C7 engine?
Le Mans Master
Joined: Jul 2000
Posts: 6,559
Likes: 4,501
From: North Dallas 40 TX
Do you mean quiet? Mostly that is due to corporate noise standards.
What is wrong with the LS? Is it not powerful enough? Is it not light enough? Is the fuel efficiency not high enough? The LS3 compares pretty favorably in all reguards. I would expect the next change to be direct injection, as it will increase both power and fuel economy. I would expect a 5-15% increase in both, unless they decrease the diplacement.
What is wrong with the LS? Is it not powerful enough? Is it not light enough? Is the fuel efficiency not high enough? The LS3 compares pretty favorably in all reguards. I would expect the next change to be direct injection, as it will increase both power and fuel economy. I would expect a 5-15% increase in both, unless they decrease the diplacement.
Drifting
Joined: Jun 2003
Posts: 1,316
Likes: 1
From: Ridgewood NJ
Unlike the 6.0/7.0, which is a ground-up race engine that only shares basic architectural dimensions with the production small block, the 2010 C6.R's V8 is a new 5.5-liter unit that will indeed be derived from the production engine found in roadgoing Corvettes. In fact, the 5.5-liter race engine will be built at GM's Performance Build Center alongside ZR1 and Z06 V8s.
Fehan has confirmed that the 5.5 is running on the dyno and will make its race debut at the 12 Hours of Sebring in March. We don't have any additional details on the new engine yet, although we were told earlier that it is based on the next-generation production small-block, which we expect to see in the Corvette soon.
Fehan has confirmed that the 5.5 is running on the dyno and will make its race debut at the 12 Hours of Sebring in March. We don't have any additional details on the new engine yet, although we were told earlier that it is based on the next-generation production small-block, which we expect to see in the Corvette soon.
Advanced
Joined: Jan 2008
Posts: 87
Likes: 0
From: Grass Valley California
Ok, the young, lurking noob is going to make his prediction. lol
5.5 liter, direct injection. Still 400+ hp
It's a win/win. GM gets to make a smaller, more fuel efficient engine, while at the same time maintaining the current power outputs of the LS2/3.
So that renders moot the old theories of GM creating a smaller, lighter, Solstice-sized C7 with a weaker engine. Screw that weight ricer logic. :P
Before anyone says, "Why not just add D/I to the 6.2? ZOMG! EVEN MOAR POWER!!!" I honestly think a lot of people, and probably GM management, feel that the base Vette already has enough horsepower. I mean c'mon, 400+. Why make it even more unnecessarily fast when they can simply maintain all the awesome performance you already have while reaping much better fuel economy. It's a no-brainer, imo.
5.5 liter, direct injection. Still 400+ hp
It's a win/win. GM gets to make a smaller, more fuel efficient engine, while at the same time maintaining the current power outputs of the LS2/3.
So that renders moot the old theories of GM creating a smaller, lighter, Solstice-sized C7 with a weaker engine. Screw that weight ricer logic. :P
Before anyone says, "Why not just add D/I to the 6.2? ZOMG! EVEN MOAR POWER!!!" I honestly think a lot of people, and probably GM management, feel that the base Vette already has enough horsepower. I mean c'mon, 400+. Why make it even more unnecessarily fast when they can simply maintain all the awesome performance you already have while reaping much better fuel economy. It's a no-brainer, imo.
Le Mans Master
Joined: Mar 2006
Posts: 5,323
Likes: 2
From: Northern NJ
Ok, the young, lurking noob is going to make his prediction. lol
5.5 liter, direct injection. Still 400+ hp
It's a win/win. GM gets to make a smaller, more fuel efficient engine, while at the same time maintaining the current power outputs of the LS2/3.
So that renders moot the old theories of GM creating a smaller, lighter, Solstice-sized C7 with a weaker engine. Screw that weight ricer logic. :P
Before anyone says, "Why not just add D/I to the 6.2? ZOMG! EVEN MOAR POWER!!!" I honestly think a lot of people, and probably GM management, feel that the base Vette already has enough horsepower. I mean c'mon, 400+. Why make it even more unnecessarily fast when they can simply maintain all the awesome performance you already have while reaping much better fuel economy. It's a no-brainer, imo.
5.5 liter, direct injection. Still 400+ hp
It's a win/win. GM gets to make a smaller, more fuel efficient engine, while at the same time maintaining the current power outputs of the LS2/3.
