Terry Bradshaw completed 14 of 21 passes for 309 yards and set two passing records as the Steelers became the first team to win four Super Bowls.
Despite three interceptions by the Rams, Bradshaw kept his poise and brought the Steelers from behind twice in the second half. Trailing 13-10 at halftime, Pittsburgh went ahead 17-13 when Bradshaw hit Lynn Swann with a 47-yard touchdown pass after 2:48 of the third quarter.
On the Rams' next possession Vince Ferragamo, who completed 15 of 25 passes for 212 yards, responded with a 50-yard pass to Billy Waddy that moved Los Angeles from its 26 to the Steelers' 24. On the following play, Lawrence McCutcheon connected with Ron Smith on a halfback option pass that gave the Rams a 19-17 lead.
On Pittsburgh's initial possession of the final period, Bradshaw lofted a 73-yard scoring pass to John Stallworth to put the Steelers in front to stay 24-19.
Franco Harris scored on a 1-yard run later in the quarter to seal the verdict. A 45-yard pass from Bradshaw to Stallworth was the key play in the drive to Harris's score.
Bradshaw, the game's most valuable player for the second straight year, set career Super Bowl records for most touchdown passes (9) and most passing yards (932).
Larry Anderson gave the Steelers excellent field position throughout the game with five kickoff returns for a record 162 yards.