I run one ( E-32) in an SV-11 and it runs cooler than the E-25 I had in it before. There are many variables , of course, from cooling entry to exits, aircraft weight, ESC settings, cowl biforcating ( thanks Bob H. )and spinner design.

Since it is a "big block" as compared to the E-25, it requires some space on all sides to allow air to pass.

The last temp I took was 117 degrees( F)  when the outside temp was low 80s.

I can tell you that 5S is correct- several, including Dean Pappas ,steered me properly in that direction. I use a Phoenix 45 and an FM-9 Hubin timer.My ESC settings are on the mild side( e.g.- PMR at because this motor puts out loads of power and , IMO, doesn't require being set to the max .
I'm swinging an  APC 13x 5.5 EP @ 9,400, 62.5 ft.  .018 eyelet to eyelet  and getting  a 5.3 lap.

If you haven't biforcated the cowl, suggest you look back a year or so  in M.A. and  read Bob Hunt's column/pictorial.
That, combined with one of the soon to be released Tru-Turn "Turbo Cooled" spinners( make sure it's cut for a Pusher Prop- cone and backplate) should  help.