I had heard on a rumor they were building an even bigger engine than the 7L for the Blue Devil. But now.. everyone is almost confirming a 6.2 s/c. As much as I like the idea of 650HP why didn't they go with the 7L?
My only guess was that the walls where too thin to handle all the power/boost you could throw at it. But the main question why not keep the 4" stroke and get a 414CID? It grants a lot more power and easier power/psi of boost.
Any ideas on why the change? I honestly don't like it and i feel the z06 to be a more special car.
The 6.2 engine has the ability to take the added boost. GM can easily get more power out of the 6.2 liter supercharged motor. The problem they have been facing is getting the power to the ground..
The tires just can't plant more power.
Whenever a manufacturer has that problem(getting the car to plant the 650hp for acceleration and not spin) you can trust the car will be worth every penny.
As long as this blown motor comes from the factory with strong forged internals and the ability to take more punishment out of the box - otherwise it is a complete waste of time.
This appears to something Ford got right every time they rolled out a modern boosted SVT car/truck/supercar.
I would have preferred a beefed up 7.0. Maybe they could have put all their effort into more camshaft/valve train/cylinder head/tuning technology to squeeze out more power from that 427. Possibly 90hp/liter, just seems like their is so much more respect when its all NA. Plus there is so much more potential in that LS7. It would be nice to see the weight stay in the same range if possible (pretty challenging for traction). Could you imagine the power to weight ratio!!!!
As long as this blown motor comes from the factory with strong forged internals and the ability to take more punishment out of the box - otherwise it is a complete waste of time.
This appears to something Ford got right every time they rolled out a modern boosted SVT car/truck/supercar.
tell me about it the 600 rwhp guys get with the kb sc 03 04 cobra is impressive to me for the 35k price tag ya know.
and that guy joe runs 1000 rwhp(custom tt setup) on daily driven ford gt, his fuel system tranny everything is stock i think just a clutch that is damn impressive.
not to mention lightning.
so chevy does it with this thing it could be wild for sure. but i'd rather see the 427.
As time goes on, say post 2012 or so, less cubic inches combined with technologies such as direct injection, displacement on demand and forced induction will start to be come the rule rather than the exception as far as GM vehicles, including the Corvette, are concerned. With stricter emissions and C.A.F.E. standards, not to mention rising fuel prices, it simply makes sense.
This is something the Japanese have been doing for some time and the GT-R is one example of technological advancement in lieu of cubic inch displacement. GM can certainly build a forced induction engine, as witnessed by the Buick GNX for example; they dropped the ball when they discontinued producing forced induction cars. Note, I didn't mention trucks.
Although I like rumpty rump cams and big cubic inch normally aspirated engines as much as anyone, those days are probably long gone as far as production cars are concerned, with the current LS7 being perhaps the last of the breed or at least as close to one as we're likely to see again.
I've said it before but the 'Blue Devil' project is perhaps a forbearer of what is to come: fewer cubic inches and instead forced induction and other technologies, many of which are found on current imports.
That's not to state future Corvettes might have a DOHC 4-cylinder with twin turbos, but rather less cubic inch displacement with more fuel efficient and cleaner technologies including those mentioned above.
tell me about it the 600 rwhp guys get with the kb sc 03 04 cobra is impressive to me for the 35k price tag ya know.
I know a lot of guys are swapping to a KB, but I thought the '03 & '04 Cobra came with an Eaton blower running about 390 hp at the crank.
Surely you're not comparing production cars/engines to aftermarket set-ups?
Hell, if that's the case we could get an old Vega and crank out about 750rwhp for less than the cost of a new C5 Vette (when they were running around $50k).
Quote:
Originally Posted by phaze1zo6
I would have preferred a beefed up 7.0. Maybe they could have put all their effort into more camshaft/valve train/cylinder head/tuning technology to squeeze out more power from that 427. Possibly 90hp/liter, just seems like their is so much more respect when its all NA. Plus there is so much more potential in that LS7. It would be nice to see the weight stay in the same range if possible (pretty challenging for traction). Could you imagine the power to weight ratio!!!!
Frankly, I disagree with you on this. I think the LS7 is close to maxed out on potential power. You would have to go to a totally different block (like a C5R or LSX) and much more expensive internals to do much more with this engine.
I think they are trying to put out a production car with 650 hp or so to do their part in the 'performance wars' and still have the engine run trouble free. A 6.2 engine with a modest boost blower is just about right for what they are trying to accomplish.
I think the motor will be fine... I heard the reason for the 6.2L versus a 7.0L motor is due to the spacing between the cylinders. With a larger spacing between the banks they were able to stick a blower in there.. Either way, I can't wait for the unveiling. Would be nice if they offered this as a crate motor..
Been a long time since I posted - I sold my Z06 in Sept of '06.
I now have an '06 GTO that Lingenfelter / Revenge modded with a MagnaCharger, FI work, etc. 530HP - and with auto trans - it makes a sweet daily driver. I'm running 275ZR30/20 on the back and very little traction :-( But cool looking car and the SC sounds wonderul as it revs. Good enough for an old guy :-)
With stricter emissions and C.A.F.E. standards, not to mention rising fuel prices, it simply makes sense.
This is something the Japanese have been doing for some time and the GT-R is one example of technological advancement in lieu of cubic inch displacement.
I used to believe all of the "small displacement turbo fuel savings" BS until I bought the 2006 Z06. I get 24mph flying on the highway in this car and I used to get only 23mpg driving the same way in a 2 liter turbo Subaru WRX. I have a friend with a Lancer EVO and he's lucky to get 19mpg in that thing. Lets not even talk about the golly gee whiz BMW V10 that delivers 18mpg on the highway from a "supertech" 500hp engine that weighs 70 pounds more than the "yestertech" LS7.
I'm surprised to say it, but the Z is one of the most fuel efficient fast cars I've ever owned!
I used to believe all of the "small displacement turbo fuel savings" BS until I bought the 2006 Z06. I get 24mph flying on the highway in this car and I used to get only 23mpg driving the same way in a 2 liter turbo Subaru WRX. I have a friend with a Lancer EVO and he's lucky to get 19mpg in that thing. Lets not even talk about the golly gee whiz BMW V10 that delivers 18mpg on the highway from a "supertech" 500hp engine that weighs 70 pounds more than the "yestertech" LS7.
I'm surprised to say it, but the Z is one of the most fuel efficient fast cars I've ever owned!
Again, I never claimed they would be 4-cylinder, DOHC, twin turbocharged, but simply have less cubic inches with forced induction and possibly other technologies such as Direct Injection and Displacement on Demand.
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