INSOMNIAC

I have a 2003 Vette Z06. I am planning to go the whole 9 yards on it and want to hit 800+ RWHP. What is the way to go? Supercharge or Twin turbo? Is it possible with the stock 348 CID, forged internals and F1-R to hit 800+ RWHP? I have the new 03-Later fuel system and current Racetronix pump doesn't work on it. Is there any body out there that has come out with a way to make the new 2003-later fuel system support 800+ RWHP?

Any 03-Later Z06's with 800+ RWHP? Any idea on the cost?

Thanks.

LSs1Power

iTrader: (5)

If u go the SC route its going to be cheaper than the Twin Turbo one. SC could cost 6-7K while the twin turbo will cost 12K. Cost of building the engine will be the same for both routes. I would say the engine build up will cost u 4K. U need good O-ringed heads and cam which is another $3500. U need custom fuel system which is another $1000. U will need a good clutch and stainless forks in the T56 tranny with a stronger shaft which will cost close to $2500. Try using the LS1 Edit to tune ur car. Also make sure u have at least $1-2K extra just in case because u might face things u have to do u never thought about. Good luck.

PurEvl

iTrader: (2)

800 rwhp will take a new computer software, the stock pcm aint gonna cut it

LSs1Power

iTrader: (5)

With a SC i think its doable. There is a guy here who made 780rwhp on a stock PCM. It needs more time on the dyno, thats it.

Redline-Motorsports

iTrader: (3)

Didn't we just all go thru this with the guy who wanted to make 1500 RWHP with his ZO6? What is going on!

INSOMNIAC

Well, I am not that guy and reading that thread I couldn't find the specific things I would need to achieve my goal #. I think 800 RWHP is achievable on a streetable level unlike 1500 RWHP.

I was looking for input from those who have allready gone through this route and share their experiences.

Evil F1 SS

For 800 rwhp a blower will cost more than 7k more like 8-10K. Dont even think about a "kit" . You will need a monster intercooler some serious brackets and one hell of a head unit. YS, F1 at the very least F1-r or YSi to be safe. One thing people always forget when cost comparing Blowers to Turbos is the cost of headers. With a good turbo set up you get manifolds with a blower you have to spend 1K or more on LT headers for the power you want to make.

To make 800 plus rwhp with a stock displacement LS1 is going to be hard. CNC AFR heads a well thought out cam and dump the A/C and power steering should get you close. Have fun and bring a good starting payment of 20 grand and have another 20 waiting to finish it and fix it when it explodes.

InconFormula

iTrader: (7)

A forged short block and a 400 shot.

1point3liter

I have to admit I was thinking the same thing when I first saw this thread. But, I do believe you're asking for more reasonable advice, suggestions, etc.

Sometimes the search feature doesn't turn up a lot without an hour of digging.

There are some twin turbo vette's that are putting down some decent numbers. If you have the money, I would probably go that route.

I'm working on a single turbo setup for my car.

800rwhp appears to be uptainable with stock cubes but hard. Some people are having trouble with lifting the heads at 800+rwhp.

A set of forged pistons, rods, and a stock block should work. The stock aluminum ls1 block may be a bit on edge, but I'm sure others will chime in here. The 6 liter iron truck blocks are popular and not to expensive.

From what I've found you'll want to get your compression down around 8.5:1 so you can get the boost levels up and be more in the effiecency range of the larger turbos.

You'll need a good set of heads. A lot of people have been talking about the TEA 2.5's. You may want to research these. The AFR's are just starting to pop up here and there. I'd seriously look into them. They have a 3/4 deck which should help keep them from lifting. I don't believe anyone has used them on a boosted car yet.

You'll obviously need a good bit of fuel. We're in captain obvious territory here so I'll keep moving. lol

Turbo wise, I'm pretty sure I've seen some twin T-66 numbers up in the range you're looking for. If you go with a single (not sure about your space requrements), I'd explore a t-76, t-88 or something equivelent.

Drive train wise, I'm not sure how the vette's hold up. If you had an RX-7 I could help you there.

Omega-Red

Not wanted, wants to, and I will make the power I want until I am happy. Enough of the mentioning of my car and my plans, ambitious or not, on other threads (I saw that thread about the Beretta GT, whatever troll made it - direct C and P, and I despise that person).

I think we've also been through how to make similar power (800rwhp mark) from the LS6 and in particular the Z06 car before on this site, but you didn't say that though did you?

Pro Stock John

iTrader: (34)

I made 746rwhp thru an unlocked T400 trans with a 348ci engine. 800rwhp is very much achievable without lifting the heads. I have like 20 dyno pulls on my with with all the pulls over 700rwhp. My 746rwhp equates to probably 800rwhp or more if I had a T56/MN12 trans. Personally I like the idea of a blower or a single turbo, only to keep the plumbing and complexity to a minimum BUT I have never owned a turbo car.

I think 800rwhp with a stock pcm might be achievable but in the end it's not necessarily the most efficient way to manage everything, and it might not be cost effective. Remember a BS3 setup might be like $2500. To make 800rwhp you might not be able to use 60lb Mototrons so you might need to upsize to low impedance 83's... Maybe someone like MM has thoughts on this.

02BlueFirehawk

on those cubes 20psi would do the trick but you're gonna be lifting heads... might want to start with a 429ci. I'm partial to turbos myself...

Evil F1 SS

MTI has made 780ish rwhp with a set of 60s/stock comp. with a F1 blower.

Pro Stock John

iTrader: (34)

Yah but he said stock cubes not a $25,000 longblock.

Evil F1 SS

My comment was that the 60s with a stock computer can support that hp #. My car is a small bore motor with a f1 and cogs that I hope will make similar numbers. Everything up until now has been encouraging!

Pro Stock John

iTrader: (34)

Oh gotcha good point.

INSOMNIAC

Yeah, MTI's Z06 made 780 RWHP on a 427 CID though not stock 348 CID. I have bunch of bolt-ons on my Z06 already (LG Long Tube Headers with Off-Road x-pipe, B&B Bullets, 80mm TB, etc. $$ savings and heat issues bring me closer to supercharging. Definetely an F1-R.

Can I get a GM 6.0L iron block bored and stroked to make 427 CID? Can I use FAST 90 mm intake manifold and TB with that? Any 427 CID iron block vettes around? What are the typical problems with the iron block other than the 80 lbs plus weight.

Thanks for all the useful info.

1point3liter

But at what duty cycle?

Those injectors sound small for 800rwhp. I'm planning to run 70's or so and aren't looking to make 800rwhp.

V8_DSM_V8again

I think it is very doable on the stock stroke.

I made 600 on 2.0 liters with forced induction so just run 2/3 as much boost...

I'd run an iron truck block and a stock stroke crank then run an F1 supercharger and an air to water IC...

Honestly you can DIY TT for alot less than people think but you need to know what you are doing so stick with a belt driven centifugal compressor.

Pro Stock John

iTrader: (34)

I also wonder the duty cycle of some of the cars with the mototron 60's.