LTC Z06

A long time ago we had a lengthy discussion about aluminum, how it would or would not work as a direct replacement for the C6 frame, etc. Taking the facts from Rick what do our smart guys think the Z06 real really weigh? Let’s keep tabs and see who comes the closets.

So give us a WAG or do an analysis and post your poundage!!!!!!!

I'm not an engineer but I'm going with 2900lbs.

trumper Z06

~ 2990 lbs., last I heard, GM was still chasing reducing weight !!!

vetteconvert

As an engineer it goes against my best judgement to guess, YEAH RIGHT!

Ok, I'll bite.

Now true that all the Al, Mg and CFC will drop the weight, but I bet that there will be some extra weight from the LS7, clutch pack, torque tube/drive-shaft, beefed up half-shafts and body stiffening add-ons. And all those other changes that allow the car to handle the LS7 and higher cornering/braking loads and stay as reliable as the base C6.

So, I say 3050-3150 lbs. Down the middle: 3100 lbs. Curb Weight

LTC Z06

If we had a mod on this forum maybe we could stick this to the top? :o

SWCDuke

Bigger wheels/tires and brakes also add weight. Add this to any structural or driveline beefing and it's tough to get a net weight reduction over the coupe even using all cost effective weight reduction techniques.

The 3130 being bandied about sounds like a good ballpark figure - about a net 50 pound reduction from the Coupe and about the same as C5 Z06. This still makes the new Z06 lighter than any other big power sports car. IIRC the Ford GT is a little over 3300 and I think Vipers are heavier. Once Porsche gets a new 911 Turbo to market I also expect it will be a bit heavier than Z06, and the Italian exotics aren't significantly lighter either despite their all aluminum body/chassis structures.

Duke

Timmy's C5

3150 lbs. Same as the new Ferrari.

WhiteDiamond

Without the aids of composite windows and composite braking components, I don't see the weight savings being that dramatic over the Z06 C5 version. The wheels/tires are definately an add, the coupe rear window and structure are also an add, but I am guessing a 7.0L is a very minimal minus, but then we have the dry sump components and that is a big add. I am guessing it will be within a few percent of the C5 Z06, just a tad under it.

Rick mentioned the battery has been moved rearward, but I am wondering if it will actually help with the weight distribution now that the dry sump parts are most likely in the vacated space....basically, I think the Z-51 coupe may have a better weight distribution.

Todd

R9G

I'll guess that 3130 is too optimistic. The bigger wheels and run-flat tires will add a lot of unsprung weight compared to the C5 Z06 - say 40 to 50 pounds - and probably also be significantly heavier than the C6 Z51. Plus the 7L drivetrain and reinforcements will be heavier than any C5/C6 thus far - say 50 to 100 pounds. So just to get back down to the C6 Z51 weight, GM will be trying to make up for a lot using aluminum and carbon. And it helps to recall that the carbon hood on the C5 Z16 only saved 10 pounds.

The C5 FRC/Z06 had a natural advantage in that it was designed from the beginning to be a stripped-down lighter weight model. Unfortunately, there is no counterpart in the C6 line.

BTW, I've weighed two '04 Z06s and the published weight is a real on-the-road number, unlike some others. Its remarkably light for a big V8 production sports car, and the stock unsprung wheel/tire weight is down in the range of the Dymag race magnesium wheels and racing tires used back in the Corvette Challenge. GM has its work cut out to get this low again.

Scissors

3,000 lbs. at a minimum. 3,100+ is much more likely than 2,900.

Scissors

Some other cars:

Ferrari F430 - 3,197 lbs.
Porsche 997 - 3,076 lbs.
Dodge Viper - 3,410 lbs.
Ford GT - 3,485 lbs.

Runge_Kutta

Here's a revision of I post a made on the 2006 Z06 weight months ago.
The base C6 Coupe weighs 3179 pounds. How will the C6 Z06 drop weight?

ENGINE:
=> LS2 has a dressed weight of about 201kg = 443 pounds.
=> LS7 has titanium connecting rods.
=> LS7 has titanium intake valves ( springs, and retainers ??).

The connecting rods will drop from about 600g in the LS1/LS6 to maybe 475g
or so. LS1 pistons weigh 434g. An LS7 piston would be bigger and probably
beefier to withstand a 7000rpm redline. I'd say 500g each. I suspect
the LS7 piston/connecting rod assembly is still lighter than the
LS1/LS6 one. That means the crank counterweights may be a tad smaller.
Does the LS7 have DOD or VVT?? What does the dry sump system weigh?

I'd guess (wild) the engine will weigh 205kg dressed with the dry sump.

TRANSMISSION, DRIVESHAFT, DIFFERENTIAL, HALF-SHAFTS:

=> If the transmission is a T56 variant -> little weight change

http://www.ttcautomotive.com/English/products/T-56.asp (Maybe based on TUET-1806)

=> Titanium half-shafts might save 1/3 over steel (10 pounds each )

http://www.sae.org/automag/material/03-2001/timet.htm

=> Driveshaft might need to be fortified.

BRAKES AND WHEELS:

=> Ceramic brake rotors could save a lot of weight. ( 30 pounds ??)
=> Larger tires and rims are likely heavier. Maybe magnesium rims.
P275/35ZR18 (Front), P325/30ZR19 (Rear)

FRAME & BODY:

=> Switching the 4 perimeter rails from mild steel to aluminum: ( 110 pounds )
=> A carbon fiber hood in 2004 saved about 11 pounds.
=> Some body panels and wheel wells might save another 25 pounds
=> Magnesium subframes could easily save 10 pounds each (20 pounds).

OTHER:

=> A polycarbonate rear hatch has got to be worth 20 pounds.
=> Titanium exhaust: 20 pounds (18 pounds in C5)
=> Remove cushy stuff and remove sound deadening ( 20 pounds )

So, if the wheels and dry sump add 10 pounds we get

3179 - 20 - 30 - 110 - 35 - 20 - 20 - 20 - 20 + 10 = 2914
(that's a 265 pound weight loss )

I don't realistically see this car going much under 2950 pounds. I'd be
happy with 2999!! Obviously, the final weight depends on which ones of
these speculations comes true (or others).

LS1LT1

The 'supposed' specs we've all seen claimed a weight in the 2900 pound range, I'd assume that if that's true it will have to be in the high 2900s (2990 at a minimum?).
If that weight/spec is not accurate then I'd guess something in the 3000-3100 range at a maximum.

Scissors

I'll go with 3,006 lbs.

Rob 2K1

2,981

What do I win if I'm right?

Hans Grüber

I believe that figure includes the transmission.

Painrace

My GUESS is 3033#. However, I would be happy with almost any of the above numbers.

LTC Z06

One point in the big book.

Runge_Kutta

It does NOT include the transmission.

The dressed weight of the LS1 engine includes the alternator,
the power steering, the A/C compressor, the brackets, and
belts. The difference between the automatic weight and the
manual weights is the weight of the flywheel, the pressure
plate, the clutch, and possibly the bell housing. I assume that
this also holds true for the LS2. By the way, 201kg is the
approximate dressed weight of the LS2 when mated
to the 4L65-E.

Here's the dressed weight of LS1:

http://corvetteactioncenter.com/specs/z06/ls1ls6.html

Z11409

ROUTE 66

My Guess. 3050. But I'm hopeing it will be less. E.