The Redeye is faster than a C8 both from a dig and from a roll... assuming said dig race is a 1/4 mile. The Redeye will top out a C8 handily. From a roll, it would be no different than racing a Mustang GT. Granted, I had more than 1 Mustang GT beat my C8 from a roll, so that's not saying much. They have a LOT of aero drag and about the same HP as a newer stock Mustang GT.
On paper, the C8 pulls a 1/4 mi around 11 seconds. The Redeye is a good mid to low 10. On the street, the C8 will beat the Redeye to the 1/8 mile marker, but the Redeye should be already catching up. It depends on how big the big end is as to who wins. I can say definitively that there is no situation where a C8 gaps a Redeye from a roll. It might shoot ahead briefly, but in 2-3 seconds it'll be reeled in and passed.
You guys might remember me saying how the C8 hits a brick wall at 100mph. That's not a joke. It pulls like a champ from 0-80, but the aero drag is unreal in that car. It's painfully slow above 120. My Redeye can go from 40 - 100 quicker than my C8 could go from 70-100. A C8 Z06 might be a different story, but it's still got all that aero drag. It might be interesting to see a 40+ roll vs a C8 Z06, but I'd still put money on the Redeye.
In summary, a C8 can't beat a Hellcat or a Redeye from a roll without some serious mods. Most C8 owners that actually drive their car know full well that they're a dog in a roll race. If someone is picking on your Hellcat on the interstate in a C8, they're a noob/moron. I did it more than once, so I know... but a bone stock C8 vs. a bone stock Mustang GT from a 60 roll = Mustang wins every time. From a dig though, C8 kills the Mustang, only because it pulls so far ahead, they can't catch up unless you're running a full half mile. Even plain old Hellcats chew up Mustangs and spit them out.