Race as Bobby Allson, select Charlotte track: highlight, select car and press C-UP, C-L, C-D, C-R, L, R, L, R, Z, Z.
Turn off damage in the options screen. While racing, turn around and slam into an oncoming car. You'll do aerial stuff like front flips and barrel rolls. It won't help you win the race, but it's fun.
Cale Yarborough the Easy Way
At Darlington, when you're selecting your car hit LEFT, LEFT, LEFT, C-LEFT, C-LEFT, RIGHT, RIGHT, Z.
Play as Bobby Allison
If you race an championship series and race Charlotte at 50% or greater and place in the top 5 you will unlock nascar legend Bobby Allison and then be able to race with him.
Play as Alan Kulwicki
Go through the championship season and race 50% of Bristol Day and get in the top five and you will get to run as Alan Kulwicki, in any game mode.
Play as Benny Parsons
Begin a championship season, run 50% of the laps at Richmond, finish in the top 5 and you will earn Benny Parson.
Play as Cale Yarborough
Race a championchip season with at least a 50% race length and finish in the top 5 at Darlington.
Play as Davey Allison
Go through the Championship Season and race 50% of Talledega and get in the top 5 you will get to run as Davey Allison.
Play as Richard Petty
Race a championship season with at least a 50% race length and finish in the top 5 at Martinsville.
You all know how loud your engine can be when racing. Here's something I found to quiet the engine. At any time during a race, go to the instant replay screen and choose the camera angle that is in the car or in front of the car looking forward. Now, go back to racing and you'll have a quieter engine.
NOTE: If you change your view while racing your engine will revert to being loud.
Select single race mode, then hold Left + R and press B, A, B, A, B, A, B, A at the track selection screen. Alternatively, hold Left + R and press B + A, B + A, B + A, B + A at the track selection screen.
Pause the game and select the "Instant Replay" option. Then, press Up/Left or Up/Right on the Analog-stick to view the instant replay in slow motion.