overst33r

Very stout engine. For those that don't have the time to read, the bump in the dyno isn't due to VVT like I initially thought, it's due to the exhaust valves opening according to Edmunds. http://www.edmunds.com/car-reviews/t...dyno-test.html



Just for sh!ts and giggles

deepbluejh

If this is the same dyno used by the old Inside Line (also edmonds), then it has always read high. Every car they've ever tested put out higher numbers than you think it should. People who aren't familiar with their testing are prone to think "Wow, strong engine!" while what would be more accurate is "wow, optimistic dyno!"

Regardless, I think the new Vette engine is probably rated appropriately - that is not too high and not too low.

And as a side note, that torque curve is impressively flat.

overst33r

Error can be as high as 5-10%. You're right, most people don't get that.
Edmunds has used this dyno for years now. It's good to compare the numbers to their other tests. You can't really compare a dyno vs a dyno.

Elistan

Yep. For example, on the same dyno (albeit different days) Edmunds tested the 272 hp rated ATS at 239 hp (seems reasonable) and the 240 hp rated 328i at 240 hp (quite underrated, it seems.) That's a meaningful comparison.

So it seems to me that one could draw some legit conclusions by comparing the C7's 411 hp to the Viper's 558 to the M5's 514 hp, etc.

ConanO'Brien

that torque curve looks similar to the chart in my road and track...assuming the chart i have is chevrolet's numbers at the flywheel?

aklucsarits

VTEC kicks in at 3850rpm.

Andrew