Z06 vs Viper T/A

[WHAMMO]

N/A FTW. I know GM was supposed to develop a N/A engine at first for the Z06 but emissions was the problem and they had to go supercharged.

I wonder why Ford can develop a 5.2 N/A and pass emission with 500+hp. Is it because Mustangs are sold in bigger numbers compared to the Vette??

Anyway this is bad news for the next ZL1. Track beast that cannot go as fast as a LS7 Vette??

Why the **** they didnt go with a ****ing DI 427 :(

Next vid up: Hellcat beating a Z06?

[Denis]

Originally Posted by mlee

LOL... didn't take long for Nineballs video to make it here. Good stuff for sure.

oh yea, couldn't resist as soon as I saw it on his Facebook.

[newmoon]

Great video, would have been nice to have a Hellcat in that row as well.

[shaffe]

Originally Posted by WHAMMO

N/A FTW. I know GM was supposed to develop a N/A engine at first for the Z06 but emissions was the problem and they had to go supercharged.

I wonder why Ford can develop a 5.2 N/A and pass emission with 500+hp. Is it because Mustangs are sold in bigger numbers compared to the Vette??

Anyway this is bad news for the next ZL1. Track beast that cannot go as fast as a LS7 Vette??

Why the **** they didnt go with a ****ing DI 427 :(

Next vid up: Hellcat beating a Z06?

That is a good question. Only thing I can think of is maybe it has something to do with the modular design vs pushrod? Hopefully someone smarter chimes in lol

[mlee]

Originally Posted by Denis

oh yea, couldn't resist as soon as I saw it on his Facebook.

Here's the write-up..
https://www.facebook.com/pages/Devia...12?pnref=story

[rayhawk]

Originally Posted by shaffe

That is a good question. Only thing I can think of is maybe it has something to do with the modular design vs pushrod? Hopefully someone smarter chimes in lol

Well it is easier to make a 4 valve motor meet emissions standards than a 2 valve, but I don't think that is the main reason. If you look around the industry, there are fewer and fewer high performance N/A motors. I believe the Ford 5.2L motor will be a compromise on several fronts. It is almost certainly more expensive than a forced induction engine at the same power level. Even for a DOHC motor, that 8200 rpm redline means expensive parts to make it live. It will also be a compromise down low, with mediocre low end power that many people aren't accustomed to. Personally, it sounds like it is shaping up to be a badass track engine, I am just not sure people will like it in traffic.

I believe GM didn't feel they could meet the desired power number so they gave up quickly on a DI 427 motor. Maybe they wanted 600 and when they could only get 550 they decided to go a different route. I know they said it made less power but I call BS on that, they weren't specific on what it made. The Z06 is a very important halo car to GM though, so if there are significant shortcomings (like it can't beat a viper) I believe GM will fix these issues. People do push these cars and expect them to meet the claimed performance.

[ilirg]

Looks like viper is king of the roll race. Interested in seeing how these two match up on the twistys now!

[Denis]

Originally Posted by ilirg

Looks like viper is king of the roll race. Interested in seeing how these two match up on the twistys now!

the Viper is no slouch there either...should be interesting for sure.

[Jims Mongoose]

LIke i said above, this should have been a close race something is wrong.

Horsepowers are about the same etc. I get it that in different speed ranges different cars make power under the curve differently, and gearing etc. But it should not have been such a walk away.

If it's not this particular car then GM has a problem with this new Z06.


Hope it gets straightened out fast.

Jim

[mlee]

What was cool about this run is neither car / driver was marketing or selling anything. Just a couple of true car guys doing a totally un-biased test on two of the fastest US production cars out there. KUDOS to that.

The only thing I see to help the Vette was to use no lift shift, but still would not have made up that difference. Quite sure we will see more of this from the magazines and performance shops but this was the real deal. Z fans will just have to deal with it.

[ilirg]

http://m.autoevolution.com/2015-corv...tup-89790.html

[DGthe3]

Originally Posted by WHAMMO

N/A FTW. I know GM was supposed to develop a N/A engine at first for the Z06 but emissions was the problem and they had to go supercharged.

I wonder why Ford can develop a 5.2 N/A and pass emission with 500+hp. Is it because Mustangs are sold in bigger numbers compared to the Vette??

Anyway this is bad news for the next ZL1. Track beast that cannot go as fast as a LS7 Vette??

Why the **** they didnt go with a ****ing DI 427 :(

Next vid up: Hellcat beating a Z06?

GM has made a 500+ hp NA engine, they did it a decade ago. Its called the LS7. It currently powers the Z/28. The problem with the C7 is, if you have a power to weight target of something like 5.5 lb/hp, a NA Z06 would still need well north of 600 hp. That is very difficult to do while meeting emissions, which is why so few engines accomplish it.

Larger production numbers don't help an engine meet emissions requirements. If anything, a low volume car has an advantage because I think there are exemptions available for ultra-low volume cars. But both the Z06 and the GT350 will be grossly exceeding the production cap (I think its less than 30 cars over the entire production run) so that exemption doesn't factor in.

[AZCamaroFan]

lol , i saw a Viper last week and i was shocked. never see them out here. in fact i saw 2 Ferrari's, 3 Maserati's and one Aston Martin over the weekend on the street. Plus 2 Stingray's. Whatever the Viper can or can't do is kind of moot considering they don't sell.

[PYROLYSIS]

Should have went with the recommended easy break in.