LaJoie made his NASCAR Winston Cup debut in 1985 at Atlanta Motor Speedway.
Driving the No.
07 Snellman Construction-sponsored Chevrolet owned by Bob Johnson, he started 16th and finished 14th.
He ran his next race the following season at Pocono Raceway,  where he finished 29th after suffering engine failure.
He also made his Busch Series debut that season, running four races in his own No.
03 Pontiac, posting a tenth-place finish at Charlotte Motor Speedway.
He ran another race in 1987 at Dover International Speedway and finished 10th.
After a third-place finish the following season, he joined Frank Cicci Racing mid-way through 1989 and had a career-best second-place run at Hickory Motor Speedway.
He ended the season 26th in points.

He did not return to Cicci in 1990, and ran a handful of Busch Races in his own No.
71, his best finish was 23rd at Richmond.
He did not run another NASCAR-sanctioned race until 1993, when he got selected to run the No.
20 Fina car owned by Dick Moroso at Talladega.
This would turn out to be a shrewd career move for LaJoie as he ran up front with the leaders all afternoon and finished a surprising second.
This got LaJoie five more races for Moroso and one for BACE Motorsports in the Busch Series.
His best finish was second, twice.
In 1994, he was a thought by some to be a dark horse for the championship.
He drove for Moroso full-time in the No.
20 Fina Lube-sponsored Chevy that season posting seven Top 10’s.
LaJoie led the point standings early in the season before a string of poor results, also a lack of performance dropped him to 16th in the final point standings.
He also ran three Cup races, finishing in the Top 20 in all three of them that season.
LaJoie made his NASCAR Winston Cup debut in 1985 at Atlanta Motor Speedway. Driving the No. 07 Snellman Construction-sponsored Chevrolet owned by Bob Johnson, he started 16th and finished 14th. He ran his next race the following season at Pocono Raceway,  where he finished 29th after suffering engine failure. He also made his Busch Series debut that season, running four races in his own No. 03 Pontiac, posting a tenth-place finish at Charlotte Motor Speedway. He ran another race in 1987 at Dover International Speedway and finished 10th. After a third-place finish the following season, he joined Frank Cicci Racing mid-way through 1989 and had a career-best second-place run at Hickory Motor Speedway. He ended the season 26th in points.
He did not return to Cicci in 1990, and ran a handful of Busch Races in his own No. 71, his best finish was 23rd at Richmond. He did not run another NASCAR-sanctioned race until 1993, when he got selected to run the No. 20 Fina car owned by Dick Moroso at Talladega. This would turn out to be a shrewd career move for LaJoie as he ran up front with the leaders all afternoon and finished a surprising second. This got LaJoie five more races for Moroso and one for BACE Motorsports in the Busch Series. His best finish was second, twice. In 1994, he was a thought by some to be a dark horse for the championship. He drove for Moroso full-time in the No. 20 Fina Lube-sponsored Chevy that season posting seven Top 10’s. LaJoie led the point standings early in the season before a string of poor results, also a lack of performance dropped him to 16th in the final point standings. He also ran three Cup races, finishing in the Top 20 in all three of them that season.
Randy LaJoie