flyboyzack

Hey guys, I'm a newb to American Muscle cars and sports cars. I have always been a big boost import car junkie. I have owned various cars such as a 414 rwhp BPU++ 6sp Supra, a 421 awhp Subaru STi, and a 513 rwhp 300zx twin turbo to name a few. Needless to say I love turbos....the rush of a big turbo(s) kicking in is nuts on big hp cars.

I am kinda looking to explore some domestic performance cars, namely the Corvette. I have always loved Vettes, and am considering getting one in the coming months. Since boost is in my DNA, how well do these cars respond to boost....big boost. Do you have to build the motor to run more than a bar (14.7PSI) or so of boost? I have my eyes set on building a twin-turbo vette, and was wondering what kind of numbers can I expect to get on pump gas without tearing up the motor and re-working it? I know APS has a pretty sweet kit that's goot for about 500 rwhp I think.

Thanks for any insight

lucky131969

There is plenty of information on this forum to answer your question. So you don't own a vette, but you are "thinking" of buying one, and decided to join this forum just to pick our brains, huh?


Import turbo junkie............

madmatt9471

Look here:
http://forums.corvetteforum.com/show....php?t=1587048

There are tons of FI Vettes to show you what they will do! Check out the list!

One member BARABUS has a 780 RWHP and 830 RWTQ C6 that has APS TT's on it!

I'm running a ProCharger on my LS1 346 Motor and have 565 RWHP and 483 RWTQ with no meth yet! (Coming Soon! ) and on ONLY 6.8 PSI of B@@ST!
Thanks,Matt

LS6.net

On a stock LS6, you can expect 6-8psi to get you around 525-575rwhp. With a Vortech blower @ 6.5psi, my 2003 C5 Z06 made 544rwhp with just headers and a tune as my other mods. Still a stock fuel system, too. That was a gain of 156rwhp over my numbers with just a cold air and long tube headers.

If you want to run more than 7-8psi, you'll want to run meth. With a good tune and meth injection, you can run 10psi pretty safely. More than that and you'll want a forged motor. The sky is the limit regarding boost once you've built the motor. The amount of power you make it directly related to the size of your wallet.

You should be able to make 700-750rwhp with a TT setup on a forged stock crank rebuild. A good top end, along with a stout bottom end, should allow boost levels of 14-16psi on pump gas w/meth. Here's a dyno of an APS TT 347ci setup that Cartek built for a member on the board:





750hp/791tq at the wheels.

MIKE-C5

If you are planning on buying a Vette, this forum will defently convince you soon!

pimpjames

The good thing about a boosted vette is not only the HP/Torque its the small things while having all that power like the handling, style, not to mention the Vette Heritage or membership and friends you will make from the whole vette community.

Shinobi'sZ

If you like boost you can get results like this with at least one of the TT kits available..you can search or ask to find out. I don't think the one I have is available anymore. But with the right setup...LSx love boost...don't be afraid to try one of the Centrifugal Supercharger kits offerred by ECS or A&A either...they are laying down some serious power and back'n it up with track times.

Here is a quick pic of one of my dyno graphs...this one is a little less then the run that was made at A&As party last June on the Dynojet. (347cid).

All numbers are at the rear wheels....ignore the fields in the boxes such as rpm etc...they were simply not filled out.

_Will_

Welcome aboard.

You cannot run 14-15psi safely on a stock ls1. It would need forged rods/pistons.

You can however run enough boost stock to make more power than the cars you listed, not to mention far superior area under the curve. You will be more than pleased.

Good luck with your purchase/plans. This forum is very helpful when it comes to the FI section.

Gannet

These aren't little engines, and they don't need to make huge boost to make huge power. Don't worry about how many bars you can pull.

A fully streetable LS engine can probably go as high as 1200 or so rwhp without too much trouble. Building it, that is. Keeping a driveline under a C5 at those power levels is another story. There are some SERIOUSLY fast streetable Vettes on this forum and I don't believe anyone is running at those power levels. Maybe Major Spray/Bowerey Boys?

