Maybe.
It depends on whether the clustered index is useful for the queries that are causing the locking. All tables should have a clustered index and 0 or more nonclustered indexes, depending on the queries run on that table.
Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability
We walk in the dark places no others will enter
We stand on the bridge and no one may pass