The Chevrolets have exploded out of the box in California.
Chevy drivers had the top eight spots in the first practice at Auto Club Speedway on Friday afternoon, a 90-minute session led by Mark Martin (182.927 mph).
Ryan Newman (182.449) was second-fastest, followed by Juan Pablo Montoya, Jeff Burton and Clint Bowyer.
Daytona 500 winner Jamie McMurray was sixth-fastest, followed by Kevin Harvick and Jimmie Johnson.
The top non-Chevys was Kurt Busch’s Dodge and Joey Logano’s Toyota in ninth and 10th.
Other drivers of note included Jeff Gordon (13th), Kyle Busch (17th), Tony Stewart (22nd) and Dale Earnhardt Jr. (25th).
Sprint Cup qualfying takes place at 6:40 p.m. EST (3:40 local) this afternoon.