The 8 second delay on 98.7 FM NYC is due to the built-in HD delay, which is in addition to whatever profanity delay ESPN Radio New York runs on WEPN-AM and FM. Yes, even though 98.7 FM is now in monaural, it's still in HD, much like the other station Emmis owns a small stake in here in NYC: WEMP 101.9.
If I had to guess, the profanity delay is in the 13-15 second range, judging by the top-of-hour start of the national SportsCenter updates which start at around 21-23 seconds past the actual top-of-hour. Not scientific by any means, just conjecture on my part.
I've noticed when listening to the online feed of WUCS (granted, not the same as listening on-air) that they're much closer to being "live" than most other stations. Of course that may also be attributed to the iheartradio feed being relatively "quick/buffer free", which I've noticed with other Clear Channel stations that I've been able to compare on-air vs. online -or- that Clear Channel has a hefty built-in on-air delay which makes the iheartradio online feed appear closer to real-time.