Rick DeLone's University shot put record was the highlight yesterday as the varsity track team downed Dartmouth, 57 to 52, in the afternoon, and took an 18-point lead in the Greater Boston championships at night.

DeLone tossed the 16-lb. ball 56 ft., 101/2 in., breaking the existing mark by two inches. Last night at M.I.T., DeLone set a Greater Boston Indoor meet record with a heave of 55 ft., 9 1/2 in.

Against Dartmouth, the varsity started badly, as Indians Henry Jenckes and Bob Cahners took second and third behind Ted Balley's meet record of 58 ft., 11 in. in the weight. Big Green coach Ellie Noyes then bombed the mile with his two aces, Tom Laris and Nick Jennison.

Laris led most of the way but with 500 yards left, Mark Mullin took over. He held off a rally by his long-time rival to win in a fast 4:17.7. But Jennison finished third, ahead of Eddie Meehan, and Dartmouth was still in contention.

In the 600, Tom Holzel of Dartmouth overwhelmed the varsity's Don Kirkland in the first heat and the Indians thought they were on the way. But Kirkland, suffering from a cold, had slowed the pace in the first heat's early stages, and Lowell Davidson's 1:15.3 in the second race gave the varsity another triumph.

The Dartmouth threat ended with the 600, and the varsity just clowned around the rest of the afternoon. The freshmen also topped the Big Green, 63 to 46.

Last night, Bailey won a thrilling battle with B.C.'s George Desnoyers, throwing the weight 60 ft., 21/2 in. for a GBI meet record on his last attempt after Desnoyers had just done 58 ft., 5 in. Sid Marland won the broad jump at 21 ft., 8 in. on his last try, and Don Forte and Jay Mahaney were in a four-way tie for first in the pole vault at 12 ft., a meet mark.