As we learned from our day spent punishing its sticky Pirelli Trofeo R tires and Brembo carbon ceramic brakes, the 2014 Camaro Z/28 leaves the factory ready to take on the some world’s best sports and supercars. We surely weren’t left wanting more performance while we were behind the wheel, but it’s apparent some of the first 500 customers of the ‘Z’ wanted a bit more punch from their new pony car.
We found this thread started by a Camaro Z/28 owner on the Camaro 5 forums, which was simply titled “Modified our Z/28.” The user drove the car home from the dealer on May 22nd and immediately started modifying its 505 horsepower LS7 engine after some baseline dyno pulls. Some of the changes included Lingenfelter LS7 cylinder heads, Manley intake valves and an LPE camshaft. They also slapped on the timing chain from a C5-R for improved durability along with some American Racing longtube headers.
Even though it was just some fairly basic engine tuning, these changes paid dividends in the power department. The baseline dyno pull indicated the car was producing 457 horsepower and 444 lb-ft of torque at the rear wheels. After the modifications, the output jumped by 86 horsepower and 59 lb-ft of torque to 543 horsepower and 503 lb-ft of torque.
We’re glad the tuner, Davenport Motorsports, decided to go the naturally aspirated route for the Z/28 instead of supercharging it. The Z/28 is essentially a road-going racecar, and N/A engines typically hold up against track abuse a little better than boosted ones. That said, it’s only a matter of time before someone slaps a blower on this beast.