 and 440ci. You need the displacement, the heads and the exhausts and 100mm throttle bodies to flow enough to exploit the cam needed to pull that kind of power.
All the 450+rwhp Ls6's have extreme cams and headwork done to support those numbers, unless LS6's behave differently in 2010 to the way they did in 2001, 2002 and 2003.
Last edited by RC45; Sep 15, 2010 at 04:50 AM.
Team Owner
Joined: Nov 2001
Posts: 34,124
Likes: 105
From: Pensacola FL
For simple 1/4 mile work, I would go F/I all the way. Cheaper, less driveline shock and most likely using race gas at the track anyway. If you are road-racing, N/A may be better suited to your needs and you can always spray a little on top for special occassions.
Team Owner
Joined: Nov 2001
Posts: 34,124
Likes: 105
From: Pensacola FL
FYI, you will not get ANYwhere near 550whp NA out of an ls6, some have been lucky to get 500, but driveability severely suffers. To get ~550whp na, you would have to go with a stroked ls3 or ls7, and then you are in 15k range for power not to mention drivetrain, clutch, etc to support that power. Many vendors on here are doing superchargers installed for ~6500 and seeing 600whp all day. Of course tho, you still have the drivetrain and clutch issues.
You will eventually build a forged engine for the boost anyways, so that makes it more of an application decision...
Race Director
Joined: Jun 2003
Posts: 14,051
Likes: 9
From: Houston TX
We did the math years ago and it is a wash. A decent F/I setup costs the same as a decent big cube N/A setup.
Youstill need heaps of cooling, transmission beefing up, bigger wheels tyres to hook, clutch beefing up, forged bottom end, heads etc etc.
You can get the setup built for about $16 to $20K or build it yourself for $10 to $14K saving on the labour.
A decent fast car costs money - a fast "slap stick" car is cheap but won't hold up for long.
Youstill need heaps of cooling, transmission beefing up, bigger wheels tyres to hook, clutch beefing up, forged bottom end, heads etc etc.
You can get the setup built for about $16 to $20K or build it yourself for $10 to $14K saving on the labour.
A decent fast car costs money - a fast "slap stick" car is cheap but won't hold up for long.
Melting Slicks
Joined: Jul 2007
Posts: 2,087
Likes: 11
From: Austin TX
I would have to disagree with you. I'm at 470RWHP on a Mustang Dyno and a DynoJet with a CAM, Unported FAST 92, and LS2 Intake. No head work at all.
Ported Heads, Ported Fast Intake, and electric water pump and think it can be done. I have no drive-ability issues what so ever. 2002 Z06.
Ported Heads, Ported Fast Intake, and electric water pump and think it can be done. I have no drive-ability issues what so ever. 2002 Z06.
Drifting
Joined: Apr 2003
Posts: 1,387
Likes: 10
From: Jacksonville FL
We did the math years ago and it is a wash. A decent F/I setup costs the same as a decent big cube N/A setup.
Youstill need heaps of cooling, transmission beefing up, bigger wheels tyres to hook, clutch beefing up, forged bottom end, heads etc etc.
You can get the setup built for about $16 to $20K or build it yourself for $10 to $14K saving on the labour.
A decent fast car costs money - a fast "slap stick" car is cheap but won't hold up for long.
Youstill need heaps of cooling, transmission beefing up, bigger wheels tyres to hook, clutch beefing up, forged bottom end, heads etc etc.
You can get the setup built for about $16 to $20K or build it yourself for $10 to $14K saving on the labour.
A decent fast car costs money - a fast "slap stick" car is cheap but won't hold up for long.
Fast, Cheap, Reliable. Pick two.RC, I haven't seen you post in quite a while. Good to see you here again.
Race Director
Joined: Jun 2003
Posts: 14,051
Likes: 9
From: Houston TX
