Good bluff?

[Cincy_Kid_ES]

Full Tilt Poker Game #3805553877: Table Rams (6 max) - $0.10/$0.25 - Pot Limit Omaha Hi - 18:04:34 ET - 2007/10/09
Seat 1: Gsus4 ($31.95)
Seat 2: CrazyAzzArty ($24.75)
Seat 3: The_Dealer_No1 ($14.95)
Seat 4: _ultravixen_ ($14.15)
Seat 5: Canary3 ($50.80)
Seat 6: Cincy_Kid_ES ($37.15)
Canary3 posts the small blind of $0.10
Cincy_Kid_ES posts the big blind of $0.25
The button is in seat #4
*** HOLE CARDS ***
Dealt to Cincy_Kid_ES [3s Jh 7c Kd]
Gsus4 calls $0.25
CrazyAzzArty calls $0.25
The_Dealer_No1 raises to $1.35
_ultravixen_ folds
Canary3 folds
Cincy_Kid_ES calls $1.10
Gsus4 raises to $5.75
CrazyAzzArty folds
The_Dealer_No1 calls $4.40
Cincy_Kid_ES calls $4.40
*** FLOP *** [8s 4c Tc]
Cincy_Kid_ES checks
Gsus4 checks
The_Dealer_No1 has 15 seconds left to act
The_Dealer_No1 checks
*** TURN *** [8s 4c Tc] [4s]
Cincy_Kid_ES bets $17.60
Gsus4 folds
The_Dealer_No1 folds
Uncalled bet of $17.60 returned to Cincy_Kid_ES
Cincy_Kid_ES shows [3s Jh 7c Kd] a pair of Fours
Cincy_Kid_ES wins the pot ($16.75)
*** SUMMARY ***
Total pot $17.60 | Rake $0.85
Board: [8s 4c Tc 4s]
Seat 1: Gsus4 folded on the Turn
Seat 2: CrazyAzzArty folded before the Flop
Seat 3: The_Dealer_No1 folded on the Turn
Seat 4: _ultravixen_ (button) didn't bet (folded)
Seat 5: Canary3 (small blind) folded before the Flop
Seat 6: Cincy_Kid_ES (big blind) collected ($16.75)
---------------------------------------------------------
I put the raiser of to 5.75 on over pairs, and the other guy that called on air.