More C8R specs DOHC Flat Plane Crank.
 

https://www.yahoo.com/finance/news/c...185500425.html

I saw the base c8 this past weekend on the streets of Chicago and I must admit the eye candy appeal wasn't there. Maybe it needs to grow on me.

Re: More C8R specs DOHC Flat Plane Crank.
 

Great read!


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Re: More C8R specs DOHC Flat Plane Crank.
 

Most of the current articles on this are
making a bigger deal out of the flat plane crank
than DOHC???

Re: More C8R specs DOHC Flat Plane Crank.
 

Yes the flat plane crank seems to be well discussed.


The RPM limits are much higher but to my understanding at a cost to overall reliability?

Has anyone seen the latest Hovemann Hillclimb video?

9000rpm LT5 sounds amazing with the flat plane crank!

https://www.youtube.com/watch?v=KiTBRyGUy0o

Re: More C8R specs DOHC Flat Plane Crank.
 

The LT5 in that Opel does not have a flat crank. All flat crank V8s sound like four-cylinders and the difference is obvious, unless, of course, you're deaf. The reason the sound is different is firing impulses are coming every 180° rather than every 90°. That's the same as a 4-cyl.

Re: More C8R specs DOHC Flat Plane Crank.
 

Hib, you forgot the other half of the v8.

An example of a flat plane firing order is
14527638
Or two four cylinders firing
1342

Graham

Re: More C8R specs DOHC Flat Plane Crank.
 

More C8R specs DOHC Flat Plane Crank.
 

GM is sandbagging on the RWH on the base C8....

The first dyno test

https://www.motortrend.com/news/2020...c8-power-dyno/


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Re: More C8R specs DOHC Flat Plane Crank.
 

Ooops, yeah, I got that, but the exhaust noise sounds like a four.

That LT5-powered Opel sounds like a Cup Car to me, ie: a 90° crank.

Re: More C8R specs DOHC Flat Plane Crank.
 

I kinda doubt GM is sandbagging. I think MT's dyno testing is screwy. Either way, I have a meeting with Jordan Lee in Michigan week after next and that's on my list of stuff to ask him about.