Peterborough recovered from the shock of conceding an early goal to thump struggling Torquay. Lee Mansell's fierce volley gave the Gulls a sixth-minute lead but Shane Huke headed Posh level and a Lee Thorpe own goal gifted the hosts a second.
Ben Futcher stretched the lead with a classy header before the break.
Aaron McLean grabbed his fourth in four games to make it 4-1 and Richard Butcher hit a fifth before Jordan Robertson pulled one back late on.
606 DEBATE: Give your thoughts on the match
Peterborough: Tyler, Holden, Branston, Futcher, Arber (Smith 76), Newton, Butcher, Huke (Day 64), Stirling, Mclean (Benjamin 63), Crow.
Subs Not Used: Gain, Opara.
Goals: Huke 12, Thorpe 26 og, Futcher 36, Mclean 59, Butcher 60.
Torquay: Abbey, Andrews, Reed, Woods, Thorpe, Murray (Hockley 87), Critchell (Leary 76), Mansell, Hill, McPhee (Robertson 62), Ward.
Subs Not Used: Villis, Motteram.
Goals: Mansell 7, Robertson 90.
Att: 4,452
Ref: G Hegley (Hertfordshire).