The Hammers saw deadline day pass with 11 new players having been drafted into the Upton Park ranks.
Among the more notable arrivals were Andy Carroll on a season-long loan from Liverpool, Yossi Benayoun returning to the club on loan from Chelsea, Matt Jarvis making a big-money move from Wolves and Mohamed Diame opting to link up with the Hammers on a free transfer.
Allardyce is delighted with the calibre of player he has been able to acquire, with West Ham having strengthened in all areas of the field.
A 3-0 victory over Fulham on Saturday, in which Carroll and Diame starred, suggests the Hammers have every right to believe that their fresh faces can help them push for a top-half finish in the Premier League this season.
"I think you could say this was a dream transfer window for me," said Allardyce.
"It's a gruelling task finding the right players.
"You get to the summer break when everyone wants far too much for the players you want. You get to pre-season and they are still asking far more than what you can afford. Then you get to the last-minute, panic stations sets in and it gets a bit cheaper.
"But Karren Brady, David Sullivan, David Gold and myself have really gone to town and pressed the button on a lot of things we wanted to do."