The title sequence is not particularly long. It runs about two and a half minutes and there is no pre-credit sequence. the titles start as soon as the film begins. Here's a review from IMBd which I'm sure Ed will appreciate!

LAST DAYS OF SODOM AND GOMORRAH stands as a towering achievement by Director Robert Aldrich with an unforgettable international cast. Stewart Granger, truly an accomplished personality matches wits with the sensual Queen of Sodom portrayed by the ever-beautiful Anouk Aimee. The musical score by Miklos Rozsa is one of his best ever and the Twin Cities of Sin and Evil are appropriately peopled with all forms of degenerate behavior. A lustful, delicious film. The battle between the Sodomities and Helamites is unquestionably the finest Biblical conflict ever filmed. Giacomo Rossi-Stuart, the Kessler girls, Pier Angeli and Rosana Podesta are sultry and overwhelming presences throughout this ageless tale. Costumes, battle gear, erotica are simply first-rate. This should be textbook must-see viewing for any filmmaker who wishes to make an epic spectacle. Five stars with a knockout finale!