2017 Ford Mustang Shelby GT350R vs. 2017 Chevy Camaro ZL1

Kelley Blue Book pits the naturally aspirated Shelby GT350R, making roughly 100 horsepower per liter without a turbo or supercharger, against the supercharged Camaro ZL1 on both street and track. Viewers calling it one of the best Mustang-versus-Camaro comparisons ever filmed still can’t agree on a winner, with plenty admitting they’d happily own both. See which engineering philosophy — high-revving naturally aspirated power or supercharged torque — actually wins when both cars hit the same road.

Pick a side in the Mustang-versus-Camaro argument and someone in the comments will tell you that you’re wrong for the wrong reasons. Kelley Blue Book’s Micah Muzio and Zach Vlasuk stepped into that argument in 2017 with two of the most extreme versions either brand had ever built: the naturally aspirated Shelby GT350R and the supercharged Camaro ZL1. One relies on a screaming flat-plane-crank V8 that revs like nothing else in its class; the other leans on brute forced-induction power. Viewers who watched both cars pushed on street and track walked away calling it one of the best head-to-head comparisons ever filmed — and still couldn’t agree on a winner.

100 Horsepower Per Liter, No Turbo or Supercharger Required

What separates the GT350R from almost everything else in this comparison is how it makes its power. Commenters specifically highlighted its naturally aspirated flat-plane-crank V8 producing roughly 100 horsepower per liter of displacement without any forced induction — a figure that puts it in territory usually reserved for exotic European engines, not a factory Mustang. That kind of specific output from breathing alone requires aggressive cylinder head design and a redline that lets the engine rev far higher than a typical pushrod V8, which is exactly what gives the GT350R its distinctive, almost Ferrari-like exhaust note.

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The ZL1’s Supercharged Answer

The Camaro ZL1 takes the opposite engineering path, using a supercharger to force-feed a big-displacement V8 rather than chasing high-rpm naturally aspirated output. That approach trades some of the GT350R’s high-rpm drama for broader, more accessible torque across the rev range — a difference testers on street driving loops tend to notice immediately, since the ZL1 doesn’t need to be wound out to feel genuinely fast the way the GT350R does.

Street and Track — Why Both Environments Matter

Muzio and Vlasuk structured the comparison around both street and track driving specifically because these two cars behave differently depending on where you put them. A car that dominates a drag strip or a fast highway on-ramp doesn’t automatically feel best on a technical road course, and vice versa — factors like weight distribution, steering feel, and how power actually gets to the pavement matter far more on a track than a straight-line spec sheet comparison would suggest. Testing both environments is exactly why commenters called this one of the most thorough comparisons of its kind.

A Rivalry Commenters Refuse to Settle

What’s notable about the reaction to this video isn’t that people picked sides — it’s how many admitted they genuinely like both cars. One viewer said they felt like everyone in the comments only likes one or the other, while plenty of others said flatly that they wanted both in their garage. That kind of split reaction is rare for a Mustang-versus-Camaro comparison, where tribal loyalty usually dominates the discussion regardless of what the actual test results show.

Why This Generation of Both Cars Still Matters

The 2017 GT350R and ZL1 represent a specific high point in the modern muscle car horsepower wars, built during a stretch when both Ford and Chevy were willing to spend serious engineering resources on halo versions of their pony cars rather than treating them as afterthoughts. Neither car was built primarily to sell in high volumes — both existed to prove what each platform was capable of at its absolute limit, which is exactly the kind of factory ambition that makes cars like these desirable years after they’ve left production.

What a Modern Comparison Test Gets Right

Part of why this particular video holds up is the format itself: rather than relying purely on spec sheet numbers, KBB put both cars through the same real-world conditions and let the driving experience — not the horsepower figures alone — inform the conclusion. That approach matters more with cars this closely matched on paper, since the actual differences between a 100-hp-per-liter naturally aspirated engine and a supercharged big-displacement V8 show up far more clearly behind the wheel than they do on a comparison chart.

A Comparison Worth Revisiting Years Later

Nearly a decade after this video was filmed, both the GT350R and the ZL1 have become sought-after used-market performance cars in their own right, which makes revisiting this comparison more than just nostalgia — it’s a useful reference point for anyone shopping either car today. The rivalry it captures, between two completely different approaches to building the ultimate pony car, hasn’t gotten any less interesting with time.

KBB’s Long-Running ‘VS’ Comparison Series

This head-to-head comes from Kelley Blue Book’s recurring ‘VS’ series, a format built specifically around pitting two closely matched vehicles against each other on both spec sheet and real-world driving impressions, sponsored in this installment by Sonic Drive-In according to the video’s own opening — a sponsorship detail one commenter jokingly noted made the segment feel like a commercial break before the actual comparison began. Running a dedicated series like ‘VS’ rather than one-off comparison videos lets hosts Micah Muzio and Zach Vlasuk build a consistent format viewers already understand going in, which is part of why this particular episode drew comments calling it one of the best entries in the format’s history rather than just a good standalone video. It also means KBB had already built credibility with this exact kind of head-to-head test long before pitting the GT350R against the ZL1, giving viewers a reason to trust the driving impressions over a channel doing its first-ever comparison test. Viewers requesting a rematch with the standard GT350 instead of the R-package car, as one commenter did, is itself evidence of how engaged this particular audience is with the format’s mechanics — they’re not just watching for the verdict, they’re actively shaping which matchups KBB should run next. That kind of ongoing feedback loop between host and audience is part of why the ‘VS’ format has stuck around long enough to produce an episode people are still calling one of the best examples of the genre years after it aired, rather than fading into the churn of one-off comparison content that dominates most automotive channels.

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