Two notable Corvette tuners have just released power upgrades for the 2015 Chevrolet Corvette Z06 that take power north of the 700-hp mark. Callaway Cars Inc. and Lingenfelter Performance Engineering each take a different route to boost the new supercharged Z06’s peak numbers.
Callaway Cars Inc.: 757 hp and 777 lb-ft
Like the kit for the base Chevrolet Corvette Stingray, Callaway’s upgrade kit for the 2015 Chevrolet Corvette Z06 includes a larger supercharger. Callaway replaces the stock 1,740-cc TVS supercharger with a 32-percent larger 2,300-cc TVS supercharger. Supporting hardware includes Callaway’s triple-element intercooler for cooler intake temps. Additionally, the supercharger housing protrudes through the hood and adds convective cooling via the ambient airflow. The kit also includes a redesigned intake manifold for better cooling and increased airflow. A 10-rib drive pulley system is said to prevent belt-slippage. Callaway says the upgrade is good for 757 hp and 777 lb-ft of torque.
Other bits include a Callaway supercharger hood surround, carbon fiber engine mid-covers, high-flow air intake system, embroidered floor mats, anodized aluminum door sill panels, exterior and interior badging, underhood build plaque with VIN, Callaway key fobs, and an Authenticity Documentation Package. The kit is covered by Callaway’s 3-year/36,000-mile limited warranty. Callaway cars can be serviced by any GM dealer in the U.S.
Optional Callaway pieces include a short-throw shifter, Sport Exhaust with Double-D Tips, embroidered car cover, and National Corvette Museum Delivery. Additionally, the basic warranty can be upgraded to a 5-year/60,000-mile Powertrain Service Contract. The Callaway Corvette Z06 Package is priced at $16,995.
Lingenfelter Performance Engineering: 720 hp and 730 lb-ft
Where the Callaway kit includes a new supercharger and intercooler system, the Lingenfelter upgrade adds new parts to the existing system. The kit includes a Lingenfelter LT1/LT4 dry sump damper, 9.2-inch supercharger drive pulley, new supercharger drive belt, and 100-mm idler pulley kit. Those bits are good for a 15-percent overdrive of the stock supercharger. Other performance-enhancing bits include a high-flow air filter, 170-degree thermostat, GM crankshaft bolt, and a handheld programmer with a Lingenfelter tune.
The kit also includes professional installation as well as before and after chassis dyno tuning with dyno graphs and video documentation provided on a USB drive. Cosmetic bits include chrome Lingenfelter fender badges, interior badge, and personalized stainless engine badge. Priced at $3,995, the kit comes with a 12-month/12,000-mile warranty on the components. All told, the Lingenfelter kit increases the 6.2-liter LT4 V-8 engine’s power from 650 hp and 650 lb-ft to 720 hp and 730 lb-ft.
If you had a Z06 and wanted 700-plus hp, which kit would you choose?