It set them up perfectly for their first home match against Leicester City in what is the club's last ever season at its Boleyn Ground home of 112 years.
The efforts to ensure Upton Park was a fortress for the momentous season fell at the first hurdle, though, with the Foxes inflicting a 2-1 defeat on Bilic's side.
Newly-promoted Bournemouth are next up this weekend and Bilic looks set to make as many as three changes to his side.
First change: Argentine tango
Striker Mauro Zarate has confirmed he will miss the next two matches through injury after posting the disappointing news on Twitter.
Very sad by the injury and not to be available to play the next two matches !!! I now focus on a fast recovery.— Mauro Zarate (@mau_zeta) August 19, 2015
With Ecuador striker Enner Valencia out for three months after getting injured during the club's ill-fated Europa League qualifying campaign and fellow forward Andy Carroll not due to return from injury until at least next month, the Hammers are desperately short of options up front.
Things have been so bad Bilic has had to use outcast Modibo Maiga from the bench in the first two matches much to the frustration of supporters.
It is highly unlikely he will be used from the start so Bilic may elect to go like for like and replace Zarate with fellow Argentine Manuel Lanzini.
Second change: Find us 'keepers
Another enforced change will be at the other end of the pitch as goalkeeper Adrian is suspended for three matches after his sending off against the Foxes last time out.
The club appealed the ban but that was rejected meaning back-up 'keeper Darren Randolph will step in.
That news has filled Hammers fans with dread given Randolph's decidedly shaky start to life at Upton Park in his appearances so far.
There is also the worrying statistic that Randolph conceded a staggering 16 goals in three games against Bournemouth last season - including eight in one match - hanging over the number two.
He may well find his path to the first team blocked, though, if former hero Rob Green is re-signed from QPR in time, as reported by the likes of Sky Sports.
Third change: Oxford educated by Obiang?
The last change will be of choice and could see the club's youngest ever player Reece Oxford drop out for impressive Spaniard Pedro Obiang.
The 16-year-old was a revelation on his debut at Arsenal winning plaudits from across the football world for his performance in central midfield against the likes of World Cup winner Mesut Ozil.
But he was caught out for both Leicester City goals in the Hammers' 2-1 defeat and was substituted at half-time for the man that will more than likely replace him from the start this weekend, Obiang.
The former Sampdoria midfielder was a big plus point for West Ham from the defeat as his sublime passing range and assertiveness on the ball helped the Hammers put on a much improved second half display and almost get back in the game.