The typical stupid-hp setup pulls 850-950 on the dyno and is detuned to 750 or so for the street.

My suggestion is to set a performance goal first and then ask what it takes to get there. It will probably be much less radical than you expect, compared to import setups.

A "reasonable" built-for-speed street C5 can run low 9s and top out at over 230. At least. Fast enough for ya?

I don't own one these killer setups (yet), this is just what I've gathered from asking others pror to my own buildup, so this is decidedly a non-expert opinion.

RED99

You can look on Linfenfelters web site and they have some videos on some Hight powered vettes. One is a C6 on a Dyno making over 1000 RWHP. Another one of a C6 doing over 200 mph in the standing mile.

madmatt9471

Now that's what I'm talkin about!

Thanks,Matt

flyboyzack

Wow, this is freaking nuts!!!! Getting 600rwhp in a Supra on pump gas is a huge accomplishment. On a TT vette, however it seems like 800 rwhp is attainable on pump gas with the average for a good setup being 500-700 rwhp. I remember as awesome of a car the Supra is, no one on the Supraforums would argue when a TT Viper came into town. They said unless you were running a 74mm+ turbo w/ 30-35 PSI on C16 you wouldn't stand a chance. What I like about the Vette is being able to acheive great numbers ON PUMP GAS, also with the boost coming on quicker for an overall better power curve.

I would say my goal would be something in the 550-650 rwhp range that is going to be fairly reliable and streetable, with the ability to break into the 10's. I'm looking into a C5 because I could buy one and build it for the same price and maybe even less than the C6's. I am already sold. I just need to find a clean 00-02 Millineum Yellow 6spd now!!!!!

Gannet

Any of the "favored" FI kits will meet those goals with ease on a forged but otherwise mostly stock engine, excepting the Magnuson (Maggie). It can also drive like stock, on pump gas (although meth injection is suggested). If it were me, I'd consider the following kits, in no particular order:

A&A Vortech (centri)
EPP Procharger (centri)
ECS Paxton (centri)
Kenne Bell (twin screw)
TTix (twin turbo)
STS (twin turbo)

Any of these will run $8500-10000, installed, with the usual bells and whistles. Engine forging and driveline upgrades not included.

RED99

If you look in the cars for sale section, sometimes you can find some great deals on cars already modded and could save your $10-$30k.

0Quik Z06

I agree, I bought my 99 FRC with all the mods done for $31.5 and couldnt be happier. 5-550hp you would be able to get on pump gas, but anything above that your pushing it. If you plan on building the motor the sky is the limit.

PS...I used to be into imports as well, owned a bunch over the years MR2-T, Evo, Eclipse, S2K to name a few However I dont regret switching

DefenderC5

Look for the 01-02, there were some changes between 2000 and 2001 that would be important to you and your horsepower goals. Namely, less stuff to switch out. It already has LS6 intake manifold/block and a better cam grind among other things. For your boost goals, unless you are building/forging the engine anyway, the LS1 may be better for you rather than an LS6 Z06 in my opinion. The LS1 has a little lower compression. It's not essential, but if I was looking again from scratch it is something I would consider. Plus you can get a removable roof coupe!

SpdKilz

I love the turbos on this car. 4.5psi and 548rwhp on a mustang dyno. I'm going to turn it up a psi or two for spring and hope for 600ish on 93 octane. Car pulls like a mad man! You won't regret turboing it!

Scubanme

Stock shortblock Vettes can handle too much boost. Meaning you have to stay below 10 PSI on the stock shortblock. The good part is 10 PSI should net you around 600rwhp on a stock Z06. Realistically most people play it safe and stay around 8 or less PSI or about 550 rwhp for an everyday driver. Now once you forge the shortblock, then you can safely run 14 to 16 PSI with Meth. That's around the 700+ rwhp range.

Scubanme

Any of these kits can get you into the 10's

TLewis4095

We have a 1,000 RWHP Z06 on pump gas in the shop now if you want to see one in person. Latest Vette magazine has several featured.