General Motors Design in Warren, Mich., will manage the painstaking work to repair the eight prize vehicles, the automaker said Thursday.
The cars were consumed when the earth opened up early Wednesday beneath a display area when the museum in Bowling Green, Ky., was closed. No injuries were reported. The museum was open Thursday except for the area where the sinkhole occurred.
Mark Reuss, GM's head of global product development, said the damaged vehicles rank as "some of the most significant in automotive history."
"There can only be one 1-millionth Corvette ever built," he said, referring to one of the damaged cars. "We want to ensure as many of the damaged cars are restored as possible so fans from around the world can enjoy them."
Just how the cars will be pulled out of the ground remains to be seen, said museum executive director Wendell Strode. The local fire department estimated the hole is about 40 feet across and 25 to 30 feet deep. The hole opened beneath part of the museum's domed section.
"We feel pretty confident that most of the cars can be extracted," Strode said Thursday. "And we hope and believe that with just a little bit of luck, that all eight cars can be extracted and be part of the restoration."
Chevrolet spokesman Monte Doran said some of the cars look to be in good shape, while others are buried in rubble.
"It will likely be several weeks until we can get the cars out and assessed," he said.
The GM Design team has helped restore other historic cars, but the Corvette project looks to be its biggest, he said.
"These Corvettes are part of our history, and they want them restored properly," Strode said. "We're thrilled they're doing this."
The cars looked like toys as they plunged into the hole, piled in a heap amid dirt and concrete fragments. The museum owns six of the cars while two a 1993 ZR-1 Spyder and a 2009 ZR1 Blue Devil are on loan from General Motors.
The other cars damaged were a 1962 black Corvette, a 1984 PPG Pace Car, a 1992 White 1 Millionth Corvette, a 1993 Ruby Red 40th Anniversary Corvette, a 2001 Mallett Hammer Z06 Corvette and a 2009 white 1.5 Millionth Corvette.
Pictures of the sinkhole showed a collapsed section of floor with multiple cars visible inside the hole. A few feet away, other Corvettes sat undamaged. They were later removed from the damaged area.
Sinkholes are common in the Bowling Green area, which sits in the midst of the state's largest karst region, where many of Kentucky's largest and deepest caves run underground.
The damaged cars were insured, but the coverage likely won't fully cover all the restoration costs, Strode said.
Once again, GM is stepping forward to help.
"We don't know yet what will be covered by insurance, and what will be covered by GM," Doran said. "However, we expect that there will be no cost to the museum to restore the cars."
The first task is to stabilize what's inside the sinkhole and near it, Strode said. That could take about 10 days, he said. Then will come the extraction by crane, but the timetable hasn't been determined, he said.
The museum also has insurance coverage for damage to the structure.
A construction management firm has been hired to oversee the project, and engineering teams have also been brought in.
The goal is to have the structural repairs done in time for the museum's Corvette Caravan in late August, a celebration marking the museum's 20th anniversary. Thousands of Corvette enthusiasts are expected to converge on the museum in their models of the classic American sports car.
"Folks, if they hadn't been familiar with it, they may never be aware anything had gone wrong," Strode said. "It's going to look that good."