So that renders moot the old theories of GM creating a smaller, lighter, Solstice-sized C7 with a weaker engine. Screw that weight ricer logic. :P
Before anyone says, "Why not just add D/I to the 6.2? ZOMG! EVEN MOAR POWER!!!" I honestly think a lot of people, and probably GM management, feel that the base Vette already has enough horsepower. I mean c'mon, 400+. Why make it even more unnecessarily fast when they can simply maintain all the awesome performance you already have while reaping much better fuel economy. It's a no-brainer, imo.
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Race Director
Joined: Nov 2003
Posts: 16,066
Likes: 4,149
From: Bergen county NJ
No way GM will roll out a new c7 corvette without bumping the power up over the impressive ls3.
Since my 3.6 DI V6 in my 08 CTS has 50 ponies more than the 3.6 that was available without DI..
I'm guessing well see at least 30 to 40 more hp in the C7 V8 compared to the LS3.
GM will probably not change over the V8 in the camaro SS in the same year as they release the C7 corvette...so with that said...GM will also not allow the camaro to produce the same amount of hp that the corvette makes...
hence more power than the LS3's 436hp for the new C7 corvette..
Lowest hp for the lighter C7? 450hp...more probably 475 hp.. and the car will be 150 lbs lighter than the C6 through using higher strength hydroformed steel frame rails..
There is also a new development in the thickness of the hydroformed steel frame rails as they met up with other chassis structural points...giving greater rigidity and lighter weight..
With Ed Wellburn designing the C7 you can bet it will be stunning as well. His people are doing a great job with all their new designs. I expect nothing less with the C7.
JMO
Since my 3.6 DI V6 in my 08 CTS has 50 ponies more than the 3.6 that was available without DI..
I'm guessing well see at least 30 to 40 more hp in the C7 V8 compared to the LS3.
GM will probably not change over the V8 in the camaro SS in the same year as they release the C7 corvette...so with that said...GM will also not allow the camaro to produce the same amount of hp that the corvette makes...
hence more power than the LS3's 436hp for the new C7 corvette..
Lowest hp for the lighter C7? 450hp...more probably 475 hp.. and the car will be 150 lbs lighter than the C6 through using higher strength hydroformed steel frame rails..
There is also a new development in the thickness of the hydroformed steel frame rails as they met up with other chassis structural points...giving greater rigidity and lighter weight..
With Ed Wellburn designing the C7 you can bet it will be stunning as well. His people are doing a great job with all their new designs. I expect nothing less with the C7.
JMO
Melting Slicks
Joined: May 1999
Posts: 2,365
Likes: 0
From: Vancouver BC
Even the LS3 engines have great fuel economy...make the Vette lighter with Carbon Fibre and Aluminum (which is becoming a lot cheaper to mass produce) and do some engine tweaking and all will be fine...I don't want to see smaller V6 engines with turbos in Vettes....that's taking the spirit out of the car. It needs a big V8....that is part of it's appeal...otherwise it will just be another Z car or Hyundai Coupe...I certainly would not buy a V6 Vette....maybe a V8 Turbo 
....but the engine needs to remain a V8.
....but the engine needs to remain a V8.
Drifting
Joined: Feb 2002
Posts: 1,260
Likes: 0
From: Chapel Hill NC
You bet
"There is also a new development in the thickness of the hydroformed steel frame rails as they met up with other chassis structural points...giving greater rigidity and lighter weight.."
Take that one to the bank
Take that one to the bank
Pro
Joined: Dec 1999
Posts: 515
Likes: 0
From: Mississauga Ontario
All this talk about the upcoming C7 motorplant is getting me excited!!
I think the Corvette community will be pleasantly surprised with the new C7.
Ok, the young, lurking noob is going to make his prediction. lol
5.5 liter, direct injection. Still 400+ hp
It's a win/win. GM gets to make a smaller, more fuel efficient engine, while at the same time maintaining the current power outputs of the LS2/3.
So that renders moot the old theories of GM creating a smaller, lighter, Solstice-sized C7 with a weaker engine. Screw that weight ricer logic. :P
5.5 liter, direct injection. Still 400+ hp
It's a win/win. GM gets to make a smaller, more fuel efficient engine, while at the same time maintaining the current power outputs of the LS2/3.
