[Lemosine]

If I remember I read somewhere that GM is planning on making their entire line up Hybrids in a few years. Im sure they will follow the super car trend going Hybrid. Example 400 HP gas engine and a 200 hp electric engine. I heard rumors that the C8 will come like that as AWD. Rear tires gas engine, front tires electric... will be a monster.

[01pewterz28]

At some point consumers will not have a choice the manufactures will go all V6/V4 or Electric and we will all have to adapt. At some point I would expect w/in the next 10-15 years the V8's will be gone forever. Replaced by a 600+ HP 4-banger. Our only option will be our old used V8's. Might need to plan to stock up on a grate motor to stash in the garage as a replacement for a day when ours need to be replaced.

[danhr]

Originally Posted by Soleil

The V8 will not die but I guess they will be smaller. 4.2 or 4.4L with 2 or even 4 turbocharger like BMW Mercedes and Audi. The 5.0 or 6.2 L motor is just aged and out or tolerance of the people/ government

The past 30 years kinda says otherwise.... engines have been getting bigger and bigger, with better mileage than their smaller counter parts.

[MackSteelPrivateEye]

Originally Posted by Soleil

The V8 will not die but I guess they will be smaller. 4.2 or 4.4L with 2 or even 4 turbocharger like BMW Mercedes and Audi. The 5.0 or 6.2 L motor is just aged and out or tolerance of the people/ government

Why go smaller? the 6.2 MPG is already on par with a 4.2-5.0 delivers. Plus puts out more power, and physically the same size or smaller.

[ChevyRules]

Originally Posted by MackSteelPrivateEye

Why go smaller? the 6.2 MPG is already on par with a 4.2-5.0 delivers. Plus puts out more power, and physically the same size or smaller.

I think the issue is becoming more emissions than fuel economy. The reason why the Z06( and extension ZL1) didn't have a NA V8 is because they couldn't get the engine to pass emissions for the power they wanted.



Not sure which it is at the moment( OHV or displacement), but OHV/big displacement has poor cold start emissions. GM is using tricks to improve it( like the double spray of fuel into the cylinders), but there is only so much they can do.

[MackSteelPrivateEye]

Originally Posted by Soleil

The V8 will not die but I guess they will be smaller. 4.2 or 4.4L with 2 or even 4 turbocharger like BMW Mercedes and Audi. The 5.0 or 6.2 L motor is just aged and out or tolerance of the people/ government

Why go smaller? the 6.2 MPG is already on par with a 4.2-5.0 delivers. Plus puts out more power, and physically the same size or smaller.

[Soleil]

I was thinking about the engine displacement and not the consumption. BMW stopped production of the their V8 same Mercedes and Porsche stopped the production of the 911 for Germany as they don’t pass the new emissions regulations which will be effective as of 1st of September. Now They need a particle filter and this need some time to develop and built. First comes the smaller engines and than the Performance engines.

[shaffe]

Originally Posted by ChevyRules

I think the issue is becoming more emissions than fuel economy. The reason why the Z06( and extension ZL1) didn't have a NA V8 is because they couldn't get the engine to pass emissions for the power they wanted.



Not sure which it is at the moment( OHV or displacement), but OHV/big displacement has poor cold start emissions. GM is using tricks to improve it( like the double spray of fuel into the cylinders), but there is only so much they can do.

From what I understand it's both. Someone smarter than me can explain better but in laymans terms, basically to get more power N/A you go bigger displacement. Big displacement engines have poor cold start emissions, which like you mentioned is why the Z06 has an LT4 and not a big 7.0.

I think the V-8 will live on, but I think big displacement V-8s might slowly fade away to smaller boosted ones.

[ChevyRules]

Originally Posted by shaffe

From what I understand it's both. Someone smarter than me can explain better but in laymans terms, basically to get more power N/A you go bigger displacement. Big displacement engines have poor cold start emissions, which like you mentioned is why the Z06 has an LT4 and not a big 7.0.

But is it more of a displacement thing than the architecture? Obviously in an OHV setup you're using displacement to get the power vs spinning the engine faster in a DOHC setup so therefore an OHV setup would have worse cold start emissions simply due to the method of producing power.



But take a 6.2 liter OHV vs 6.2 liter DOHC, would cold start emissions be better on the DOHC or about equal since the emissions issue is more of a displacement factor than architecture?

