Pushrod Supercar...I love it.

[Onikaze]

Rock!

I imagine the extra 800 or so pounds the SLR has over the Z06 probably helps keep it on the track a little better.

Apparently, that picture is the landing after a bouncy landing from Quiddelbacher-Hohe.



Either way, same Power/Weight, and everyone is saying the 7'43 was a Z06, not the Blue Devil.

The C5 Z06 has a 7'56 time I think, and the C6 Z51 ran close to that.

I'd expect 10 seconds or more out of the Z06.

 

[Dave A]

Blazin's not saying the 7'43 was a Z06 and he works for GM on the Z06. I'm not rulling it out, but it's best not to jump to conclusions because they can sometimes jump out and bite you on your a$$.

 

[JNasty4G63]

Don't want to show up their premiere sports engine, huh? ...figures.

Nothing new for them. Thats the reason the Sy/Ty combo was only sold for a very short ammount of time. Can't have a couple trucks out there that are cheaper AND faster than the "Big Dog" of the brand. Just doesn't work. They did the same thing with the LS1 F-body cars. They had basically the same setup as the Vette, but had to stump it down to keep the Vette looking faster. Whatever works for them.

Hilg

 

[PS]

You'd think they'd just make the vette faster. . .

. . .but no.

 

[Joey D]

Apparently, that picture is the landing after a bouncy landing from Quiddelbacher-Hohe.

The suspension on the Vette is very stiff, no wonder you got that bounce. I bet the drivers back killed him after the ride around the ring.

Either way, same Power/Weight, and everyone is saying the 7'43 was a Z06, not the Blue Devil.

The C5 Z06 has a 7'56 time I think, and the C6 Z51 ran close to that.

I'd expect 10 seconds or more out of the Z06.

Very very possible, like I said GM doesn't tell me sh** for whatever reason...its like a big secert.

Blazin's not saying the 7'43 was a Z06 and he works for GM on the Z06. I'm not rulling it out, but it's best not to jump to conclusions because they can sometimes jump out and bite you on your a$$.

It's either the Z06 or BD. I'm trying to find out really I am, but I will more then likely know closer to the 2006 NAIAS.

Nothing new for them. Thats the reason the Sy/Ty combo was only sold for a very short ammount of time. Can't have a couple trucks out there that are cheaper AND faster than the "Big Dog" of the brand. Just doesn't work. They did the same thing with the LS1 F-body cars. They had basically the same setup as the Vette, but had to stump it down to keep the Vette looking faster. Whatever works for them.

It's the GM "Corvette Penis Envy" or so what we call it around the office. The Vette has to be the fastest car in the fleet for whatever reason.

You'd think they'd just make the vette faster. . .

. . .but no.

It's already too fast.

 

[JNasty4G63]

It's the GM "Corvette Penis Envy" or so what we call it around the office. The Vette has to be the fastest car in the fleet for whatever reason.

Oh totally. I agree. Its kind of silly.

Hilg

 

[skip0110]

Nothing new for them. Thats the reason the Sy/Ty combo was only sold for a very short ammount of time. Can't have a couple trucks out there that are cheaper AND faster than the "Big Dog" of the brand. Just doesn't work. They did the same thing with the LS1 F-body cars. They had basically the same setup as the Vette, but had to stump it down to keep the Vette looking faster. Whatever works for them.

Hilg

The GNX suffered the same fate (killed as soon as they relized the full potential). And I suspect thats the reason they killed the Fiero as soon as they got it right, although I havent seen any evidence to this idea.

 

[Onikaze]

I'm still gonna go with GM, and Magnussen saying it was a Z06.

Again, with 600+ hp, and 2900 Lb weight, I would be very disappointed if the BD only ran a 7'43.

 

[Driftster]

IF..it were the bluedevil, wich I doubt..

It'd be hard for a 2900lb car with 600+ ponies to get "Great traction" on a foggy day...So that time COULD happen..

 

[niky]

It's the GM "Corvette Penis Envy" or so what we call it around the office. The Vette has to be the fastest car in the fleet for whatever reason.

It's already too fast.

... got to remember that... "CPE" Syndrome... I think a lot of manufacturers suffer from that... Nissan's got a lot of cars with the exact same engine producing all kinds of numbers just because the most expensive one HAS to be the fastest.

And yeah, more power in the Vette would be kind of useless for everyday driving... I think every single HP over 300 is just too muh for anything... but then again, I couldn't afford the tires anyway.

 

[Perfect Balance]

Personally I'm not a big fan of pushrod engines. They have a lot of uneeded parts. Whats the deal with the whole pushrod idea. My opinion, good waste of space, parts, and reliability. Sure, it has loads of power, but look how big the engine is. A honda s2000 engine has only 2 liters, but 240hp. If the honda was running as much liters as the corvette, it would be pushing 600 horsepower, stock!

 

[csmaster09]

A pushrod engine is generally much cheaper, smaller, and lighter than an OHC engine of the same displacemnt. I know there is a picture somewhere of the ford 302 pushrod and the 4.6 dohc mod v8. the 4.6 is MUCH larger.

 

[super cirrus]

A honda s2000 engine has only 2 liters, but 240hp. If the honda was running as much liters as the corvette, it would be pushing 600 horsepower, stock!

But it doesn't, so ha.

 

[Layla's Keeper]

Not to mention as a pushrod engine only has one cam, two lifters per cylinder, and two valves per cylinder, THERE ARE FEWER COMPONENTS.

Hell, in GARRA Rolex Daytona Prototype competition Lexus, BMW, and Ford have all stated that the Pontiac 5.0L pushrod V8 has a significant advantage over their DOHC engines because it's a more compact and lighter powerplant with a lower center of gravity.

