I'm not sure you followed my comment, but that's OK. My point was in mechanical power transfer there is no "change in speed" of the power transfer based on "how far away" the power source (engine) is from the end point use (rear wheels).

 

Has it been determined yet if the TUBE HEADERS are standard on all cars or does one have to order the Z-51?

I know this was discussed maybe a month back , So tried to do a search to revisit thread, NO joy.

 

ALL C8s come with the tubular headers. That subjuct has been beaten to death.

 

after my head exploded on all the engineering stuff.. pom... thank god again that I just want to go fast.. don't even need math for that.

 

As mentioned; I tried the SEARCH feature. DO appreciate the info.

 

Some time back there was a guy who made a thread asking about flipping the manifold up side down in a ls1 with a shorty 4 to 1 header which the c8 is packing simple reverse engineering to make it work

 

Stopping-stock brakes on a C7 will put you through the windshield unbelted, C8 brakes likely as good or better.

Cooling- unless you are running the ***** of your C8 lap after lap on a racetrack you don't need additional cooling.

Mechanical life?-might matter if you are keeping the car for 30 years and driving it daily.

Launching-HP is identical between Z51 and non. 0.18 numerical gear delta virtually imperceptible and how much "launching" do you do.

Handling-Z51 would be advantageous if you are a track rat, how much time do you spend at handling limits of a Corvette on public streets.

Exhaust sound- NPP style is an option for a non Z51 equipped C8 so this is a non factor.

Wait for the Z06 if you want a faster car with all the supporting equipment.

 

No it won't. Fake news.

Fact - verifiable by Google: C8 has the smallest front rotors of ANY sports car on the US market, with the exception of the Mazda Miata. Even the 200HP BRZ (not a sports car) has bigger brakes at 12.8".

The C8's base front brakes not only look ridiculous on 19" wheels, they ARE ridiculous.

 

Uhh, Yeah, OK, so the C8 has shittier brakes than a Mazda Miata. Gotcha!

 

No. The C8 brakes has the Miata brakes beat.

But the C8 has smaller rotors than any other sports car. And they look more ridiculous on those 19" wheels than the Miata's (since Miata wheels are smaller).

 

The brakes on the C8 do "look anemic." This is a comparison with Porsche 718 Cayman GT4 that is also lighter. It has a 4 Liter NA boxer 6 with only 414 hp. Those are the large optional carbon ceramic brakes shown on the Porsche.

The C8 probably has a higher percentage weight on the rear than the Porsche so front and rear brakes are no doubt matched with the tire size and loads on high "g" stops. Note on the C8 the rear rotors are large than the front and on the Porsche the fronts are larger.

Expect the Z06 and GS C8 version brakes to be larger.

 

Oh wow, big brakes on a Porsche!

 

There is no way around it. Putting 12.6" front brakes on a premier 3,600 lbs V8 sports car with super car aspirations and 19" wheels is ridiculous. It's cartoonish.

There is no way to explain that away. It's simply a cheap reuse of engineering or a way to force you into higher packages to avoid being ridiculous.

 

^^^
Sure you can justify! Yep even my C8 Z51 13.3 diameter front rotors and 4 piston calipers won't look as good as the 14.6 inch diameter rotors with 6 piston calipers I have on my Grand Sport. BUT the C7 Grand Sport has ~50% of it's weight on the front wheels and when achieving 1+ "g" braking, significantly more weight transfers to the front. That's why it has 6 piston calipers and much larger front pads than the 4 piston rears! The C8 starts with 60% of it's weight on the rear.

Now if all you're concerned about is "bling," might as well get drilled or drilled & grooved rotors. They won't stop as well but will look "macho!"

 

Really? Why did C7Z51 has tiny 13.3" rotors and C7GS has 14.6" rotors? Weight dist is the same.

Why does C8 base has tiny 12.6" rotors and C8Z51 has 13.3" rotors (and C8GS will likely have 14.6" rotors)? They all have the same weight dist.

Why does Cayman and 911 have bigger brakes with all that weight in the back?

Face it. GM is just being cheap and putting the tiniest brakes that will fly with this apologist group. And it looks like they are succeeding brilliantly.

