More details of nominees on the SFWA Nebula Awards 1974 Page.
Roger Zelazny The Engine at Heartspring’s Center
Gordon Eklund and Gregory Benford If the Stars Are Gods
Winner Best Novelette
Tom Reamy Twilla
Robert Scholes As the Walls Crumble
Philip Jose Farmer After King Kong Fell
Ursula K Le Guin The Day Before the Revolution
Winner Best Short Story
C L Grant The Rest is Silence
Robert Silverberg Born with the Dead
Winner Best Novella