Dartmouth's powerful football machine combined faultless execution with fundamental defense Saturday to drub a daunted Harvard team, 37-14, at Harvard Stadium.

It was coach Bob Blackman's 100th career victory, and it was a fittingly convincing one. The Dartmouth defense limited a sputtering Crimson offense to just one first down until the fourth quarter while the Big Green offense capitalized on Harvard miscues for a 31-0 lead.

Harvard coach John Yovicsin said after the game that the Crimson's weaknesses "are becoming glaring weaknesses." Specifically, he was referring to a pass defense which was easily exploited by Dartmouth quarterback Jim Chasey and an offense which utterly lacked consistency or variation.

After a scoreless first quarter in which the Crimson defense staved off three Dartmouth drives. Chasey and versatile halfback John Short collaborated for two quick scores.

Down and Out

Harvard managed only four yards total offense in the opening period, so quarterback Rod Foster took to the air. On second and ten from the Harvard 38, Foster sent split end Bruce Freeman down, out and down.

Freeman broke into the clear by eight yards at the Dartmouth 40, but Foster overthrew him. It was the closest the Crimson came to a touchdown until the fourth quarter.

Still upset by the bad passes to Freeman, Foster-who had twice punted Harvard out of trouble in the first quarter with 53- and 35-yard efforts-kicked short and out of bounds at midfield.

Two plays later. Short stunned the Crimson defense when he pulled up on a sweep and threw to Bob Brown all alone at the 18. Brown stolled in for the score and Wayne Pirmann added the extra point.

Rich Gatto brought the ensuing kickoff out to the 12, Foster found himself in the hole for the third time in four possessions. A screen pass to Tom Miller put the Crimson at the 33, but Steve Harrison came up short on third and one.

The defense stiffened after another short punt by Foster, then Yovicsin reverted to his 'new quarterback' strategy which proved disastrous against Columbia two weeks earlier.

Try A Bomb

Eric Crone entered the game and immediately tried a bomb to flanker Mike Murr which fell incomplete at the Dartmouth 40.

On third and seven. a pass intended for Miller was intercepted by Indian middle linebacker Wayne Young, who returned it to the Harvard 23.

Chasey hit Short on a pass to the 13 on first down, then Short powered over from the one three plays later to make it 14-0.

The Dartmouth halfback ended the day with 25 carries for 106 yards and a touchdown, six pass receptions for 52 yards and a touchdown, and one pass competition for 49 yards and another score. He even punted once for 35 yards when punter Jay Bennett injured his ankle.

Chasey was no less effective, as he ran the option to perfection, called a flawless game and threw more passes than he has in three years (26), completing 15 for 145 yards and a touchdown.