[SSJ455]

The V8 won't have many more years left. With turbo 4s and 6s the big honking V8 will be a thing of the past.

This was said in the early 70s and it seems to be getting closer to becoming a reality.

My Regal GS makes about 320 hp with a tune and it moves but the turbo lag sucks and until the turbo spools up it is a 4 cylinder and pretty slow. I had a 2011 Camaro with the V6 which I wished was in my Regal. If GM slapped a turbo on that my Buick would be much faster off the line. Both got pretty good mileage as well but as we know nothing beats the torque of a V8

[shaffe]

Originally Posted by ChevyRules

But is it more of a displacement thing than the architecture? Obviously in an OHV setup you're using displacement to get the power vs spinning the engine faster in a DOHC setup so therefore an OHV setup would have worse cold start emissions simply due to the method of producing power.



But take a 6.2 liter OHV vs 6.2 liter DOHC, would cold start emissions be better on the DOHC or about equal since the emissions issue is more of a displacement factor than architecture?

I would assume at same displacement it would be the same issue on the cold start emissions.

But like you mentioned it's different ways of getting the power. Companies can make similar peak power with "less" displacement in a DOHC design compared to a OHV, despite the DOHC being physically larger lol.

[Martinjlm]

Originally Posted by SSJ455

The V8 won't have many more years left. With turbo 4s and 6s the big honking V8 will be a thing of the past.

This was said in the early 70s and it seems to be getting closer to becoming a reality.

My Regal GS makes about 320 hp with a tune and it moves but the turbo lag sucks and until the turbo spools up it is a 4 cylinder and pretty slow. I had a 2011 Camaro with the V6 which I wished was in my Regal. If GM slapped a turbo on that my Buick would be much faster off the line. Both got pretty good mileage as well but as we know nothing beats the torque of a V8

A McLaren V8 is 3.8L. V8 engines are likely to remain, just a lot smaller and spinning a lot faster. And a lot more expensive. The other alternative is that they are smaller, spinning a bit faster, and supplemented by electric motors and/or electric superchargers. Nothing beats the torque of a V8 EXCEPT the torque of an electric motor. Or two.

Originally Posted by shaffe

I would assume at same displacement it would be the same issue on the cold start emissions.

But like you mentioned it's different ways of getting the power. Companies can make similar peak power with "less" displacement in a DOHC design compared to a OHV, despite the DOHC being physically larger lol.

I still chuckle at how many people don’t get this. I think you (shaffe)might remember the thread at M6G where someone pointed out that Mustang only needs 5.0L to do what Camaro needs 6.2L to do. I pointed out that the displacement is the size of the holes, not the size of the metal, and that the 5.0 covers approximately the same physical footprint as the 6.2 and that the 6.2L might actually weigh less (4 cams vs 1, additional belts and pulleys). Their response was...the 5.0 weighs about 10 lbs less. Either way, so much for the size discussion.

[Lazerbrainz2k3]

Originally Posted by Rock-It Man

The only advantage of the OHV engine is that it is smaller than a DOHC engine of the same displacement.

Or, in the case of the LT1 vs. Coyote, a DOHC engine with 80% of the OHV's displacement. Basically the same fuel economy/emissions, too.

Comparing apples to apples (torque-y naturally-aspirated American V8s, not exotic European forced induction variants in cars 4x the price), to date there's been little difference to make one really better than the other. Historically there's not been enough of a difference to make it economical to ditch the 350+ cu in OHV V8 architecture for a low-300's cu in DOHC V8 when the competition's offering isn't producing a measurable benefit in any metric (their fanboys' chattering about "old technology" not being a real metric).

[ChevyRules]

Originally Posted by Martinjlm

I still chuckle at how many people don’t get this. I think you (shaffe)might remember the thread at M6G where someone pointed out that Mustang only needs 5.0L to do what Camaro needs 6.2L to do. I pointed out that the displacement is the size of the holes, not the size of the metal, and that the 5.0 covers approximately the same physical footprint as the 6.2 and that the 6.2L might actually weigh less (4 cams vs 1, additional belts and pulleys). Their response was...the 5.0 weighs about 10 lbs less. Either way, so much for the size discussion.

All you have to do is look at under the hood pictures of the 5.0 vs the LT1. The 5.0 looks huge while the LT1 is nice and compact.



But then they will change the argument to they like the fact the Coyote looks bigger because of some kind of manhood/power relationship.