Stoch took victory at the last round in Kuopio on Tuesday where a fifth-place finish for Gregor Schlierenzauer saw claim his second overall World Cup title.
With the World Cup wrapped up Schlierenzauer can afford to relax for the remainder of the season however Stoch isn't prepared to as proved in Norway.
He placed third after the first round as Robert Kranjec led ahead of Richard Freitag however the Polish ski jumper came back strongly in the second round with a leap of 140m.
That was just a metre shy of the hill record set by Daiki Ito and enough to give him a winning total of 280.4 with Freitag staying second with 278.7 while Kranjec dropped to fifth with 269.8 overall.
Ito went from joint seventh to third and Stoch, who won the large hill title at the World Championships in Val di Fiemme last month, revelled in the victory in Trondheim.
"It was a very good competition for me, of course I am happy," said Stoch, who will now move onto Oslo for the next World Cup before the last two in Planica, Slovenia.
"The first jump was pretty good but I was a little bit late on the take off and that is why I didn't fly so far but the second was really, really good and I enjoyed it.
"I am looking forward to the next round. What can I say? I will do my best and see what that will bring in the future."
Kranjec jumped 133.5m for 136.2 points and the lead during round one with Freitag just 0.1 point behind after leaping within 1.5m of the Slovenian.
Then came Stoch just another 0.5 points behind after an effort of 131m with Peter Prevc fourth, Michael Neumayer fifth, Anders Jacobsen sixth and Ito level seventh with Jurij Tepes.
Stoch's leap of 140m proved unbeatable during round two while a jump of 136m from Freitag kept him in second place and 135.5m from Ito promoted him to third.
Neumayer also moved up, this time to fourth with 136m, with Kranjec and Prevc down in fifth and sixth respectively, Tepes remaining seventh and Jacobsen placing eighth.
World Cup champion Schlierenzauer ended 16th in the first event since taking the title with Stoch up to third overall and Anders Bardal, who was 13th, still second.