Chevy not giving up on the V8

[f6john]

The recently announced 2023 Corvette Z06 will have an all new 5.5 liter Dohc V8 with a flat plane crank rated at 670 hp. I don't think I'll ever own one but I enjoy seeing the advances to the platform. This will be their first in house foray into the four cam V8 since the 1990's LT5 4 cam motor that GM partnered with Mercury Marine in the design and development.

[old2soon]

      I'd read where G M spent near 2 years perfecting the exhaust note. Even on my cheesy external computer speakers it sounds NASTY!  RIDE SAFE.

[Patrick]

Boy, I haven't been keeping up !  A flat crank 8 !  That thing'll have to be a screamer.

[Westernbiker]

Boy, I haven't been keeping up !  A flat crank 8 !  That thing'll have to be a screamer.

It is. They are saying 8500-8600 RPM redline. Can't imagine.

[f6john]

Word is from the engineering team, it is a C8.R racecar for the street.

[hal47]

What does flat plane crank mean,never heard a crank described in those terms.

[Mooskee]

What does flat plane crank mean,never heard a crank described in those terms.

I was gonna tryto rxplain that, but thendecided tosee if I could find an article on it.. Check this out:


https://www-motortrend-com.cdn.ampproject.org/v/s/www.motortrend.com/how-to/difference-between-cross-plane-and-flat-plane-cranks/amp/?amp_js_v=a6&amp_gsa=1&usqp=mq331AQKKAFQArABIIACAw%3D%3D#aoh=16354819084779&referrer=https%3A%2F%2Fwww.google.com&amp_tf=From%20%251%24s&ampshare=https%3A%2F%2Fwww.motortrend.com%2Fhow-to%2Fdifference-between-cross-plane-and-flat-plane-cranks%2F

[hubcapsc]

What does flat plane crank mean,never heard a crank described in those terms.

I was gonna tryto rxplain that, but thendecided tosee if I could find an article on it.. Check this out:


https://www-motortrend-com.cdn.ampproject.org/v/s/www.motortrend.com/how-to/difference-between-cross-plane-and-flat-plane-cranks/amp/?amp_js_v=a6&amp_gsa=1&usqp=mq331AQKKAFQArABIIACAw%3D%3D#aoh=16354819084779&referrer=https%3A%2F%2Fwww.google.com&amp_tf=From%20%251%24s&ampshare=https%3A%2F%2Fwww.motortrend.com%2Fhow-to%2Fdifference-between-cross-plane-and-flat-plane-cranks%2F

Good question, Hal! Thanks for the good explanation Mooskee  ...

-Mike

[Farside]

  I learned something. I will review again to make sure I understood it. 
Thanks for the post and link. Big Corvete fan. 

[f6john]

Also worthy of noting, it's 670 hp naturally aspirated, no turbos, no super chargers.

[cookiedough]

Also worthy of noting, it's 670 hp naturally aspirated, no turbos, no super chargers.

and that is the way it should be.   

try finding many new cars not made lately with a turbo or two, good luck with that.  I am not sold on turbos and smaller, higher revving and higher compression, engines for long term reliability.

[Patrick]

The Ford Coyote is a natural engine, no pressure to the intake, and has been here for a decade.

But, has a 'conventional' crank and smaller in size [ 302, 5.0 ] and  up to a 7G rev limit. It is less in HP than this new Chevy.

[cookiedough]

this V8 from Chevy seems even better 10.4L

https://www.thedrive.com/news/42786/chevy-unveils-new-10-4-l-1004-hp-v8-crate-engine-its-most-powerful-ever

I would like to put this in my truck!  I bet 10 mpg tops though it will pass everything but a gas station.

Really think all these twin turbo small displacement 4 and 6 cylinder engines in almost all vehicles nowadays is being done to meet EPA govt. fuel economy regulations.  Yah, is nice to squeeze out 3-4 more mpg tops per engine, but is it worth it if the engine lasts near 1/2 as long as a traditional V8?

