starchedup

People may have posted something similar prior if so I apologize for the rehash but...

Have you seen the new Cadillac XTS? Car & Driver has a write up on it. I just saw the commercial for it and I think it gives us good insight as to what the Z06/ ZR1 will look like... Assuming they make both (probably).

I suspect of they will have a Z06 & ZR1 and the Z06 will have a supercharged 6.2L and the ZR1 will have a twin turbo 6.2L.

Your thoughts?

tws

twin turbo would be the schizz!

BuddhaZ06

That's been my guess for at least a year but I've doubted it here lately

LT1xL82

I suspect of they will have a Z06 & ZR1 and the Z06 will have a supercharged 6.2L and the ZR1 will have a twin turbo 6.2L.





Would the difference between those two motors be enough to differentiate the two models?

b4i4getit

Check this.

http://gmauthority.com/blog/2013/02/...pirated-setup/

sam90lx

I would love for this to be true but it is from Feb 2013.
427 NA L88! Enough said.

RC000E

Using both means of forced induction, you could certainly create two motors with entirely different characteristics. The supercharger vs turbo debate rages on, but new factors such as variable cam timing change the game even further.

The fact is, superchargers take power to make power vs turbos use essentially what is waste energy (exhaust). The favortism with superchargers has always been low-mid rpm torque, but with variable cam timing and ever advancing turbo technology, this is becoming less true. In addition, turbos are far more efficient, and can be intercooled more easily (vs roots style blower).

If you look at the c6 zr1 vs c6 z06 at nurburgring, the difference, despite 100+ hp advantage is almost moot. Direct from Mero's mouth, its because the zr1 has an over abundance of torque. There comes a point where exit speed suffers too much because it cant get that torque to the ground.

It was the same situation with cars I built. We built an LS7 Factory Five GTM and an LS2 FF GTM and the LS2 car was faster at three of the four tracks we tested at. I just couldnt get the LS7 car out of the corner so
I was using the power advantage to catch the other between turns.


With the new zr1 being turbo'd you can utilize that variable timing to spool the turbo's earlier but get adequate torque in the lower rpms, then use a nicely sized set of twins to make a high hp figure, while intercooling the hell out of them. I called turbo a year ago and I am not happy the z06 likely wont be n/a...but inevitably, N/A is costly and forced induction aint. The hp/dollar factor rules.

BAD2000TA

Awwwwwww.......darn!!!! 427 Would be awesome!

starchedup

This one was from Sept: http://gmauthority.com/blog/2013/09/...vette-z06-yet/

Me likely LIKEY!

OnPoint

Not much there.

skank

I've heard about this for a while now from a very good source. A 427, 7.0 version of the LT1. That's what is going to be shown at Detroit in January. ZO6/ZO7 is 427 and we've seen the photos of the C7 ZR1 motor LT4 or LT5. It's a done deal.

starchedup

Then it better receive a MAJOR bump in power cause they're using the LS7 in the Camaro now too and if its just low to mid 500HP than I call that a EPIC FAIL.

1985 Corvette

Sam, I know you love your L88s but those things ran on 103 leaded petrol and were only happy once the rpms got up high. You know today's "hardcore" hipo Vette buyers cruising to cars and coffee meets would never tolerate a modern version of that car. "No bluetooth in my L88 WTF?"

Edit: Thinking about it though, the new LT1 is shades similar to that old L88. Swap out the manifolds to headers and you get a surprising bump in output. Not bad for a "run of the mill" standard Vette engine. I used to think the LS3 gains were impressive with a header swap until I saw the LT numbers.

sam90lx

I was thinking a low compression L88 that could run on our water blended 91 octane fuel.

sam90lx

Skank, if you are right....I'm buying you a bottle of Crown!
You just have to come pick it up!

Also Skank, any idea what motor will go in the Wide Body vert we have seen camo pics of? I would assume the 427?

sam90lx

I think it would work with 550-565 hp and lose a few pounds.

TTRotary

I'll go one better Sam. If skank is right, I'll be one of the first in line. I really don't see any other engine solution if they expect to keep weight within a reasonable range. The car is already at 3,450-3,500 and any FI setup will add 100lb, whether it is turbos or SC.

Jim at Pebble said to me that the car would be a segment leader in the use of lightweight composites. Think carbon wheels, brakes (a given), and possibly even suspension components to reduce the unsprung weight. We'll see. Won;t be long now.

sam90lx

I wonder if they can use those materials and keep it around 80-90k? I would think the FI car will top 100k.

1985 Corvette

It's plausible. I would stand behind it happening at some point. "These are the last of the 427s".....in the C6 with a wink and a nudge. Marketing them as "the last" was too tempting to pass up to push units. We got the LS9, they didn't give a damn about a gas guzzler tax. Our very existence in modern society is about defying expectations. We can achieve amazing things in this world but apparently making a 427 be compliant with today's world is impossible? People are crazy if they think they are scared to bring back 7.0 liter displacement, especially with the possibilities of DOD applied to a DI 427. 7.0 liters that pulls down 30 mpg and cranks out 600 hp when you hit the pedal all the way to 7K rpm. Can you say engine of the year?

RichmondC7

Car fans are attracted to speculation the way Lutherans are attracted to jello.

Here is a link to a Motor Trend Wide Open Throttle interview with the Pres. He leaves some strong hints that the future direction for Cadillac the Camaro and Corvette are going to be architected in such a way that they stay ahead of their nich competition and leverage high performance investments.