[seven_227]

Originally Posted by OBI_agent

Yo bro....Eid Mubarak! Damnnnnn.......your car is fasttttt!!!! So, you got your car fixed haa.......new rims or the same old? Anyway, congrats on kicking ass bro....when you gonna show me your car??? Tomorrow is Juma so.. show me bro...and was it a LS2 or a LS3??? You sure that's it's a LS2??? Damn , after upgrading to a V2, your gonna kill a corvette with ease...yo jus for your info, the limp mode probs in the v2.0.2 are going to go away with the a new map for it...dont forget it to upload it when you get ithttp://www.e90post.com/forums/showthread.php?t=102683
Camon, show me your car bro!!!

Yup got it fixed, but didnt change rims yet, got some slight vibrations at high speeds. Well the owner said that he got the car 4 months ago, but I did not really ask if it was a LS2 or LS3, when was the 2008 vette launched? But I dont think that it's the LS3 since that thing has more power.

[Driver72]

Originally Posted by turbocoins

Big variation in cars. I just had my '08 Z06 dynoed and tuned today.

Stock RWHP=426, stock RWTQ=399.
Tune only, no bolt ons, RWHP=455, RWTQ=420.

Calculate 12% drivetrain loss: Stock Crank HP=484, Stock TQ=453
Tuned Crank HP=517, TQ=477

Major difference in my opinion.

http://www.z06vette.com/forums/f70/2...o-sheet-108471

I would have to say that the drivetrain loss on MOST manual transmission cars it's closer to 15% than 12% as you calculated above.
In fact, some sites will tell you that they use 16% for manuals, and 18% for autos.

You take the stock ZO6's 505 hp x 15% = 429 rwhp (right about what you got)
You figure the same 15% with your tune and you have about 536 crank hp.

Your car is therefore making the stated 505 hp stock from the factory.

[turbocoins]

Originally Posted by Driver72

I would have to say that the drivetrain loss on MOST manual transmission cars it's closer to 15% than 12% as you calculated above.
In fact, some sites will tell you that they use 16% for manuals, and 18% for autos.

You take the stock ZO6's 505 hp x 15% = 429 rwhp (right about what you got)
You figure the same 15% with your tune and you have about 536 crank hp.

Your car is therefore making the stated 505 hp stock from the factory.

I wouldn't disagree. The only way to tell is to test the motor directly. I do know that my car is on the lower end of the spectrum power wise stock.

[OBI_agent]

Originally Posted by seven_227

Yup got it fixed, but didnt change rims yet, got some slight vibrations at high speeds. Well the owner said that he got the car 4 months ago, but I did not really ask if it was a LS2 or LS3, when was the 2008 vette launched? But I dont think that it's the LS3 since that thing has more power.

Sept 2007....anyway, last i heard, there are around 10 LS3 corvette's over here. Anyway , I don't think the LS3 could hang with you after, you get the V2...that's my honest opinion

[Carnage]

Originally Posted by OBI_agent

Sept 2007....anyway, last i heard, there are around 10 LS3 corvette's over here. Anyway , I don't think the LS3 could hang with you after, you get the V2...that's my honest opinion

go race one, the LS3's are putting down about 395HP/390TQ at the wheels stock. The V2's are putting down more TQ but about 40 less HP. Stock LS3 vs. a V2 will be a good race but if they've done any mods, it's over.

[turbocoins]

Originally Posted by Carnage

go race one, the LS3's are putting down about 395HP/390TQ at the wheels stock. The V2's are putting down more TQ but about 40 less HP. Stock LS3 vs. a V2 will be a good race but if they've done any mods, it's over.

Doubtful that many LS3s will be stock. Even air intake changes net 10-12 HP on that car. It's a screamer.

[Driver72]

Originally Posted by turbocoins

I wouldn't disagree. The only way to tell is to test the motor directly. I do know that my car is on the lower end of the spectrum power wise stock.

Again, it's pretty much the belief that it's
14-16% with manuals RWD cars
17-18% with autos RWD cars

About 1-2% less for FWD cars and about 3-4% more for AWD cars.

There used to be a website that listed hundreds of cars and there dyno results (wish I could remember it) and they used 16% for all their results of manual cars.

