In 1984, Newey moved to the March Indy car project, working as designer and race engineer for Bobby Rahal at Truesports. Newey formed a close friendship with Rahal, which would impact their careers some fifteen years later. Newey's March 85C design won the 1985 CART championship in the hands of Al Unser, and the 1985 Indianapolis 500 with Danny Sullivan. In 1986 Newey moved to Kraco to engineer Michael Andretti's car, while his March 86C design won the CART title and 1986 Indianapolis 500 with Bobby Rahal.