Just five of the Reds' first 13 fixtures of the season have been hosted in L4, with work on the Main Stand expansion delaying their maiden appearance of the campaign on home turf.
But they have yet to taste defeat in front of the Kop, having claimed four wins and a draw since the famous stadium reopened in early September.
McAllister believes the extra 8,500 fans who are now able to attend Anfield fixtures are making all the difference, helping Jürgen Klopp's team to find their highest intensity from the first whistle.
"I think the new stand is definitely helping, the extra bodies in there," he told Liverpoolfc.