2009 Corvette ZR1 with 6.2 LS-9

05GTO · 12-01-2007, 03:11 PM

I found this on Jalopnik.com

Quote:

This is it. Thanks to an anonymous tipster we have what appear to be the very first and clearest shots yet procured of the 2009 LS9 6.2-liter V8 engine powering the 2009 Corvette ZR1 -- something we weren't expecting to see until the Detroit Auto Show in January. But, since information yearns to be free -- and whoa, nelly, do these shots show off some serious information on what will be the most serious piece of weaponry in the General's quiver come next year -- here they are and here's what we know. Essentially what you're looking at is what appears to be a standard twin-screw-type supercharger mounted below a highly efficient air-to-water intercooler system.

Now, we can't speculate if it's tied into the engine system or if it has an independent radiator system -- but we feel pretty confident all of this is a one-off, which means the General's running the show on every single horsepower above and beyond the stock horse output from the 6.2-liter V8 it all sits atop.

06brazengto · 12-01-2007, 03:16 PM

dang, thats gana be mean!

gm4life · 12-01-2007, 03:24 PM

Big discussions going on about it on the Corvette Forum. I can't wait to see the whole package. The C6 Z06 is allready a world beater and now this new one is going the set the bar vary high. Pulley swaps, tune, bolt-ons, watch out now.

koman · 12-01-2007, 03:25 PM

what's the differences between this ls9 and the ls3 outside of the obvious supercharger setting atop of it? why couldn't it be labeled the ls3 supercharged? i had seen this a few days back, posed the same question. anyhow the zr1 was a BA car at one time hopefully it'll come back as a BA car. wonder what that supercharger would do on top of my ls2? what about on top of an ls7?

gm4life · 12-01-2007, 03:35 PM

Quote:

Originally Posted by koman

what's the differences between this ls9 and the ls3 outside of the obvious supercharger setting atop of it? why couldn't it be labeled the ls3 supercharged? i had seen this a few days back, posed the same question. anyhow the zr1 was a BA car at one time hopefully it'll come back as a BA car. wonder what that supercharger would do on top of my ls2? what about on top of an ls7?

Its just the way GM does things with RPO codes to define a specific engine. Most likely the engine internally is specificly built to be supercharged, lower compression, cam, forged. Just like the L92 and the LS3 has the same block one is the truck and one is the Corvette.
It will be nice to have a factory roots/twin screw to bolt onto a LS2,7 whatever it also looks like you would have to change the acc. setup too. And you'll need LS3/L76/LS7 heads too.

koman · 12-01-2007, 05:50 PM

lowered compression...maybe then again the newest trend has been higher compression with lower boost numbers. the camshaft will probably be the major different piece in my speculative look at it. crank, rods, pistons the same as the NA version but this is a ultra high dollar car(more than i or wing nut would want to pay). more than likely there'll be dry sump oiling too much like the ls7 which has had some time to be proven in the real world. wonder how efficient this engine will be and will it be able to burn E85. i really hope this engine is pretty well done and nicely priced unlike the lt5 and become more of a production piece than a legend that no one really sees the performance of only hears of. isn't the l92 a cast iron block and the ls3 an aluminum block?

PEARL JAM · 12-01-2007, 06:39 PM

Looking at the similarities between the 3800 v6 and the 3800 supercharged, MANY parts were crossover, but the internals were different. Even the (supercharged) pistons had a top coating that the naturally aspirated did not. I suspect many differences between the LS3 and the LS9. Lord knows there will be a price differance.

gm4life · 12-01-2007, 06:41 PM

Quote:

Originally Posted by koman

lowered compression...maybe then again the newest trend has been higher compression with lower boost numbers. the camshaft will probably be the major different piece in my speculative look at it. crank, rods, pistons the same as the NA version but this is a ultra high dollar car(more than i or wing nut would want to pay). more than likely there'll be dry sump oiling too much like the ls7 which has had some time to be proven in the real world. wonder how efficient this engine will be and will it be able to burn E85. i really hope this engine is pretty well done and nicely priced unlike the lt5 and become more of a production piece than a legend that no one really sees the performance of only hears of. isn't the l92 a cast iron block and the ls3 an aluminum block?

I was just speculating nobody knows for shure until GM releases full details. Ford on the other hand don't use high compression somewere in the 8.8:1 with FI motors and have a low 8psi-ish boost. GM on the otherhand might do what you have stated high compression and with 5psi boost. From some of the spy pictures it looks like it will have dry sump and with todays tech I think it will have E85. Looking at the pictures I think the L92 is Al.

Wing_Nut · 12-01-2007, 07:05 PM

Quote:

Originally Posted by koman

(more than i or wing nut would want to pay

Dude, don't jump to conclusions. This is potentially a different league. Once again GM will be offering performance that will be hard to match at the price level. Value!

I doubt the Europeans will have an answer for the LS9 at anything near the price.

By the way, I've got a Mercedes and a Volvo in the stable at the moment. So, I'm not averse to spending money on a car. And I'm definitely not anti-euro. But, I don't kid myself about bullsh!t intangible qualities either. When you buy a premium brand you are forking over cash for something other than substance. As long as you know it, and you're OK with it, enjoy.

Wing_Nut · 12-01-2007, 07:21 PM

One thought occurs to me though.........

Why a supercharger with the inherent parasitic losses?

The LSx V8 certainly doesn't need help with low end torque. A turbo setup would likely be lighter, yield better power, better fuel efficiency, and a smaller package.