when is calling an all-in w/ 53o correct? (50+5)

[ir0nphist]

NL Texas Hold'em $50 Buy-in + $5 Entry Fee
Level:5 Blinds(75/150)

Seat 2 is the button
Total number of players : 5

<font color="red"> Seat 4: SB ( $500 )
Seat 5: BB (Hero) ( $1365 )</font>
Seat 2: Button ( $2390 )
Seat 6: MP ( $2915 )
Seat 8: UTG ( $2830 )
Trny:14376369 Level:5
Blinds(75/150)
** Dealing down cards **
Dealt to Hero [ 3[img]/images/graemlins/spade.gif[/img] 5[img]/images/graemlins/diamond.gif[/img] ]
3 folds, SB is all-In.

Hero calls [350].

So my thinking here was that I was getting almost 2:1 on the call (it was actually 1.86:1). Even against AKo, 53o is only a 1.76:1 dog. When a call is close like this and I have an opportunity to knock a player out I like to take it. Plus, when I have opportunities like this I like to call as it sometimes will discourage others at the table from stealing against me in future hands.

If you disagree with this call, then how small does SB's push have to be to call here?