I guess for the polish and wax crowd brake size is un-interesting. For the I have huge HP car and do stop light drag races, the brake size is un-interesting. GM certainly knows their customer base. Bravo. Sadly, I'm in the minority, that want to drive the car on a couple of dozen track days/year and not have to change my pads once a month and rotors twice a year because they are tiny.

For me, GM will extract more money with the GS package. But, they are risking it. I may just decide to stay longer on my SS 1LE which has great brakes.

 

You drive a Camaro.... enjoy it.

The calipers on display yesterday were even larger than my C7 Z51 calipers which were already large. The brakes are nice... they will be fine. We used to race C5s on the silly slide rail PBR calipers and didn't die.

 

you absolutely MUST drive any car that has twin disc auto. Ive always insisted on manual all my life. Except I drove a P car GT3 with twin disc, game changer and bought it and never regretted a moment

 

Inaccurate comparisons - unless you're tracking. My 13.6 inch diameter rotor, 4 piston caliper 2014 Z51 stopped just fine and about the same as my 14.6 inch dimeter, 6 piston caliper 2017 GS as I don't track and probably unlike most "street drivers " I do Stop Aggressively every time I leave and come back to my house (see below pic) and several other times when after or before I enter a ~1/2 mile run between farm fields where I made an aggressive turn. Those GS 14.6 diameter rotors, 6 piston calipers on a 50% front weight car are needed for repetitive stops when tracking to avoid any fade.

The 12.6 diameter C7 Base front rotors do just fine for the "Waxer Crowd" (not a frequent waxer myself as I use long lasting Zaino! ) I should not have put that pic up of the Carbon Ceramic optional (expensive) brakes on the Porsche 718 Cayman or you'd never look a a brake rotor filling a wheel! PS: the "small: 4 liter NA engined 718 Cayman doesn't have 60% of it's weight on the rear!)

So compare the 12.6 inch diameter rotors on the Base C7 having 50% of it's weight on the front wheels and MUCH higher percentage when stopping aggressively WITH the Base C8 12.6 rotor diameter with 40% of the weight on the front wheels and higher when the "Waxer Crowd" makes that one emergency stop. The C8 will stop faster! Were you bitching about the C7?

If, like me you do use max braking frequently, as I am- get the Z51. But then when I get the C8 it will be my 6th Vette, everyone with the HD suspension/brake option. Yep even at 77 I do stop aggressively and can apply brake force better than I did when 40! For the past 37 years I exercise 7 days a week and have a leg press machine that is equivalent to a 700 lb 30 degree incline sysytem! Going to back off on the weight of my 3 sets of 10 on leg day as won't need my left leg strength for my 1st DD in 60 years without a 3rd pedal! Can't wait to make that turn onto or when leaving the 4 lane highway in front of the street I live on!

 

I learned to drive in a 56 Chevy with 3 on the tree. Presently, I am modifying the top end of my ‘13 427. I do know what a millisecond automatic is like as my wife bought a higher end Equinox that shocked me when I first gave it a little goose. A performance Corvette though, hasn’t meant a higher than stock (3.42) rear gear for some time. I have two transmissions I could put in my 427 after the build. The stock 2.66:1 six speed or a high performance Tranzilla that I believe is geared like a 2008(?) ZR1. Very close ratio. It came out of a 2010 Z06 that was raced . Go to the Corvette Museum and look at how the higher end card were geared then: 1st gear was 2.29 to 1 and 6th was .67(.63?) to 1. Even with my stock 505hp 427 the car was so torquey it was faster with the closer ratio transmission. Smooth as silk to drive on the street too compared to any other Vette at the time . To drag race you wanted one of the close ratio transmissions because they were stronger, just drop the rear gear. Now, you’re telling me a C8 is going to be faster with a 3.90 rear end as opposed to going the other way?

 

^^^
Also had a '56 Chevy small block!

BUT, checked the posts on this Thread and don't know who your last sentence is referring to??? The C8 Z51 has a 5.17: 1 dif ratio, not sure who said anything about a 3.90:1???

It’s usual when not copying the prior post you’re referring to, it’s referring to the one directly above yours. Note: to make it clear I use ^^^ as arrows point to the post directly above. Many do not. That was mine saying nothing about a differential ratio, the DCT gear ratios etc.