2009 Chevrolet Corvette ZR1, officially revealed for all the world to see

[Bigdeezs]

I dont know that I would...ZO6 for 70Gs leaves me 30k in mods...bet I'd be toolin up your ZR1 with that much extra cash into my ZO6 Plus I have quite a bit more displacement to work with.

[bluefields88]

I dunno, everywhere I read about the ZR1 they say that the LS7 doesn't have thick enough walls for boost. I don't know how much more power you can get out of it than what it comes with, but maybe that's because not many people want to mess with such an expensive engine, and I haven't heard much.

[Bigdeezs]

I dunno, everywhere I read about the ZR1 they say that the LS7 doesn't have thick enough walls for boost. I don't know how much more power you can get out of it than what it comes with, but maybe that's because not many people want to mess with such an expensive engine, and I haven't heard much.

Yeah I heard that's why GM went with the 6.2L. But I think the LS7 would hold up to a big cam and 150shot . This way you retain that 200lbs advantage in weight while still putting down some sick numbers.

[jhaines]

Keep in mind that that they have added weight to the vehicle for some of the changes. These items would add weight:

• supercharger
• aluminum intake manifold for supercharge/intercooler
• intercoolers
• intercooler coolant pump
• intercooler coolant
• intercooler heat exchanger
• larger accessory drive belts and pulleys (primary and secondary)

That is probably at least a good 100 lbs or more they have to make up for.

Some things that might add weight (dependng on the design):

• larger tires front and rear
• larger wheels front and rear
• liquid to liquid oil cooler
• front air dam extension
• larger rear spoiler
• bigger brakes (I know they are carbon but they are bigger too)
• new half shafts

I know they worked very hard to reduce weight, especially in the front end, to counteract the weight they added but they had already worked fairly hard on reducing the weight on the Z06 so getting the added weight back out is very hard (and expensive) if you don't want to reduce content. Once the big items are gone, each time you want to reduce more weight it gets harder and more expensive.

I'd be surprised if that "Curb weight of approximately 3,350 pounds (1,519 kg)" is accurate. The Z06 weighs less than that, and the ZR-1 has a bunch of carbon fiber components to make it lighter. I was assuming it would be more like 3,000 pounds.

[jhaines]

Yes, the 2009 ZR1 has a dry sump system like the Z06 (EDIT - other than the capacity system changes someone else already posted information about - what I meant was that the ZR1 is also a dry sump engine and did not go "back" to a wet sump system).

Also guys do you know if it has the dry sump system?

[jhaines]

I am fairly certain the 2009 ZR1 has a higher carbon fiber content than the 2006-2009 Z06.

The z06 also has the same amount of carbon fiber, but i agree it should be lighter

[jhaines]

I have seen numbers between 2000 and 3000 for annual volumes quoted in different magazines. Not sure what is the correct number.

There only making 2000 per year though. Id honestly expect dealers to be asking double the MSRP, just like Ford did with the GT.

[basballny2]

looks sickkk

[jhaines]

We have run over 25 psi of boost in the LS7 blocks with no signs of liner movement or failure. For GM's durability cycle the LS7 block may not be strong enough (and I saw "may" because I haven't seen or been told anything to confirm that) but for most people's load cycles at these power levels, the LS7 block has proven itself to be very durable.

Keep in mind that given the displacement of the LS7 engine, the cylinder pressures needed to make these horsepower levels are much less than the cylinder pressures seen in many much lower horsepower production engines (that are much smaller in displacement so need much higher cylinder pressures to make power).

Now if this was an offshore marine engine at 1000 hp continuous operation, that would be a different story and it would require testing and durability work (and the LS9 block probably wouldn't be enough either) but at 800 or 1000 or 1500 hp in a car, you can't stay in boost for very long before you get to the end of the quarter mile, reach the next turn, run out of road or see flashing lights in your rear-view mirror. Even in an all out race car with sticky tires, great brakes and chassis - let alone a street car.

I dunno, everywhere I read about the ZR1 they say that the LS7 doesn't have thick enough walls for boost. I don't know how much more power you can get out of it than what it comes with, but maybe that's because not many people want to mess with such an expensive engine, and I haven't heard much.