So that renders moot the old theories of GM creating a smaller, lighter, Solstice-sized C7 with a weaker engine. Screw that weight ricer logic. :P
I think the Corvette community will be pleasantly surprised with the new C7.
Last edited by Blu Angel; Jan 23, 2010 at 04:56 PM.
Drifting
Joined: Oct 2009
Posts: 1,758
Likes: 105
From: Houston TX
Most consider C6 as a C5.5 since the underpinings of the cars being the same with changes to suspension, brakes and stiffness. The question here is.. Is the C7 an all new vette? Or yet another enhanced version of the C6's chassis and new skin??
There were leaps n bounds in advancement from C4 to C5... And the cars looked very distinctively different yet evolutionary.. I hope to see this change for the next generation!!
There were leaps n bounds in advancement from C4 to C5... And the cars looked very distinctively different yet evolutionary.. I hope to see this change for the next generation!!
3rd Gear
Joined: Jan 2010
Posts: 3
Likes: 0
Depends on what it's on. The company that builds the chassis the engine is used in usually supplies the filter and it may not be the same from one brand chassis to another.
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Ceramic Metal Halide
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Instructor
Joined: Feb 2009
Posts: 234
Likes: 0
From: Tuscaloosa AL
As most, I definitely expect to see DI. Possibly even VVT. As for the change to smaller displacement, so what? The C6 didn't use hidden headlamps (arguably a core spec in Corvette lore) and those seem to have grown on everyone. I haven't heard much opposition to those in quite some time now. Granted, I would like to see the new technology integrated into an engine with similar displacement to the current offerings, but I will not be disappointed in a 5.5L. GM has consistently increased power in the Vette for a LONG time now, and I don't expect that to change.
My prediction is similar to some of yours. A 5.5L V8 with DI and VVT with around 450hp (come on, the Mustang will have 412 by then
) for the base model. The weight will probably stay in the same ballpark, although the more prevalent use of lighter materials should allow plenty of room for refinements in the feel of the car. I think one of those refinements will be in interior quality/appearance. GM has taken way too much crap about that over the last few body styles and I feel it's time to shut the critics up.
Some people would argue the Z06 is on its way out, but I think the ZR1 is in more danger. I do not expect to see a C7 ZR1. The Z06 should have power outputs comparable to the LSA with the new technology integrated. What will be interesting to see is whether GM will start with a clean slate for the C7 engine or not. With the Z28 and already-announced LSA package due out in 2011 and the C7 scheduled for 2013, who knows. Perhaps they will introduce genV engine architecture in the Vette before it is put into use elsewhere, not unlike the LT1 and LS1. I would think we would see a more extended period of time with this transition, though.
My prediction is similar to some of yours. A 5.5L V8 with DI and VVT with around 450hp (come on, the Mustang will have 412 by then
) for the base model. The weight will probably stay in the same ballpark, although the more prevalent use of lighter materials should allow plenty of room for refinements in the feel of the car. I think one of those refinements will be in interior quality/appearance. GM has taken way too much crap about that over the last few body styles and I feel it's time to shut the critics up. Some people would argue the Z06 is on its way out, but I think the ZR1 is in more danger. I do not expect to see a C7 ZR1. The Z06 should have power outputs comparable to the LSA with the new technology integrated. What will be interesting to see is whether GM will start with a clean slate for the C7 engine or not. With the Z28 and already-announced LSA package due out in 2011 and the C7 scheduled for 2013, who knows. Perhaps they will introduce genV engine architecture in the Vette before it is put into use elsewhere, not unlike the LT1 and LS1. I would think we would see a more extended period of time with this transition, though.
Drifting
Joined: Feb 2002
Posts: 1,260
Likes: 0
From: Chapel Hill NC
5.5 liter V-8 details
"We'll be racing two factory-backed C6.Rs powered by a reduced displacement version of Chevrolet's latest LS7 V-8. The block comes right off the assembly line, but we've destroked and sleeved it from 7.0 liters to 5.5 lliters. . ."
Doug Fehan in April's Road and Track.
Doug Fehan in April's Road and Track.
Racer
Joined: Aug 2007
Posts: 305
Likes: 1
From: DRAYTON VALLEY ALBERTA
Pushrods have been winning GM titles for years. Why would you replace that. Cheeper to build and staying away from what everyone else is doing. There is no down side to push rods so why replace it.
