Corvette ZO6 428ci - 505bhp

[Steffo]

Originally Posted by Bossxr8

You really have no clue do you. Australian noise regulation are way tougher than they are in the US, by around 3 decibels.

As you may or may not be aware, it varies from state to state in the USA.

Done a bit of searching, and found that the limit is 95 dB in most US states.

As for Australia, we have ADR 83/00, and according to the RTA website, new standards have come in for vehicles manufactured after 01/01/2005... with 90 dB for cars and 94 dB for motorcycle. Pre Jan 1 05 cars were limited to 93 dB.

I have heard, in person, a Corvette C5 Z06 with the LS6 GenIII, and an SVT Lightning with the S/C 5.4, both stock, and they were both.. well, very quiet, especially compared with some of HSV's and FPV's finest. Done a bit of searching, the C5 Z06 Corvette, 2001 model (the 385hp version), made 94 dB at 100% throttle (1 dB over the previous Australian limit). During normal driving, it produced 79 dB, and light throttle cruising, 59 dB.

The new Z06 apparantley produces 90 dB at full throttle. US regulations are getting lower, with California moving to introduce a max 90 dB limit on all new vehicles, and California is the strictest state in the US, so all manufacturers have to make sure their vehicles are California compliant above all else. Australia and the USA are not as far apart as you'd have us believe.

Again, there's no reason (aside from the apparant 300kW local limit, and media scare fears) that HSV could not quite easily import the LS7. They have the drivelines for it (the new 6L80E they're getting, and the T56), it fits the cars (identical size to LS2), and they can quite easily make it noise compliant (they're importing an engine, after all, the exhaust system has to be tailored to suit Commodore... why do you think our LS2 outputs 297kW 530Nm and not 299kW 542Nm like the Corvette C6 - its the exact same engine).

[SSbaby]

Originally Posted by NC 5ltr

nah man im sure it was the ls7,sounded like ,it looked like it and went like it.
going around the track they were both power sliding around the corners.

Im not sure though that the ls7 would chew and spit out a 8.3 litre 383kw v10 though

When you think about it... the Viper is around 150-200kg heavier... would you then be so sure about it?

It's not all about engines...

[SSbaby]

And btw, maybe this article could shed some light on the respective merits of both both performance cars...

Thus Hill is being modest when he comments, “Our benchmark car was the Porsche 911 Turbo—that’s a car we purchased and have present whenever we’re doing an important assessment.” And then he can’t resist taking the expected swipe. “We also have a Viper, but we knew we were going to leave the Viper far behind,” he adds, fighting to suppress the hint of a mischievous schoolboy smile tugging at his mouth. The new, more powerful Viper GTS may prove Hill wrong, but he could to varying degrees add 911 Carrera S, Aston Martin DB9, Lamborghini Gallardo and Ferrari F430 to the hit list. The new 997-series 911 Turbo, like the Ford GT, should match up well with Z06, but even if these cars ultimately prove quicker, they likely won’t leave the Z06 “in the dust.” Those cars will also demand buyers dig far deeper into that offshore account.

http://www.autoweek.com/article.cms?articleId=103066

[Bossxr8]

Originally Posted by Steffo

As you may or may not be aware, it varies from state to state in the USA.

Done a bit of searching, and found that the limit is 95 dB in most US states.

As for Australia, we have ADR 83/00, and according to the RTA website, new standards have come in for vehicles manufactured after 01/01/2005... with 90 dB for cars and 94 dB for motorcycle. Pre Jan 1 05 cars were limited to 93 dB.

I have heard, in person, a Corvette C5 Z06 with the LS6 GenIII, and an SVT Lightning with the S/C 5.4, both stock, and they were both.. well, very quiet, especially compared with some of HSV's and FPV's finest. Done a bit of searching, the C5 Z06 Corvette, 2001 model (the 385hp version), made 94 dB at 100% throttle (1 dB over the previous Australian limit). During normal driving, it produced 79 dB, and light throttle cruising, 59 dB.

The new Z06 apparantley produces 90 dB at full throttle. US regulations are getting lower, with California moving to introduce a max 90 dB limit on all new vehicles, and California is the strictest state in the US, so all manufacturers have to make sure their vehicles are California compliant above all else. Australia and the USA are not as far apart as you'd have us believe.

Again, there's no reason (aside from the apparant 300kW local limit, and media scare fears) that HSV could not quite easily import the LS7. They have the drivelines for it (the new 6L80E they're getting, and the T56), it fits the cars (identical size to LS2), and they can quite easily make it noise compliant (they're importing an engine, after all, the exhaust system has to be tailored to suit Commodore... why do you think our LS2 outputs 297kW 530Nm and not 299kW 542Nm like the Corvette C6 - its the exact same engine).

Exactly, Australia's limit is lower than in the US.
I never said HSV couldn't use the engine, just that it wasn't a case of bolting it in and off they go like you stated earlier.

[Steffo]

Originally Posted by Bossxr8

Exactly, Australia's limit is lower than in the US.
I never said HSV couldn't use the engine, just that it wasn't a case of bolting it in and off they go like you stated earlier.

I never said they can just bolt it in, but it wouldn't be too difficult to acheive either.