Dyno Tested - 2014 SLP Panther Camaro Long-Term Road Test

2014 SLP Panther Camaro Long-Term Road Test

  • Full Review
  • Pricing & Specs
  • Road Tests
  • Comparison
  • Long-Term (11)

2014 SLP Panther Camaro: Dyno Tested

April 10, 2014

2014 SLP Panther Camaro

You can't miss it. Right there on our long-term 2014 SLP Panther Camaro's hood are one inch-tall letters smacking your ocular nerves with what lurks beneath: "600HP Supercharged". For good measure, it's printed on both sides of the hood bulge.

Challenge accepted. We rolled on down to MD Automotive's Dynojet chassis dyno to see if the bulge delivers on its promise.

2014 SLP Panther Camaro

To recap, the Panther's 6.2-liter LS3 lungs have been swollen by the SLP gang with an Eaton TVS 2300 blower, liquid-to-air intercooling, a reworked valvetrain that facilitates a higher rev limit, a cold-air intake and a bigger-bore exhaust. This power plant propelled the big coupe through the quarter mile in 12.5 seconds at 116.0 mph in our testing.

Here's what we measured at the wheels:

2014 SLP Panther Camaro

That's a suitably broad plateau of torque that, over a wide span of engine speed, barely deviates from its peak value of 449 lb-ft as measured at the wheels. It's a big, flexible power delivery that maintains its goods even as the 6,600-rpm fuel cut looms large. Power peaks at 6,000 rpm at 479 horsepower (again, as measured at the wheels).

2014 SLP Panther Camaro

It turns out we dyno-tested the 600-hp Panther on the very same day as the 604-hp CL65 AMG. Check out our dyno test of the CL65 here. It's an ideal situation: same day, same dyno, same operator, and roughly the same factory power ratings. If both cars' ratings are accurate, then we should expect similar peak power at the wheels.

Here's the overlay of the Panther and the CL65 AMG dyno results:

2014 SLP Panther Camaro

Both engines were subjected to numerous runs on the dyno. This is to allow the engines to fully acclimate their engine control systems to the 91-octane fuel in order to establish their stabilized outputs.

Putting aside the obvious differences in torque output and character of these two engines, we see a discrepancy in peak power. The CL65 churned out 528 hp to the Panther's 479, a difference of about fifty horsepower.

It could be argued that the CL65's power is underrated by the factory. Conversely, it could be countered that the Panther is fresher than the 60,000-mile German coupe, and that its manual gearbox saps less power than the Benz's slushbox, factors in its favor. Isn't this fun?

2014 SLP Panther Camaro

In any case, 50-ish horsepower is a large spread among two cars that both ostensibly make 600 hp (or thereabouts) at the engine. For sure, the Panther delivers its punch over an impressively wide rev band, even if its 600 horsepower appear to be smaller foals than those of the German. Factoring in driveline loss, its 600 horsepower claim appears a touch optimistic.

2014 SLP Panther Camaro

SLP tells us that the Panther's 600 horsepower designation is determined on their SuperFlow dyno using the 92 or 93 octane fuel common in their region (New Jersey). Certainly the craptacular 91 octane premium fuel indigenous to California is feeble stuff when it comes to supporting power. And since Edmunds is based in Los Angeles, 91 octane is what we feed our Panther.

Higher octane would raise the knock threshold, allowing for more ignition advance which unlocks more power (and reduces exhaust gas temperatures, making life easier for exhaust valves and seats).

That sound you hear is Oldham rolling out a drum of 100 octane for a repeat dyno test.

Jason Kavanagh, Engineering Editor @ 4,919 miles

2014 SLP Panther Camaro

2014 SLP Panther Camaro

2014 SLP Panther Camaro


  • Stop making excuses about crappy CA gas. Yeah it sux but the Benz ran on the same gas, and with 60k miles and a slush box still beat the tuner car like a gong. 50hp difference is huge.

  • joefrompa joefrompa Posts:

    550 crank hp, maybe. More like 530-540 crank hp. 1-2 octane is going to make a small hp difference, no doubt. Not that big.

  • s197gt s197gt Posts:

    why wouldn't slp underrate their output?! these kind of cars go to people who are very likely to see them on a dyno or dragstrip at some point and when they don't get the output/times they expect someone is gonna have to answer. their customers are paying too much not to get what they are expecting.

  • goaterguy goaterguy Posts:

    Have you guys dynoed a ZL1 for comparison purposes? That would be the easiest choice.

  • Isn't the common factor for driveline loss 20% for calculating hp-to-the-wheels? If so, that puts 479 wheel-hp on a dyno about 598 hp at the flywheel, no?

  • yellowbal yellowbal Posts:

    Wow look at the torque on the SL65. Smaller displacement but huge torques.

  • fordson1 fordson1 Posts:

    Not impressed. The LT Stingray is rated 460/465 and made 411/407. The 2011 Mustang GT was rated 412/390 and made 380/353. So the 'Vette and the GT made anywhere from 87.5% to almost 92% of their rated output. The Benz made almost 88% of rated hp and over 92% of rated torque. The SLP Camaro made just under 80% of rated hp and 81.5% of rated torque. Yes, Edmunds did dyno-test a ZL1 - on rated power of 580/556, it made 497/497 - or almost 86% and almost 89% of rated power and torque, respectively. And it did it with a TVS 1900 blower vs the larger TVS 2300 the SLP uses. And this was all done on the same dyno. And I don't recall any ZL1 tests in which parts were falling off the car.

  • ok, to sum up. The zl1 is better built and makes more powah than the slp. Soooooo... what is the point of the slp?

  • flapsmcgee flapsmcgee Posts:

    The ZL1 made 497hp/497lbft on the same dyno with a lower rating at the crank. That is pretty lame for the SLP. And the Mercedes in this test was tested in 3rd gear which has a 1.41:1 ratio. It was supposed to be tested in 4th gear which has a 1:1 ratio but the top speed limiter kicked in. The Mercedes would have had even higher numbers in 4th gear.

Leave a Comment

Past Long-Term Road Tests

Have a question? We're here to help!
Chat online with us
Email us at help@edmunds.com
*Available daily 8AM-5PM Pacific
Call us at 855-782-4711
Text us at ED411