Unlock Alan Kulwicki:
At the Main menu select Single race and choose the Bristol track. Then highlight 'Select car' and enter Z (x8), R, R.

Unlock Benny Parsons:
At the Main menu go to Single Race and the Richmond Track and highlight 'Select Car' and press C-Up, C-Right, C-Down, C-Left, Z, Z, Z, L, Z, Z.

Unlock Davey Allison:
At the Main menu go to Single Race and highlight the Talladega Track and 'Select Car' and press C-Up, C-Left, C-Down, C-Right, L, R, L, R, L, R.

Unlock Richard Petty
At the Main menu select Single Race and highlight the Martinsville Track 'Select car' and press C-Up, C-Up, C-Down, C-Down, C-Left, C-Right, C-Left, C-Right, L, R.

Unlock Bobby Allison:
At the Main menu select Single Race and highlight the Charlette Track and 'Select car' and press C-Up, C-Left, C-Down, C-Right, L, R, L, R, Z, Z.

Unlock Cale Yarborough
Finish in the top 5 in Championship season with at least 50 percent on the Darlington Track.

Unlock Dirt Track Mode:
Pause gameplay halfway through a race and hold R and press Z (X2) and then Up, Down, L (X5).