Photo: # 3, 73, 50 - 2014, C7.R 003, USCR GTLM, LMGTE- Pro, WEC LMGTE-Am, Corvette Racing, Pratt & Miller, Magnussen, Garcia, Briscoe, Larbre, Green Energy
Photo: # 4, 74, 3, 63 - 2014, C7.R 002, USCR GTLM, LMGTE-Pro, (# 3 after CoTA), Corvette Racing, Pratt & Miller, Gavin, Milner, Pagenaud, Magnussen, Garcia
Photo: # 90 - 2015, USCR C7 DP Dallara, Spirit of Daytona, Visit Florida, Westbrook, Valiente, Rockenfeller
C7 GT3 R
The C7 Corvette GT3 R was unveiled in October 2015 at Hockenheim before the final race of the ADAC GT season. The body by Canadian Paul Deutschman, longtime designer for Callaway, is inspired by the GTM cars. The aggressive aerodynamic kit consists of heavily modified bumpers, fenders, side sills, and a massive rear wing, significantly bigger than the one on the Pratt & Miller IMSA C7.R. The carbon-fiber diffuser and the vented rear fenders round out the aero package.
Callaway Competition replaced the C6 ZO6 GT3 that served the team for a decade with the C7 GT3 R. In 2016, its first season, the # 77 Valvoline/Roller driven by Daniel Keilwitz, a former champion, and Jules Gounon, a talented young Frenchman, won three of 6 races and was contending for the championship heading into the finale at Hockenheim. A tangle with an Audi put Gounon into the wall ending their hopes.
In 1994 principals Ernst Woehr and Giovanni Ciccone, based in Leingarten GER joined with Reeves Callaway, a manufacturer approved by Chevrolet to form Callaway Competition. The closely contested ADAC GT Masters Series pits Calaway Corvettes against Audi, Porsche, Mercedes, BMW, Nissan, McLaren and other marques that are factory-backed.
The # 69 AutoArena C7 GT3 R is driven by Patrick Assenheimer and Dominik Schwager. The # 31 Whelen C7 GT3 R is driven by Americans Eric Curran and Boris Said, schedules permitting.
A fourth chassis is being built for the RWT headed by Gerd Beisel.
Built Oct 2015
# 31 Whelen, drivers Eric Curran, Boris Said, Loris Hazemans, Mauron, Hacklan
# 69 AutoArena, drivers Patrick Assenheimer, Dominik Schwager
# 77 Valvoline/Roller, drivers Daniel Keilwitz, Jules Gounon
Width 2042 mm
wheelbase 2713 mm
Length 4592 mm
Weight 1240 kg +/- “success ballast”
Chassis Standard Z06 hydro formed aluminum chassis, bolted and bonded steel roll cage to FIA safety standards.
Body Carbon fibre body panels, poly-carbonate front windscreen and rear window, composite front splitter and rear diffuser, adjustable composite rear wing.
Motor LS9 6.2 L Euro GT3 V8 engine built by APP, mapped for 98 octane unleaded fuel, dry sump system with 3 stage external scavenge pump, EFI engine management system, manuel throttle actuation, Motor Sport Engine wiring loom, exhaust manifolds with FIA mandatory silencer, power 550 - 600 hp depending on mandatory 53mm FIA Restrictor, max engine rpm 7200.
Transmission Xtrack 6 speed, paddle shift, Tilton Triple plate race clutch, with central clutch release, deleted torque tube, solid driveshaft coupled with clutch in front of the rear transmission, adjustable traction control.
Tyres ADAC-GT Spec Pirelli, front 30/68-18, rear 31/71-18
Wheels OZ Racing cast magnesium alloy, front 18”x 12”, rear 18”x 13”
Brakes Brembo, revised front axle geometry with a special sub frame, 6
piston front calipers, AP Racing 4-piston rear calipers, 378 mm vent front disc, 333 mm vent rear disc, AP Racing pedal box, manually adjustable front/rear brake bias, front and rear cooling ducts, 4 channel Race ABS System.
Suspension Rose jointed independent double wishbone front and rear suspension, front and rear machined aluminum uprights, central wheel locking system, Bilstein double adjustable dampers with bump and rebound adjustment, adjustable Front and rear anti-roll bar, optimized front rear kinematic, fabricated rear sub frame.
Fuel capacity ATL 105 litre FT 3 fuel cell with quick refueling valve on both sides.