• Champion Spark Plugs joins the NASCAR bandwagon, posting $5,000 in post-season awards to the point leaders in five NASCAR racing divisions.

• Wynn's and Miracle Power companies follow suit with contingency awards for NASCAR's premier series.

• The first known use of a two-way radio in NASCAR competition occurs on Feb. 9 in the 125-mile Modified-Sportsman race on the Daytona beach-road course. Driver Al Stevens communicates with team owner Cotton Bennett during the race on the 4.1-mile course. Driving a Sportsman car, Stevens finishes third in class and 27th overall in the 97-car field.

• NASCAR unveils the Speedway Division for 1952, which features Indianapolis-type race cars powered by stock engines.

• Buck Baker, driving a Cadillac-powered open-wheel vehicle, wins the inaugural Speedway Division race at Darlington International Raceway on May 10.

• Tim Flock wins eight races en route to the 1952 Grand National championship.