[e90AW335i]

Originally Posted by stan@dinan

The percentage of drivetrain loss has been a talking point among tuners and the numbers have been fluctuating from 10% to over 17%. What most tuners do not know is that drivetrain loss is not a constant factor; it is determined by the frictional losses throughout the engine and drivetrain which differs throughout the entire rev range. As the car goes faster (MPH goes up on the speedo) the gears, bearings and seals are moving at a higher speed and friction increases

Just thought I would add that to the drivetrain loss discussion....

[Driver72]

Originally Posted by kyleh4852

Just thought I would add that to the drivetrain loss discussion....

That post from Steve Dinan is exactly right.
Of course there is more friction at higher speeds, and therefore more drivetrain loss.
But the 15-16% that most people/dyno tuners, etc go by for a manual rwd car is an "average".
At the start of the dyno run, it might only be 8-9%, by the top of 4th it's probably 20-21%.

[MacDutchski]

Have you guys seen the new ZR1? Scary fast!

If you want pure power, American auto manufacturers do it best.

0-60 in 3 seconds! 1 G of lateral grip.

"It all boils down to the power-to-weight ratio and the ZR1’s is exceptional," said Chevy's Ed Peper. "Better than the Porsche 911 GT2, the Ferrari 599 and even the Lamborghini LP640. In fact, the ZR1 is expected to be the first production Corvette to achieve a top speed of at least 200 mph."

http://www.autoblog.com/photos/2009-...te-zr1/537455/

[Driver72]

Originally Posted by MacDutchski

Have you guys seen the new ZR1? Scary fast!

If you want pure power, American auto manufacturers do it best.

0-60 in 3 seconds! 1 G of lateral grip.

"It all boils down to the power-to-weight ratio and the ZR1’s is exceptional," said Chevy's Ed Peper. "Better than the Porsche 911 GT2, the Ferrari 599 and even the Lamborghini LP640. In fact, the ZR1 is expected to be the first production Corvette to achieve a top speed of at least 200 mph."

http://www.autoblog.com/photos/2009-...te-zr1/537455/

Yeah but $100K for a Corvette.

You could buy the $50k LS3 car and supercharge it for about $6-8K, put in brakes, suspension, intake, exhaust, and wheels for another $6-8k and you pretty much have the ZR-1 for about $65K out of pocket.

The ZR-1 is going to be seriously fast, but it's overpriced by about $20K

The ZO6 should be $15K more than the LS3 C6
The ZR-1 should be $15K more than that.

[Terry335]

Originally Posted by MacDutchski

Have you guys seen the new ZR1? Scary fast!

If you want pure power, American auto manufacturers do it best.

0-60 in 3 seconds! 1 G of lateral grip.

"It all boils down to the power-to-weight ratio and the ZR1’s is exceptional," said Chevy's Ed Peper. "Better than the Porsche 911 GT2, the Ferrari 599 and even the Lamborghini LP640. In fact, the ZR1 is expected to be the first production Corvette to achieve a top speed of at least 200 mph."

http://www.autoblog.com/photos/2009-...te-zr1/537455/

Looks like an awesome car! I've already started warming the wife up to the idea....

[turbocoins]

[QUOTE=Driver72;1857978]
it's pretty much the belief that it's
14-16% with manuals RWD cars
17-18% with autos RWD cars

About 1-2% less for FWD cars and about 3-4% more for AWD cars.

[QUOTE]

Thanks!

[Driver72]

Originally Posted by turbocoins

I'm not disagreeing with you. I appreciated the correction.

Oh, sorry dude, I just reread your post at the top if this page.
I thought you wrote, "I would disagree"

But I see you wrote, "I wouldn't disagree."

I'll edit my posts to reflect that recollection on my part.

Later.

[turbocoins]

Originally Posted by Driver72

Oh, sorry dude, I just reread your post at the top if this page.
I thought you wrote, "I would disagree"

But I see you wrote, "I wouldn't disagree."

I'll edit my posts to reflect that recollection on my part.

Later.

[OBI_agent]

Originally Posted by Carnage

go race one, the LS3's are putting down about 395HP/390TQ at the wheels stock. The V2's are putting down more TQ but about 40 less HP. Stock LS3 vs. a V2 will be a good race but if they've done any mods, it's over.

I was talking about a LS3 slushbox(automatic).

I know they have improved the auto but, not by that much compared to a manual. I think it has come close to a manual's 1/4 time but ,it's still not close enough to get as good as a manual.
And no one prefer's a manual over here(Dubai is traffic hell) So, I doubt that he will find a manual LS3 over here.