New Chevy Corvette set for Jan. 13 debut - ZR-1 Net Registry Forums

mike100 · 10-18-2012

Quote:

Details on the new small block V8 are set to be released on Oct. 24.

Probably this may be the most interesting part of the new car and depending on features and tech, will help me decide if the C7 is something I would even be interested in hurting myself financially for.

jimmac28 · 10-18-2012

Quote:

Originally Posted by mike100

Probably this may be the most interesting part of the new car and depending on features and tech, will help me decide if the C7 is something I would even be interested in hurting myself financially for.

If it was 4 cam 32 valves we probably would have heard something by now. But you never know.

XfireZ51 · 10-18-2012

Quote:

Originally Posted by jimmac28

If it was 4 cam 32 valves we probably would have heard something by now. But you never know.

Jim,

Don't forget. The powerplant needs to be of a design that can be used in trucks and other platforms.

tomtom72 · 10-22-2012

Quote:

Originally Posted by XfireZ51

Jim,

Don't forget. The powerplant needs to be of a design that can be used in trucks and other platforms.

I thought Ford uses the modular motor in their pick-up line, no?

Also, not to be a zit on the butt of progress, but GM already makes DOHC 4V motors in 4 and 6 cyls, so what's the big leap of process to go to a V8?

I realize it's more parts and that costs more money.

Tom

XfireZ51 · 10-22-2012

Tom,

The DOHC architecture is more expensive to build. I think it's more a question of profitability and not engineering. Then there's the marketing aspect to differentiating your product on the basis torque or ease of maintenance.

DaveK · 10-22-2012

Since the C5 all the technology in the vette has been brought in because it was wanted for the truck division or other cars. To me they've ripped the heart out of it.

A vette with a truck engine in it? Really? Yeah I've heard all that sh-tuff about economics

but legendary sports cars aren't built by bean counters - ask Dave McLellan.

JMO

Dave

tomtom72 · 10-22-2012

Dom, I am sure DOHC is more expensive, but then how does Ford make it work from the cost aspect? Or do they just get the accountants to go along with "this is a better idea even though it's more money to produce." Okay, I have a lot of sour grapes toward the BOD at GM! They forced my hero to retire, JMHO, for the sin of thinking waaaay outside the box!

Back in the old days a sb chevy had a plastic liner on the cam gear for teeth. They broke at the first really cold temps after 40k miles usually. The truck motors used to get a steel gear, and they just would wear out eventually I guess. I've never seen one fail, but I'm sure there was a point at which it would wear out. My Cobalt uses a 2.4 DOHC/4V 4 cyl with chains...or at least I think that's what I saw in the FSM. I do less maintenance to that motor than I do to my LT5! I have 35k on the OE plugs and have yet to see a drop in gas mileage. The Tech told me 50k on the plugs or if a coil fails, which ever comes first.

Dave, not to be a smart a$$....but vettes always used truck parts, motors especially. Among the blocks available to choose from, the Heavy Duty truck block 350 with the casting I. D. # ending in "010" was the one you looked for. As a cost cutting measure from 73 onward they used the medium duty truck block. The 010 block told you that at least if the vette you were looking at had the right block anyway, or if it was a cheap & quick fix for a blown motor. The 010 blocks were 25 and 50 lbs heavier ( respectively ) than a Med duty or light duty block and it was in the cam and main webs mostly to counter stress that payload would cause. That's one of the reasons truck blocks were prized by the junk yard shoppers looking to build a stout sb. for spirited use.

You'd be surprised to learn how many "borrowed" part there were in a C2 & C3 while they were at the St. Louis plant! LOL

Tom

mike100 · 10-18-2012

Quote:

Originally Posted by jimmac28

If it was 4 cam 32 valves we probably would have heard something by now. But you never know.

I know it will still be a 2 valve push rod design, but what I'm interested in is if they licensed the cam-in-cam VVT technology from Chrysler (as used in the 600hp Viper). Cam phasing (the whole cam) won't be enough. Everybody else has separate VVT for exh. and int. and it really makes for some area under the torque curve.

DI and displacement-on-demand wouldn't surprise me.

10-22-2012	#5
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,686	Re: New Chevy Corvette set for Jan. 13 debut Tom, The DOHC architecture is more expensive to build. I think it's more a question of profitability and not engineering. Then there's the marketing aspect to differentiating your product on the basis torque or ease of maintenance.

10-22-2012	#6
DaveK Join Date: Jul 2004 Location: Sudbury, Ontario. Canada Posts: 1,537	Re: New Chevy Corvette set for Jan. 13 debut Since the C5 all the technology in the vette has been brought in because it was wanted for the truck division or other cars. To me they've ripped the heart out of it. A vette with a truck engine in it? Really? Yeah I've heard all that sh-tuff about economics but legendary sports cars aren't built by bean counters - ask Dave McLellan. JMO Dave __________________ 1991 #1516 Black/Black davidmkelly.com Author of fast-paced, sci-fi thrillers.

10-22-2012	#7
tomtom72 Join Date: Dec 2004 Location: Jacksonville, FL USA Posts: 4,609	Re: New Chevy Corvette set for Jan. 13 debut Dom, I am sure DOHC is more expensive, but then how does Ford make it work from the cost aspect? Or do they just get the accountants to go along with "this is a better idea even though it's more money to produce." Okay, I have a lot of sour grapes toward the BOD at GM! They forced my hero to retire, JMHO, for the sin of thinking waaaay outside the box! Back in the old days a sb chevy had a plastic liner on the cam gear for teeth. They broke at the first really cold temps after 40k miles usually. The truck motors used to get a steel gear, and they just would wear out eventually I guess. I've never seen one fail, but I'm sure there was a point at which it would wear out. My Cobalt uses a 2.4 DOHC/4V 4 cyl with chains...or at least I think that's what I saw in the FSM. I do less maintenance to that motor than I do to my LT5! I have 35k on the OE plugs and have yet to see a drop in gas mileage. The Tech told me 50k on the plugs or if a coil fails, which ever comes first. Dave, not to be a smart a$$....but vettes always used truck parts, motors especially. Among the blocks available to choose from, the Heavy Duty truck block 350 with the casting I. D. # ending in "010" was the one you looked for. As a cost cutting measure from 73 onward they used the medium duty truck block. The 010 block told you that at least if the vette you were looking at had the right block anyway, or if it was a cheap & quick fix for a blown motor. The 010 blocks were 25 and 50 lbs heavier ( respectively ) than a Med duty or light duty block and it was in the cam and main webs mostly to counter stress that payload would cause. That's one of the reasons truck blocks were prized by the junk yard shoppers looking to build a stout sb. for spirited use. You'd be surprised to learn how many "borrowed" part there were in a C2 & C3 while they were at the St. Louis plant! LOL Tom __________________ 1990 ZR-1, Black/grey, #2233, stock. ZR-1 Net Reg Founding Member #316 & NCM member Last edited by tomtom72; 10-22-2012 at 11:25 AM.