Tomboy (1985)

Scrappy, willful, and fiercely self-reliant spitfire hoyden automobile mechanic Tomasina 'Tommy' Boyd develops a huge crush on cocky race car driving dreamboat hunk Randy Starr after meeting Randy at a party held at a jerky rich guy's house. However, male chauvinist Randy won't take Tommy seriously because she's a gal, so Tommy dares Randy to a high stakes souped-up automobile race in order to win over his respect.

Imdb