[f6john]

The Ford Coyote is a natural engine, no pressure to the intake, and has been here for a decade.

But, has a 'conventional' crank and smaller in size [ 302, 5.0 ] and  up to a 7G rev limit. It is less in HP than this new Chevy.

Ford has a version of Coyote engine that has a flat plane crank too. I'd have to do a little research to say which version of Mustang they put them in.

Just checked, Mustang GT 350. They are few and far between but are very capable track cars too.

[f6john]

this V8 from Chevy seems even better 10.4L

https://www.thedrive.com/news/42786/chevy-unveils-new-10-4-l-1004-hp-v8-crate-engine-its-most-powerful-ever

I would like to put this in my truck!  I bet 10 mpg tops though it will pass everything but a gas station.

Really think all these twin turbo small displacement 4 and 6 cylinder engines in almost all vehicles nowadays is being done to meet EPA govt. fuel economy regulations.  Yah, is nice to squeeze out 3-4 more mpg tops per engine, but is it worth it if the engine lasts near 1/2 as long as a traditional V8?

10 mpg going downhill with the engine turned off

[old2soon]

this V8 from Chevy seems even better 10.4L

https://www.thedrive.com/news/42786/chevy-unveils-new-10-4-l-1004-hp-v8-crate-engine-its-most-powerful-ever

I would like to put this in my truck!  I bet 10 mpg tops though it will pass everything but a gas station.

Really think all these twin turbo small displacement 4 and 6 cylinder engines in almost all vehicles nowadays is being done to meet EPA govt. fuel economy regulations.  Yah, is nice to squeeze out 3-4 more mpg tops per engine, but is it worth it if the engine lasts near 1/2 as long as a traditional V8?

10 mpg going downhill with the engine turned off

          AND a purty good tail wind! I've owned a couple G M big block V 8s. Course this was BEFORE the gas "crisis" in the70s and well I kept a couple of em when I moved to Texas in 78. What they are accomplishing these days with computer tuning intake and exhaust curves pulse feeds pulse exhausts camming and jetting in my race days were considered black arts!  BUT at the Very LEAST I can keep on dreamin!  RIDE SAFE.

[Patrick]

The Ford Coyote is a natural engine, no pressure to the intake, and has been here for a decade.

But, has a 'conventional' crank and smaller in size [ 302, 5.0 ] and  up to a 7G rev limit. It is less in HP than this new Chevy.

Ford has a version of Coyote engine that has a flat plane crank too. I'd have to do a little research to say which version of Mustang they put them in.

Just checked, Mustang GT 350. They are few and far between but are very capable track cars too.

Ya know what ? You're right. Boy, I really haven't been keeping up.
That 'Voodoo' engine has been around for awhile too. 8250 rpm redline, impressive.

[hal47]

Guess i haven't kept up with time,in my day we put 400 cranks in 350 engines to make them 388,I had one in my corvette.

[Patrick]

Yep, the 383 Chevy stroker has been around awhile and seems to be timeless, a good motor. Its a good combination that just plain works, kinda like the 301/302.

[shortleg]

  There are some great short movies on youtube with some great info about them

[2step]

I'm anxious to see how it holds up. The C7 vette Z06 6.2 Supercharged  650Hp  650 Torque  25 mpg all day and better. Dont know if the C8 Z06 can match that.

[f6john]

I'm anxious to see how it holds up. The C7 vette Z06 6.2 Supercharged  650Hp  650 Torque  25 mpg all day and better. Dont know if the C8 Z06 can match that.

The C8 is definitely a different animal. The C6 Z06 has had its share of teething problems in the engine compartment. After the latest wreck that made the news, C8 running 150 mph+ hitting another car and killing its occupant and her dog, I have been waiting for the woke to demand Chevy stop production. Driver was double the legal limit of alcohol in his blood but you just know it has to be the carmakers fault.