 

[BlackZ28]

My opinion, good waste of space, parts, and reliability.

You'd be surprised how reliable these are..

 

[skip0110]

They have a lot of uneeded parts.

Actually, it is the DOHC engines that have the extra parts...not many people realize that pushrod engines are actually much easier to get to rev high and rev quickly if the valvetrain is designed correctly, since there is much less inertial mass.

 

[Driftster]

ROFL...I havn't heard the "HP Per liter" dispute in a good 5 months...

Thanks to whoever mentioned the S2000 comment....

You made my hour..

 

[Dave A]

I think you last heard it by me because my mind went blank and I needed backup. When I'm talking big engines thats my backup when my mind goes blank and I need to look something up, I let somone tell me it meaningless info, even though I know it's pretty meaingless since both have advantages and dissadvantages depending on how you intend to market the car and use it, and look up whatever I haven't found yet I wa looking for or whatever.

 

[Layla's Keeper]

Well, big engine, small engine, wankel, SOHC, DOHC, OHV, turbo, supercharger.

None of it really matters because they're all just concepts until somebody builds the damn thing. It's all up to the application to determine just how good - or how bad - something really is.

That's why you can have a 390ci AMC V8 that won't breathe above 5000rpm because of the shape of the combustion chamber, size and path of the ports, and size of the valves, but you can have 396ci Chevy V8's that'll scream up to 8200rpm.

 

[Perfect Balance]

Not to mention as a pushrod engine only has one cam, two lifters per cylinder, and two valves per cylinder, THERE ARE FEWER COMPONENTS.

Maybe fewer parts, but having only 2 valves per cylinder isn't something to brag about. I dont think they would make racing engines with 5 valves per cylinder if it was worse. Having only one cam for each 4 cylinders only puts more stress on the camshafts. Well, not really considering it only has two valves per cylinder, but as I stated before...

 

[Jay]

Maybe fewer parts, but having only 2 valves per cylinder isn't something to brag about. I dont think they would make racing engines with 5 valves per cylinder if it was worse. Having only one cam for each 4 cylinders only puts more stress on the camshafts. Well, not really considering it only has two valves per cylinder, but as I stated before...

In my experience these debates have never gotten anywhere except for people arguing, please lets get back on topic about the Corvette and not debates about which engine technology is better.

 

[Layla's Keeper]

They make them with two valves, with three, with four, with five. It's all a matter of how good the design is.

As I pointed out. In GARRA Rolex Daytona Prototypes it's a pushrod 5.0L V8 from the same family as the Corvette's engine that dominates because it provides not only good power and torque, but it's also a compact, lightweight engine with a low center of gravity that aids in cornering.

Or how about the old WSC category that became LMP? Remember the Riley & Scott MkIII? With Ford and Oldsmobile power, the R&S gave the Ferrari 333SP fits all through the 90's and even remained competitive up until the demise of the SRP1 class of GARRA competition.

Need I remind you of the Chrysler Dallara LMP's which used a converted 410ci sprint car engine? How about the Panozs and their Roush Racing built NASCAR V8's?

Pushrods work just fine in racing so long as they're incorporated into a good design. The quality of the design is all that matters, not the concept of the design.

 

[niky]

@PERFECT BALANCE: Why? You started the debate!

Personally I'm not a big fan of pushrod engines. They have a lot of uneeded parts. Whats the deal with the whole pushrod idea. My opinion, good waste of space, parts, and reliability. Sure, it has loads of power, but look how big the engine is. A honda s2000 engine has only 2 liters, but 240hp. If the honda was running as much liters as the corvette, it would be pushing 600 horsepower, stock!

^And that's the worst anti-pushrod debate I can think of... I'm personally a fan of DOHC and Variable timing... but to say that a pushrod is a waste of parts, space and reliability? Come on... the only thing American pushrods waste is displacement and gas... and with new technologies coming on line, they might even become *gasp* moderately less guzzly in the years to come.

Ok... back on topic? Which was... pushrods?

 

[Jay]

Ok... back on topic? Which was... pushrods?

Which was the Corvette Z06.

 

[Revheadnz]

I'm still gonna go with GM, and Magnussen saying it was a Z06.

Again, with 600+ hp, and 2900 Lb weight, I would be very disappointed if the BD only ran a 7'43.

Of course, the fact that it the car isn't even finished and is still in a state of testing, let alone it is probably not reliably producing this 600+hp yet, with a driver who'd never driven the BD on the 'Ring before makes that an incerdibly quick lap time. I'm sure we can expect a much quicker lap once the car is finished.

 

[niky]

I just realized something else... the new C6 body is supposed to be more slippery (low Cd)... so how does it handle at high-speeds? Does the new Z06 have any additional aero over the regular C6 Vette'?

 

[Driftster]

front fascia's slightly diff...aswell as the side brake cooling ducts..
as for more downforce...there's nothing on the exterior that implies such..but...I could be wrong and I probably am

 

[skip0110]

Maybe fewer parts, but having only 2 valves per cylinder isn't something to brag about.

The 2 valve LS7 heads flow 360 cfm on the intake. The 4 valve DOHC LT5 heads flow 326 cfm on the intake side after porting. There is nothing that says 2 valve heads can't out-perform 4 valve heads. In fact, the area between the 2 intake valves often causes a lot of turbulence and ruins the flow.

 

[super cirrus]

skip, your my hero.

 

[Driftster]

it's all about dimensions....


Don't start comparing flow #'s on 2 entirely diff heads in an argument about the cfm movement of 2v vs 4v's..

Unless you can get the # of valves to be the only variable..it doesn't really work