The two sides meet in a must-win game here after India's match against Australia was washed out in Sydney on Monday. The winners will move to the final to take on the hosts on Sunday, also in Perth.
The pitch at WACA is known to be quick, quite different from any other grounds in Australia. England's pacers enjoyed the bounce at the Gabba in Brisbane against the Indian batsmen and will be looking to do the same in Perth as well.
"So an individual performance like Steven Finn put in was brilliant. Since then Ian Bell has put in a fantastic performance (against Australia) so things are starting to come together and I think a win tomorrow would give us huge confidence and build momentum for us ahead of the World Cup," he added.
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"I think it is important to win this game given the lack of success we've had before this tour.
"We've built a confidence in our preparation, in the game in Brisbane and in performances leading into the start of this series. So as momentum and confidence goes I think it's quite a big game.
"It's vitally important we adapt to conditions tomorrow. It's going to be a little bit different to everywhere we do play on this tour. But the guys are really looking forward to it. It's a place where you come and play and really look forward to it - one of those iconic grounds where you want to do well," Morgan said.