[VIDEO] The C8.R Flat-Plane Crank V8 Developed a Misfire Which Made it Sound Even More Badass


[VIDEO] The C8.R Flat-Plane Crank V8 Developed a Misfire Which Made it Sound Even More Badass

Photo Credit: Richard Prince for Corvette Racing

Last weekend the Corvette C8.Rs were in Central Florida for the Mobil 1 Twelve Hours of Sebring and it ended up being a down day for both cars.

The No. 3 C8.R led throughout the race until the very end when it was knocked out of contention by the No. 25 BWM M8. Meanwhile, the day started bad for the No. 4 Corvette C8.R which had an electrical issue that caused them to fall a few laps behind early and they never recovered. Corvette Racing driver Tommy Milner said afterward “I felt something wrong pretty much at the start and we were low on power. We drove the entire 12 hours like that.

Whatever the issue was, it caused the Corvette’s 5.5L flat-plane crank engine to misfire which then gave it an entirely different sound as it went around the track. Lanky Turtle captured several drive-bys of the wounded Corvette racer and comments in the title that the misfire “sounds more badass!” It’s no GT1 or C7.R, but it does have a nice aural buzz to it.

From Lanky Turtle via YouTube:

The #4 Corvette C8.R suffered an engine issue early in the 12 Hours of Sebring but was still able to complete the race.

Lanky Turtle / YouTube

Corvette Racing at Sebring: What Might Have Been
Corvette Racing at Sebring: Garcia Leads Corvette 1-2 in GTLM Qualifying
Corvette Racing at Sebring: Special Mobil 1 Livery for 12 Hours



  1. Badass? Sounds more like an engine that’s not firing on all 8 cylinders which I already knew about after GM announced it had an electrical problem with the #4 car.

    The energy from the misfire would have better been used in producing more power to win the race.

  2. I don’t know whether the team couldn’t figure out how to fix the problem, OR, didn’t want to take the time during the race to fix the problem, although they knew pretty early in the race they’d be out of the money at the end. Unless it was a deep internal problem, I’d have thought they’d want to fix it so they could test their fix at the track – what else were they going to do for 12 hours? You can only clean tools so much.

  3. The only cars that sounded worse were Lexus. It sounded like it had an exhaust leak for 12 hours. Definitely odd they couldn’t ID it, or if they did they may have known the time it would take to fix it would cost more time / laps than than the lost power. They ended up 3 laps down, only +/ – 6 minutes, the fix could’ve cost way more time than that. Odds of finishing on the podium with only 3 teams / 5 cars were still in their favor. Who are we to second guess the winningest team in IMSA GTLM. Even with all the driver & management changes, the goal is the same. : )

  4. Flat planes just aren’t sexy to me. I’m such an old school pushrod V8 guy. Give me an SB2 or nasty LS7 any day of the week over a flat plane.

  5. Yeah it was sounding badass til it coasted to the side of the road. Ford has had nothing but trouble with it. Why is GM even bothering ? Seems to be a troublesome design.

Comments are closed.