Chevy happy with R07 engine

Chevrolet engineers are happy with the way the new R07 engines looked after racing last weekend at Texas Motor Speedway.

Five cars had the new engine, with Denny Hamlin's ninth-place finish the best among them. One Hendrick Motorsports engine and four Joe Gibbs Racing engines were in cars for the event. None of them had a failure nor the fuel pump issues that had stymied some teams working with the new pump configuration.

"Everything looked really good," said GM Racing's Jim Covey, who oversees the Chevrolet NASCAR engine development and has been in contact with the teams this week after they have examined the engines. "We're very happy with it. We're very comfortable. … We got through the first race, and I don't think they have any doubts."

There is no specific date for all of the teams to use the new engine, which is expected to have more durability and slightly more horsepower.

"They're very competitive with the [old] SB2 today," Covey said. "They're able to take it at their own pace." Scenedaily.com