C6 Z06 motor and CAFE

[JBsC5]

I'm sure the 200 mph C6 Z06 will get better gas mileage than any competitor..


Its just the way GM does things..

Whatever the gas mileage ends up to be...I'd imagine that the smiles per mile will be worth every penny.

 

[motorman]

I'm sure the 200 mph C6 Z06 will get better gas mileage than any competitor..


Its just the way GM does things..

Whatever the gas mileage ends up to be...I'd imagine that the smiles per mile will be worth every penny.

if the ZO-? does have a gas guzzler tax GM will only build very few because they even limit the number of 3.15 rear gears because it cuts into the CAFE.

 

[FX GS]

But I think it's reasonable speculation that a 7.0L engine will pay a guzzler tax.

Who cares? At the price that this vehicle will sell for, a few more grand is pocket change.

 

[Aurora40]

Where did you read the word "definitely" in the statments...?

I didn't. That's why I asked.

Who cares? At the price that this vehicle will sell for, a few more grand is pocket change.

CAFE doesn't amount to pocket change for GM, though. It can amount to very large fines. And the tax may not matter to buyers (though how spending an extra thou or two on a tax wouldn't bother anyone surprises me), but it does matter to the manufacturer. However, they already have two cars that pay the tax so maybe they will suck it up.

The thing about sticking with the stock engine size is that fuel economy essentially doesn't matter anymore, not even to GM (though real-world economy may matter to some buyers). The car will inherit the rating of the base C6, so the Z06 could swill fuel like an H2 if that's what it took to make wicked power (not that 400hp isn't pretty wicked already), but not impact GM's CAFE numbers any more than a base Corvette would. And there would be no extra tax for buyers to pay.

As an aside, it wasn't my intention to ruffle feathers or call other prognosticators liars. I could see the CAFE angle having some effect on the Z06, though I could also see GM saying "screw that" and going all nuts with the car. Who knows. I just thought it might make for interesting conversation.

 

[Hib Halverson]

Do you know why the three-valve head did not make production? Was it technical, or simply because it was not needed because they achieved the power they wanted through two valves?

Thanks,

Ken

I do not know why the 3v head didn't make production.

 

[motorman]

I do not know why the 3v head didn't make production.

1939 BMW used that short pushrod across the head to make a crossflow head. ford has several 3 valve head engines with their OHC design. i bet if the cost is not the problem it will show up in the trucks because it looked like there was too much mass in the system for hight RPM work.

 

[Hib Halverson]

Do you know why the three-valve head did not make production? Was it technical, or simply because it was not needed because they achieved the power they wanted through two valves?

Thanks,

Ken

I don't know why the 3v head didn't make production.

The LS7 head will be specific to that engine. It'll be CNC-ported and have 2.2-in titanium intake valves and 1.6 exhausts.

The camshaft is another new Gen 3/4 profile with .591-in. lift...truly amazing for a production camshaft.

The lower end has titanium connecting rods, six-bolt steel main caps and a 4140 forged steel crankshaft.

The rev limit is reportedly 7000 rpm. The only other production GM V8 to have that was the LT5 and it took dual overhead camshafts to do it.

The dry sump uses a belt-driven, 2-stage external scavenge pump and a conventional, crank-driven gerotor oil pump to provide oil pressure to the engine.

The question about PCV was a good one. I've yet to see one of these motors but I suspect the Gen 4 type PCV system will carry-over with the addition of plumbing to equalize the pressure in the engine and the dry sump tank.

The engine makes 500hp and 475 lbs/ft torque.

That in a car lightened-up with carbon fiber hood, front fenders and roof panel ought send Viper and Ford GT owners running to their doctors for Zoloft.

 

[Edmond]

The engine makes 500hp and 475 lbs/ft torque.

That in a car lightened-up with carbon fiber hood, front fenders and roof panel ought send Viper and Ford GT owners running to their doctors for Zoloft.

By no means am I complaining, but wouldn't it be just a little bit more of a statement if they had 500hp and 500 lbs/ft?

Is the curb weight goal going to be 2900-3000?

Will this be considered a "supercar?"

 

[OLDGOAT]

Don't worry Edmund, the aftermarket boys are getting all revved up to supply parts to increase the power of the C6 Z06. I am sure that lots of buyers of this beast won't be content with the "statement" made by 500 hp and will need to change this or that to get more. I remember vettes in the mid to late 60's when there was a wide range of engine types to choose from. All the cars where vettes and all were great. They all made a statement even a 300 hp 327.

 

[Hib Halverson]

By no means am I complaining, but wouldn't it be just a little bit more of a statement if they had 500hp and 500 lbs/ft?

Is the curb weight goal going to be 2900-3000?

Will this be considered a "supercar?"

A better question is: do you think it's a supercar?