UPDATE 2-Soccer-Late Drogba strike puts Chelsea in FA Cup final

* Drogba goal gives Chelsea 2-1 win over Arsenal

* First FA Cup success over their rivals since 1947

* Chelsea face Manchester United or Everton in final

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By Martyn Herman

LONDON, April 18 (Reuters) - Chelsea's Didier Drogba was a thorn in Arsenal's side again on Saturday when he struck late to clinch a 2-1 victory in the FA Cup semi-final at Wembley.

The Ivory Coast striker pounced on Frank Lampard's lofted pass with six minutes remaining to give Chelsea their first FA Cup success over Arsenal since 1947.

They will face the winners of Sunday's semi-final between Manchester United and Everton, which is also at Wembley.

Drogba has now scored eight goals against Arsenal since joining Chelsea from Olympique Marseille, including a late winner in the League Cup final in 2007.